JP2910820B2 - Hybrid fire-resistant coating structure and fire-resistant coating method - Google Patents
Hybrid fire-resistant coating structure and fire-resistant coating methodInfo
- Publication number
- JP2910820B2 JP2910820B2 JP6047332A JP4733294A JP2910820B2 JP 2910820 B2 JP2910820 B2 JP 2910820B2 JP 6047332 A JP6047332 A JP 6047332A JP 4733294 A JP4733294 A JP 4733294A JP 2910820 B2 JP2910820 B2 JP 2910820B2
- Authority
- JP
- Japan
- Prior art keywords
- fire
- layer
- foamable
- coating
- resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 229920006397 acrylic thermoplastic Polymers 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229910052661 anorthite Inorganic materials 0.000 description 1
- 150000001463 antimony compounds Chemical class 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- STIAPHVBRDNOAJ-UHFFFAOYSA-N carbamimidoylazanium;carbonate Chemical compound NC(N)=N.NC(N)=N.OC(O)=O STIAPHVBRDNOAJ-UHFFFAOYSA-N 0.000 description 1
- CEDDGDWODCGBFQ-UHFFFAOYSA-N carbamimidoylazanium;hydron;phosphate Chemical compound NC(N)=N.OP(O)(O)=O CEDDGDWODCGBFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GWWPLLOVYSCJIO-UHFFFAOYSA-N dialuminum;calcium;disilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] GWWPLLOVYSCJIO-UHFFFAOYSA-N 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical compound O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- YLGXILFCIXHCMC-JHGZEJCSSA-N methyl cellulose Chemical compound COC1C(OC)C(OC)C(COC)O[C@H]1O[C@H]1C(OC)C(OC)C(OC)OC1COC YLGXILFCIXHCMC-JHGZEJCSSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 125000000018 nitroso group Chemical group N(=O)* 0.000 description 1
- 150000002896 organic halogen compounds Chemical class 0.000 description 1
- 150000002903 organophosphorus compounds Chemical class 0.000 description 1
- AFEQENGXSMURHA-UHFFFAOYSA-N oxiran-2-ylmethanamine Chemical compound NCC1CO1 AFEQENGXSMURHA-UHFFFAOYSA-N 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- DLYUQMMRRRQYAE-UHFFFAOYSA-N phosphorus pentoxide Inorganic materials O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- OQZCJRJRGMMSGK-UHFFFAOYSA-M potassium metaphosphate Chemical compound [K+].[O-]P(=O)=O OQZCJRJRGMMSGK-UHFFFAOYSA-M 0.000 description 1
- 235000019828 potassium polyphosphate Nutrition 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- DJXRIQMCROIRCZ-XOEOCAAJSA-N vibegron Chemical compound C1([C@H]([C@@H]2N[C@H](CC=3C=CC(NC(=O)[C@H]4N5C(=O)C=CN=C5CC4)=CC=3)CC2)O)=CC=CC=C1 DJXRIQMCROIRCZ-XOEOCAAJSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Building Environments (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、耐火性能を著しく向上
できるハイブリッド耐火被覆構造体及びその耐火被覆工
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid fire-resistant coating structure capable of remarkably improving fire resistance performance and a fire-resistant coating method.
【0002】[0002]
【従来の技術】従来より、鉄骨構造物などの耐火構造と
しては、鉄骨などの表面を、例えば軽量モルタルなどの
非発泡性耐火被覆材で覆ったものが知られている。ま
た、それとは別に、鉄骨などの表面を、火災の際に発泡
して断熱層を形成する発泡性耐火塗料で覆ったものが知
られている。2. Description of the Related Art Hitherto, as a refractory structure such as a steel structure, a structure in which a surface of a steel frame or the like is covered with a non-foamable refractory coating material such as a lightweight mortar is known. Separately, there is known a structure in which a surface of a steel frame or the like is covered with a foaming refractory paint that foams in a fire to form a heat insulating layer.
【0003】そして、この様な鉄骨構造物などの建築物
の耐火性能を一定に水準に保つために、建築基準法によ
って一定の基準が定められている。つまり、建築基準法
では、建築物の火災時の倒壊を防ぐため、規模や階数や
用途や地域性により、建築物の柱、梁、壁、床、屋根の
各構造体に対して、必要な耐火性能が決められている。[0003] In order to maintain the fire resistance of buildings such as steel structures at a certain level, certain standards are set by the Building Standards Law. In other words, in accordance with the Building Standards Law, to prevent a building from collapsing in the event of a fire, the necessary structure for pillars, beams, walls, floors, and roofs according to the scale, number of floors, use, and regional characteristics Fire resistance is determined.
【0004】具体的には、従来の耐火構造の指定とし
て、下記〜の規定がある。 一般指定;鉄筋コンクリート構造、鉄骨鉄筋コンクリ
ート構造、鉄網モルタル被覆鉄骨構造、鉄網パーライト
モルタル被覆鉄骨構造など建設省告示第1675号の第
一〜第五に記載している耐火構造。[0004] Specifically, there are the following provisions for designating a conventional refractory structure. General designation; refractory structures described in Ministry of Construction Notification No. 1675 Nos. 1 to 5 such as reinforced concrete structures, steel reinforced concrete structures, steel mesh mortar-coated steel frame structures, and steel mesh pearlite mortar-coated steel frame structures.
【0005】通則指定;吹き付けロックウール被覆鉄
骨構造、繊維混入けい酸カルシウム被覆鉄骨構造、石綿
・ロックウール板被覆鉄骨構造、空洞プレストコンクリ
ートパネル床板構造、コンクリート・デッキプレート合
成スラブ構造、吹き付けロックウール被覆亜鉛鉄板屋根
構造などの通則指定の耐火構造。General specification: sprayed rock wool coated steel structure, fiber-mixed calcium silicate coated steel structure, asbestos / rock wool plate coated steel structure, hollow prestressed concrete panel floor plate structure, concrete deck plate composite slab structure, sprayed rock wool coating Fire resistant structure specified by general rules, such as a zinc-plated roof structure.
【0006】個別指定;湿式吹き付けロックウール被
覆鉄骨構造、ひる石プラスター被覆鉄骨耐火構造、水酸
化アルミニウム・セメント系吹き付け材被覆鉄骨耐火構
造、コンクリート充填鋼管耐火構造、石綿セメント押出
成形板被覆鉄骨耐火構造、ALC板被覆鉄骨耐火構造、
湿式せっこう系吹き付け材被覆鉄骨耐火構造、石綿セメ
ント押出成形板間仕切壁耐火構造、両面無機繊維強化石
膏ボード重ね張り軽量鉄骨下地間仕切壁耐火構造、立体
金網入り両面セメントモルタル吹き付け発泡ポリエチレ
ン板充填外壁耐火構造、パーライト入り鉄網モルタル板
外壁耐火構造、両面溶接金網入りセメントモルタル発泡
ポリスチレン板充填外壁耐火構造、ALC床板耐火構
造、湿式吹き付けひる石被覆デッキプレートコンクリー
ト床耐火構造、湿式吹き付けロックウール被覆コンクリ
ートデッキプレート床耐火構造、亜鉛鉄板パーライト吹
き付け折板屋根耐火構造、セルローズファイバー吹き付
け亜鉛鉄板折板屋根耐火構造、湿式せっこう系吹き付け
材金属折板屋根耐火構造など。Individually specified; wet-sprayed rock wool-coated steel frame structure, vermiculite plaster-coated steel frame fire-resistant structure, aluminum hydroxide / cement-based spray material-coated steel frame fire-resistant structure, concrete-filled steel pipe fire-resistant structure, asbestos cement extruded plate-coated steel frame fire-resistant structure , ALC plate coated steel frame refractory structure,
Wet gypsum spraying material coated steel frame fireproof structure, asbestos cement extruded plate partition wall fireproof structure, double-sided inorganic fiber reinforced gypsum board laminated lightweight steel base partition wall fireproof structure, double-sided cement mortar with three-dimensional wire mesh foamed polyethylene foam filled outer wall fireproof Structure, fireproof structure of perforated iron mesh mortar board outer wall, double-sided welded wire mesh cement mortar expanded polystyrene board filled fireproof structure, ALC floor board fireproof structure, wet sprayed vermiculite coated deck plate concrete floor fireproof structure, wet sprayed rock wool coated concrete deck Plate floor fireproof structure, zinc iron sheet perlite sprayed fired roof structure, cellulosic fiber sprayed zinc iron sheet fired roof structure, wet gypsum sprayed metal metal sheet fireproof structure, etc.
【0007】建築基準法38条指定;ロックウール薄
厚被覆FR鋼耐火構造、水酸化アルミニウム・セメント
系吹き付け材被覆FR鋼耐火構造、発泡耐火塗料被覆鉄
骨耐火構造など。更に、これらの耐火構造が実際の火災
の際にどの程度の耐火性能を発揮するかを規定するため
に、建設省告示第2999号に耐火試験などについて決
められている。[0007] Article 38 of the Building Standards Law; rock wool thin-coated FR steel refractory structure, aluminum hydroxide / cement-based spraying material-coated FR steel refractory structure, foamed refractory paint-coated steel frame refractory structure, etc. Further, in order to specify the degree of fire resistance performance of these fire-resistant structures in the event of an actual fire, a fire test and the like are specified in Notification No. 2999 of the Ministry of Construction.
【0008】この中で試験方法は、所定の規格の試験体
に対して、所定の加熱時間や加熱温度などの加熱条件に
て加熱を行なうものである。そして、この試験におい
て、試験体の耐火構造に亀裂や脱落などの問題が生じな
かった(或は許容範囲内である)ものが、その試験時間
毎に区分されて、1時間耐火,2時間耐火,3時間耐火
などと表現される。[0008] In this test method, a test specimen of a predetermined standard is heated under a heating condition such as a predetermined heating time and a predetermined heating temperature. In this test, those having no problems such as cracks or dropouts in the refractory structure of the test piece (or within the allowable range) are classified according to the test time, and are refractory for one hour and two hours. , 3 hours fire resistance, etc.
【0009】[0009]
【発明が解決しようとする課題】しかしながら、上述し
た耐火構造では、それぞれ一長一短があり、一層の改善
が望まれていた。例えば、構造用鉄骨を非発泡性の耐火
被覆材である乾式ロックウールで被覆する場合には、建
設省告示第2999号に規定の耐火試験による1時間,
2時間,3時間耐火性能を得るのに、各々30mm厚,
45mm厚,60mm厚の乾式ロックウール被覆を必要
とし、十分な耐火性能を得るためには、その被覆をかな
り厚くしなければならないという問題があった。However, the above-mentioned refractory structures have advantages and disadvantages, and further improvement has been desired. For example, when a structural steel frame is coated with dry rock wool, which is a non-foaming fire-resistant coating material, it is necessary to use a fire resistance test specified in Ministry of Construction Notification No. 2999 for one hour,
To get fire resistance for 2 hours and 3 hours,
There is a problem that a 45 mm thick and 60 mm thick dry rock wool coating is required, and the coating must be considerably thick in order to obtain sufficient fire resistance.
【0010】このことは、乾式ロックウールに限らず、
例えば軽量モルタルなどの非発泡性の耐火被覆材を使用
する場合に、一般に言えることであった。つまり、この
種の耐火被覆材は耐火性能が優れかつ安定しているが、
所定の耐火性能を得るためには、耐火被覆材をかなり厚
く塗らなければならなかった。そのため、耐火被覆材を
塗布する作業に手間がかかったり、厚く塗布するために
建物の利用空間が狭くなったり、厚く塗るためにかえっ
て自身の重量で剥がれ易くなるという問題があった。特
に、耐火被覆材を従来の塗布用機器にて塗布する際に
は、1回で塗布できる厚さに限界があるので、要求され
る耐火性能が大きな場合には、何度も塗布作業を繰り替
えす必要があるという問題があった。[0010] This is not limited to dry rock wool,
For example, this was generally the case when using non-foaming refractory coatings such as lightweight mortar. In other words, this type of refractory coating has excellent and stable fire performance,
In order to obtain the required fire resistance performance, the fire-resistant coating material had to be applied quite thickly. For this reason, there has been a problem that the work of applying the fire-resistant coating material is troublesome, the use space of the building is reduced due to the thick coating, and the coating is easily peeled off by its own weight instead of the thick coating. In particular, when applying a fire-resistant coating material using conventional coating equipment, there is a limit to the thickness that can be applied in a single application. Had to be done.
【0011】一方、発泡性耐火塗料を使用する場合に
は、それほど厚く塗る必要がないので、塗布機器はやや
小型でも施工できる利点はあるが、塗料的粘度・粘性の
ためタレやすく1回の塗布厚に限界があり吹き重ねの必
要性や、上記非発泡性の耐火被覆材に比べて、耐火性能
の安定性や確実性に不安がある。つまり、実際の火災の
際に確実に発泡して、所定の厚さの安定した断熱層を形
成できるか否かに多少の不安がある。また、発泡性耐火
塗料による被覆層は、通常環境下ではそれ自体の表面強
度はあるが、火災環境下で一旦発泡すると強度が大きく
低下するので、火災時に(発泡した)断熱層に何等かの
部材が接触した場合あるいは風圧などにより、容易に断
熱層が剥離して脱落しまうという不安もある。On the other hand, when using a foaming refractory paint, it is not necessary to apply it so thickly. Therefore, there is an advantage that the application device can be applied even if it is a little small. There is a limit to the thickness, and there is a concern about the necessity of repeated blowing and the stability and certainty of the fire resistance performance as compared with the non-foaming fire-resistant covering material. In other words, there is some anxiety about whether foaming can be surely made in the event of an actual fire and a stable heat insulating layer having a predetermined thickness can be formed. In addition, a coating layer made of a foaming refractory paint has its own surface strength under a normal environment, but once foamed in a fire environment, the strength is greatly reduced. There is a concern that the heat insulating layer is easily peeled off and dropped off when the members come into contact or due to wind pressure or the like.
【0012】本発明は、上記課題を解決するためになさ
れたものであり、十分な耐火性能及び信頼性を有すると
ともに、耐火用の被覆(以下耐火層と称す)の厚さを従
来より薄くすることができ、しかもその工法を簡易化で
きるハイブリッド耐火被覆構造体及びその耐火被覆工法
を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has sufficient fire resistance and reliability, and has a thinner fire-resistant coating (hereinafter referred to as a fire-resistant layer) than before. It is an object of the present invention to provide a hybrid fire-resistant coating structure and a fire-resistant coating method capable of simplifying the method.
【0013】[0013]
【課題を解決するための手段】この目的を達成するため
になされた請求項1の発明は、一部又は全体に鉄を使用
した基本構造体と、該基本構造体の表面側に塗布により
形成された非発泡性耐火被覆材層と、該非発泡性耐火被
覆材層の表面側に塗布により形成された発泡性耐火塗料
層と、を備えるとともに、上記非発泡性耐火被覆材が、
複合軽量骨材混入モルタルであり、その成分中に有機質
発泡体粉末又は粒を含むことを特徴とするハイブリッド
耐火被覆構造体を要旨とする。Means for Solving the Problems According to a first aspect of the present invention, there is provided a basic structure using iron partially or entirely, and a method of forming the basic structure by coating on the surface side of the basic structure. a non-foaming fireproofing material layer which is a non-expandable fireproofing material layer foamable refractory coating layer formed by coating on the surface side of the, with obtaining Bei a, the non-foaming fireproofing material,
This is a composite lightweight mortar mixed with aggregate and contains organic
The gist of the present invention is a hybrid fire-resistant coating structure comprising foam powder or granules .
【0014】請求項2の発明は、上記基本構造体が、鉄
骨の柱又は梁であることを特徴とする上記請求項1記載
のハイブリッド耐火被覆構造体を要旨とする。請求項3
の発明は、上記基本構造体が、一部に鉄を含む壁又は床
であることを特徴とする上記請求項1記載のハイブリッ
ド耐火被覆構造体を要旨とする。According to a second aspect of the present invention, there is provided a hybrid fire-resistant covering structure according to the first aspect, wherein the basic structure is a steel column or beam. Claim 3
The gist of the invention is that the basic structure is a wall or a floor partially containing iron.
【0015】[0015]
【0016】尚、上記非発泡性耐火被覆材層と発泡性耐
火塗料層との厚さを、建設省告示第2999号に規定す
る耐火試験方法による耐火構造の性能区分に応じて、下
記表1の厚さとしてもよい。 [0016] Incidentally, the thickness between the non-foaming fireproofing material layer and the foamed refractory coating layer, depending on the performance division of the refractory structure by fire test method specified in Ministry of Construction Notice No. 2999, under
It may be used as the thickness of the serial Table 1.
【表1】 [Table 1]
【0017】請求項4の発明は、上記基本構造体が、非
発泡性耐火被覆材層と発泡性耐火塗料層との中間に仲介
的に中塗り塗料層を有することを特徴とする上記請求項
1ないし3のいずれか記載のハイブリッド耐火被覆構造
体を要旨とする。According to a fourth aspect of the present invention, the basic structure has an intermediate coating layer interposed between the non-foamable fire-resistant coating material layer and the foamable fire-resistant paint layer. The gist is the hybrid fire-resistant coating structure according to any one of 1 to 3 .
【0018】請求項5の発明は、上記基本構造体の角部
を覆う非発泡性耐火被覆材層の出隅部に対して、曲線状
に面取りを施し、該面取りを施した出隅部の表面に、上
記中塗り塗料層を介し又は介さずして、発泡性耐火塗料
層をほぼ均一の厚さに形成したことを特徴とする上記請
求項1ないし4のいずれか記載のハイブリッド耐火被覆
構造体を要旨とする。請求項6の発明は、上記基本構造
体の角部を覆う非発泡性耐火被覆材層の出隅部に対し
て、直線状に面取りを施し、該面取りを施した出隅部の
表面に、上記中塗り塗料層を介し又は介さずして、発泡
性耐火塗料層をほぼ均一の厚さに形成したことを特徴と
する上記請求項1ないし4のいずれか記載のハイブリッ
ド耐火被覆構造体を要旨とする。 [0018] The invention of claim 5, to the external corner portion of the non-foaming fireproofing material layer covering the corners of the base structure, curved
The foamed refractory paint layer having a substantially uniform thickness is formed on the surface of the corner where the chamfer has been performed, with or without the intermediate coating layer. The gist is a hybrid fire-resistant coating structure according to any one of claims 1 to 4 . The invention according to claim 6 provides the basic structure
For the protruding corner of the non-foamable refractory coating that covers the corners of the body
And straight-chamfered, and
On the surface, with or without the intermediate coating layer, foaming
The characteristic feature is that the refractory paint layer is formed to a substantially uniform thickness.
The hybrid according to any one of claims 1 to 4,
The main point is a fireproof covering structure.
【0019】請求項7の発明は、非発泡性耐火被覆材と
して、成分中に有機質発泡体粉末又は粒を含む複合軽量
骨材混入モルタルを用い、一部又は全体に鉄を使用した
基本構造体の表面側を、上記非発泡性耐火被覆材を塗布
して覆った後に、上記中塗り塗料層を介し又は介さずし
て、該非発泡性耐火被覆材の表面側を、発泡性耐火塗料
を塗布して覆ったことを特徴とするハイブリッド耐火被
覆工法を要旨とする。The invention according to claim 7 is characterized in that a non-foamable refractory coating material is provided.
The composite lightweight containing organic foam powder or granules in the component
Using aggregate mixing mortar, the surface side of the base structure using iron part or whole, after covering by applying the non-foaming fireproofing material, to not over or passing through the intermediate coating layer The gist of the present invention is a hybrid fire-resistant coating method, characterized in that the surface of the non-foamable fire-resistant coating material is covered by applying a foaming fire-resistant paint.
【0020】次に、上述した本発明の各構成について、
詳しく説明する。 (1)上記基本構造体としては、H形鋼、みぞ形鋼、I
形鋼、等辺山形鋼、不当辺山形鋼、角形鋼管、丸形鋼管
などの通常使用される鉄骨、鋼管が挙げられるが、それ
以外にも、軽量鉄骨と他の材料、例えば金網、メタルラ
ス、石膏ラスボード、ラスカット合板などの下地材や石
膏ボード、けい酸カルシウム板、繊維混入セメントけい
酸カルシウム板、硬質木片セメント板、パルプ混入石綿
セメント板、スラグ石膏セメント板、ガラス繊維混入ス
ラグ石膏板、石綿セメント押出成形板、繊維混入セメン
トパーライト板などの窯業サイディング板やPC板、A
LC板による下地材との組み合せなどが挙げられる。Next, with respect to each configuration of the present invention described above,
explain in detail. (1) As the basic structure, H-shaped steel, grooved steel, I
Commonly used steel frames and steel pipes, such as shaped steel, equilateral angle steel, unequal angle iron, square steel pipe, round steel pipe, etc., are also included, as well as lightweight steel frames and other materials such as wire mesh, metal lath, gypsum Base materials such as lath board, ruth cut plywood, gypsum board, calcium silicate board, fiber cement cement calcium silicate board, hard wood chip cement board, pulp mixed asbestos cement board, slag gypsum cement board, glass fiber mixed slag gypsum board, asbestos cement Extruded board, ceramic siding board and PC board such as fiber-mixed cement perlite board, A
Combination with a base material using an LC plate and the like can be given.
【0021】(2)この基本構造体に使用する鉄材とし
ては、通常は構造用鋼材を使用できるが、FR鋼を使用
すると更に好適である。このFR鋼とは、従来の構造用
鋼材に比べ耐熱特性を高めたもので、600℃での降伏
強度が、常温での降伏強度の2/3以上である鋼材であ
り、これによって、耐火被覆を軽減できる。(2) As the iron material used for the basic structure, a structural steel material can be usually used, but it is more preferable to use FR steel. This FR steel is a steel material having a higher heat resistance than a conventional structural steel material, and has a yield strength at 600 ° C. that is 2 or more of a yield strength at room temperature. Can be reduced.
【0022】(3)耐火被覆材や耐火塗料などの耐火と
いう用語は、本出願の場合、通常に使用される耐火構造
体の耐火という意味や、準耐火構造における準耐火の意
味である。 (4)非発泡性耐火被覆材としては、複合軽量骨材混入
モルタルを用い、その成分中に有機質発泡体粉末又は粒
を含んでいる。例えば下記〜のものを含んだ材料及
びそれらの組み合せを採用できる。セメントモルタル
パーライトモルタル、ひる石モルタル乾式吹き付け
ロックウール、半乾式吹き付けロックウール湿式吹き
付けロックウール、ひる石プラスター吹き付け材、水酸
化アルミニウム系吹き付け材、湿式現場起泡剤混入モル
タル、湿式現場発泡型モルタルセルローズファイバー
系吹き付け材(3) The term fireproof such as a fireproof coating material or a fireproof paint means, in the case of the present application, fireproof of a fireproof structure usually used, or quasifireproof in a quasifireproof structure. (4) As a non-foaming fireproof coating material , compound lightweight aggregate is mixed
Use mortar and add organic foam powder or granules
Contains. For example Ru can accept the material及<br/> beauty combinations thereof, including those below ~. Cement mortar perlite mortar, vermiculite mortar dry sprayed rock wool, semi-dry sprayed rock wool wet sprayed rock wool, vermiculite plaster sprayed material, aluminum hydroxide sprayed material, wet site foaming agent mixed mortar, wet site foamed mortar cellulose Fiber spray material
【0023】(5)発泡性耐火塗料とは、火災時の様に
高い熱を受けた場合に、発泡して熱絶縁効果を有する断
熱層を形成するものである。 (6)この発泡性耐火塗料は、例えば下記の結合剤や発
泡剤や炭化層形成剤などを含むものを採用できるが、同
様な機能を発揮するものであれば、これに限定されるも
のではない。(5) Foamable refractory paint is one that foams to form a heat insulating layer having a heat insulating effect when subjected to high heat as in a fire. (6) As the foamable refractory paint, for example, a paint containing the following binder, foaming agent, carbonized layer-forming agent, and the like can be adopted, but is not limited thereto as long as it exhibits the same function. Absent.
【0024】a)結合剤 (1)アルキド樹脂 純アルキド樹脂;超短油、短油、中油、長油、超長油
などのアルキド樹脂 変性アルキド樹脂;ロジン変性、フェノール変性、エ
ポキシ変性、スチレン化、アクリル化、ウレタン変性、
シリコン変性、アミノ樹脂変性などのアルキド樹脂 オイルフリーアルキド樹脂;オイルフリー、高分子量
オイルフリー、超短油、不乾性油変性短油、乾性油変性
中油、乾性油変性長油、乾性油変性超長油、ロジン変
性、フェノール変性、エポキシ変性、スチレン化、アク
リル化、ウレタン変性、シリコン変性、アミノ樹脂変性
などのアルキド樹脂 〜の架橋剤;アミノ樹脂、ニトロセルロース、金属
塩ドライヤー、ウレタンなどのアルキド樹脂硬化剤 (2)アミノ樹脂 メラミン樹脂;ブチル化メラミン樹脂、メチル化メラ
ミン樹脂、ベンゾグアナミン樹脂 尿素樹脂;ブチル化尿素メラミン樹脂 〜の架橋剤;酸または加熱 (3)ビニル系樹脂 塩化ビニル樹脂;塩化ビニル樹脂、塩化ビニル樹脂と
の共重合体、塩化ビニリデン系樹脂 酢酸ビニル樹脂;酢酸ビニル樹脂、酢酸ビニル樹脂と
の共重合体 ポリビニルアルコール ポリビニルブチラール (4)アクリル樹脂 熱可塑性アクリル樹脂 熱硬化性アクリル樹脂 変性アクリル樹脂 の架橋剤;アミノ樹脂、エポキシ樹脂、ポリイソシア
ネート、メラミン、ポリカルボン酸化合物、金属ドライ
ヤー (5)エポキシ樹脂 グリシジルエーテル型;ビスフェノールA型、ビスフ
ェノールF型、フェノールノボラック型、エポキシ樹脂
+ノボラック樹脂、臭素化ビスフェノールA型、2、6
キシレノール型、オルソクレゾールノボラック型、ビス
フェノールAノボラック型、三官能型 グリシジルエステル型;ダイマー酸、多価カルボン酸
エステル型 グリシジルアミン型;芳香族アミン型 環状脂肪族型 自己乳化型親水性エポキシ樹脂 一液変性エポキシ樹脂 〜のエポキシ樹脂硬化剤;ポリメルカプタン、脂肪
族ポリアミン、芳香族ポリアミン、ポリアミド、三級ア
ミン、ジェチルアミノプロピルアミン、イミダゾール、
三級アミン塩、脂環式アミン、金属ドライヤー (6)ポリウレタン樹脂 一液型ポリウレタン樹脂;油変性ポリウレタン樹脂、
ラッカー型ポリウレタン樹脂 二液型ポリウレタン樹脂;ポリオール硬化型ポリウレ
タン樹脂(ポリオールの種類;アクリルポリオール、ポ
リエステルポリオール、イソシアネートプレポリマー) の硬化剤;各種イソシアネート、ポリイソシアネート (7)不飽和ポリエステル樹脂と金属ドライヤー架橋剤 (8)フェノール樹脂 レゾール型、ノボラック型 の硬化剤;酸、アルカリ (9)NAD樹脂(アクリル系非水エマルション) アルキド樹脂を分散安定剤としたアクリル樹脂分散体 アルキル化メラミン樹脂を分散安定剤としたアクリル
樹脂分散体 (10)合成樹脂エマルション 酢酸ビニル系;酢酸ビニル樹脂エマルション、酢酸ビ
ニル共重合樹脂エマルション、エチレン酢ビ共重合樹脂
エマルション、酢ビアクリル共重合樹脂エマルション ベオバ系;酢ビベオバ共重合樹脂エマルション、ベオ
バアクリル共重合樹脂エマルション;ここでベオバとは
シェルケミカル社の商品名でバーサチック酸ビニルを意
味する。 アクリル系;各種アクリル酸エステル共重合樹脂エマ
ルション、自己架橋型アクリル樹脂エマルション スチレンアクリル系;スチレンアクリル酸エステル共
重合樹脂エマルション エポキシ樹脂エマルション ウレタン樹脂エマルション シリコーン樹脂エマルション、変性シリコーン樹脂エ
マルション (11)水溶性樹脂; 水溶性アルキド樹脂 水溶性アクリル変性アルキド樹脂 水溶性オイルフリーアルキド樹脂 水溶性アクリル樹脂 水溶性エポキシエステル樹脂 水溶性メラミン樹脂 (12)塩素化ポリオレフィン樹脂 塩素化ポリエチレン 塩素化ポリプロピレン (13)シリコーン樹脂 ストレートシリコーン樹脂 変性シリコーン樹脂;アルキド変性、エポキシ変性、
ポリエステル変性、アクリル変性、ウレタン変性のシリ
コーン樹脂 (14)その他結合剤;キシレン樹脂、ケトン樹脂、再乳化
形樹脂、特開平2−49074号に特定するエチレン系
共重合体結合剤、特開平4−175152号に特定する
結合剤、特開平5−86310号に特定する一液変性エ
ポキシ樹脂、珪酸アルカリ金属塩(各種水ガラス)、コ
ロイダルシリカ、水硬性セメント、焼石膏など(1)〜(1
4)の単独および/または2種以上の複合使用。A) Binder (1) Alkyd resin Pure alkyd resin; alkyd resin modified with alkyd resin such as ultrashort oil, short oil, medium oil, long oil, ultralong oil; rosin modified, phenol modified, epoxy modified, styrenated , Acrylated, urethane modified,
Alkyd resins such as silicone-modified and amino-resin-modified Oil-free alkyd resins; oil-free, high-molecular-weight oil-free, ultra-short oil, non-drying oil-modified short oil, dry-oil-modified medium oil, dry-oil-modified long oil, dry-oil-modified ultra-long Oil, rosin-modified, phenol-modified, epoxy-modified, styrenated, acrylated, urethane-modified, silicone-modified, amino-resin-modified alkyd resins-Crosslinker; amino resins, nitrocellulose, metal salt dryers, alkyd resins such as urethane Curing agent (2) Amino resin Melamine resin; Butylated melamine resin, methylated melamine resin, benzoguanamine resin Urea resin; Butylated urea melamine resin Crosslinking agent; Acid or heating (3) Vinyl resin Vinyl chloride resin; Vinyl chloride Resin, copolymer with vinyl chloride resin, vinylidene chloride resin vinyl acetate resin; Copolymer with vinyl acid resin and vinyl acetate resin Polyvinyl alcohol Polyvinyl butyral (4) Acrylic resin Thermoplastic acrylic resin Thermosetting acrylic resin Crosslinking agent for modified acrylic resin; amino resin, epoxy resin, polyisocyanate, melamine, polycarboxylic Acid compound, metal dryer (5) Epoxy resin glycidyl ether type; bisphenol A type, bisphenol F type, phenol novolak type, epoxy resin + novolak resin, brominated bisphenol A type, 2, 6
Xylenol type, orthocresol novolak type, bisphenol A novolak type, trifunctional glycidyl ester type; dimer acid, polycarboxylic acid ester type glycidylamine type; aromatic amine type cycloaliphatic self-emulsifying hydrophilic epoxy resin one-pack Modified epoxy resin Epoxy resin curing agent: polymercaptan, aliphatic polyamine, aromatic polyamine, polyamide, tertiary amine, getylaminopropylamine, imidazole,
Tertiary amine salt, alicyclic amine, metal dryer (6) Polyurethane resin One-pack type polyurethane resin; oil-modified polyurethane resin,
Lacquer type polyurethane resin Two-pack type polyurethane resin; Polyol-curable polyurethane resin (type of polyol; acrylic polyol, polyester polyol, isocyanate prepolymer) curing agent; various isocyanates, polyisocyanates (7) Crosslinking of unsaturated polyester resin and metal dryer (8) Phenolic resin Resol type, novolak type curing agent; acid, alkali (9) NAD resin (acrylic non-aqueous emulsion) Acrylic resin dispersion using alkyd resin as dispersion stabilizer Alkylated melamine resin as dispersion stabilizer Acrylic resin dispersion (10) Synthetic resin emulsion Vinyl acetate system; Vinyl acetate resin emulsion, Vinyl acetate copolymer resin emulsion, Ethylene vinyl acetate copolymer resin emulsion, Biacrylate vinyl acetate copolymer resin emulsion Viveova copolymer resin emulsion, Beova acrylic copolymer resin emulsion; where "veova" is a trade name of Shell Chemical Company, meaning vinyl versatate. Acrylics; various acrylate copolymer resin emulsions, self-crosslinking acrylic resin emulsions Styrene acrylics: styrene acrylate copolymer resin emulsions Epoxy resin emulsions Urethane resin emulsions Silicone resin emulsions, modified silicone resin emulsions (11) Water-soluble resins Water-soluble alkyd resin water-soluble acryl-modified alkyd resin water-soluble oil-free alkyd resin water-soluble acrylic resin water-soluble epoxy ester resin water-soluble melamine resin (12) chlorinated polyolefin resin chlorinated polyethylene chlorinated polypropylene (13) silicone resin straight silicone Resin-modified silicone resin; alkyd-modified, epoxy-modified,
Polyester-modified, acrylic-modified, urethane-modified silicone resin (14) Other binders: xylene resin, ketone resin, re-emulsifying resin, ethylene-based copolymer binder specified in JP-A-2-49074, JP-A-4-1992 No. 175152, a one-component modified epoxy resin specified in JP-A-5-86310, alkali metal silicates (various water glasses), colloidal silica, hydraulic cement, calcined gypsum, etc.
4) Use alone and / or in combination of two or more.
【0025】b)発泡剤 (1)塩素化パラフィン (2)含窒素化合物系発泡剤;メラミン、ジシアンジアミ
ド、アゾジカルボイミド、尿素、メラミン初期縮合物、
尿素縮合物、イソシアヌール酸縮合物、メラミン樹脂粉
末、ジシアンジアミドリン酸縮合物、ジシアンジアミド
樹脂、ホルムアルデヒド誘導体、ソルビット、マンニッ
ト、グリセリン、トリメチロールプロパン、パラホルム
アルデヒド、ヘキサメチレンテトラミン、メチロール化
尿素、メチロール化ジシアンジアミド、メチロール化チ
オ尿素、 (3)リン酸メラミン、リン酸グアニジン、グアニル尿
素、炭酸グアニジン、珪酸グアニジン、タイロース、ジ
オキサン (4)有機発泡剤;アゾ系発泡剤、ニトロソ系発泡剤、ア
ゾジカルボンアミド、アゾビスイソブチロニトリル、
N.N′−ジニトロソペンタメチレン、ベンゾスルホヒ
ドラジド (5)熱膨張性マイクロカプセル;ミクロパールF−3
0、ミクロパールF−50、ミクロパールF−80(松
本油脂社製) (6)膨張黒鉛;黒鉛酸性硫酸塩、Na黒鉛、K黒鉛、ハ
ロゲン化黒鉛、塩化アルミニウム黒鉛、塩化第二鉄黒鉛 (7)水ガラス系;粒状水ガラス、アルカリ金属珪酸塩、
アルカリ金属メタ珪酸塩、和水水ガラス、含水珪酸アル
カリ粉末 (8)泡性無機粉末;真珠岩粉末、黒耀石粉末、シラス粉
末、ヒル石粉末、リン酸アルミニウム、水酸化アルミニ
ウム、ゼオライト、珪藻土、人造熱発泡性無機物 (9)
炭酸水素塩;炭酸水素カリウム、炭酸水素ナトリウム c)炭化層形成剤 (1)多価アルコール;ペンタエリトリトール、テトラエ
タノールメタン、ジペンタエリトリトール、トリペンタ
エリトリトール、エチレングリコール、トリメチロール
プロパン、マンニット (2)多糖類;でんぷん、セルロース、蔗糖 (3)カゼイン、パラフォルムアルデヒド d)脱水触媒兼発泡剤 (1)リンまたはリン化合物;五酸化リン、亜リン酸、正
リン酸、ポリリン酸、リン酸アンモニウム、リン酸三ナ
トリウム、トリクレジルホスフェート、メラミンホスフ
ェート、オキシ塩化リン、五塩化リン (2)耐水化リン化合物;マイクロカプセル化ポリリン酸
アンモニウム、マイクロカプセル化メラミンホスフェー
ト (3)リン酸塩化合物;ポリリン酸アミド、ポリリン酸ア
ンモニウム、ポリリン酸カリウム、リン酸メラミン e)特種添加剤 (1)発泡性安定剤;チタン、ジルコニウム、クロム、ホ
ウ素などの炭化物、窒化物、炭・窒化物 (2)発泡性安定剤;偏平状タルク、偏平状マイカ (3)発泡性安定剤;シリコン樹脂超微粉末 f)繊維 (1)人工無機質繊維ロックウール、ガラス繊維、シリカ
アルミナ繊維、セラミックス繊維 (2)人工有機質繊維;炭素繊維、アラミド繊維 g)無機質充填剤 (1)体質顔料;水酸化アルミニウム、シリカ、タルク、
硫酸バリウム、クレー、炭酸カルシウム、酸化チタン、
マイカ、粘土、シラス、寒水石、硅砂、硅石紛、二価以
上の金属酸化物、二価以上の水酸化物 (2)着色顔料;酸化チタン、ベンガラ、オーカ (3)軽量骨材;パーライト、焼成ひる石、シラスバルー
ン、ガラスバルーン、セラミックバルーンなど h)その他 (1)塗料用添加剤;溶剤、可塑剤、造膜助剤、増粘剤
(CMC,HEC,PVAなど)、活性剤(アニオン、
ノニオン、カチオン、両性型)、分散剤、消泡剤 (2)難燃剤;ハロゲン化合物、有機ハロゲン化合物、ア
ンチモン化合物、有機リン系化合物、スルファミン酸ア
ンモニウム、リン酸グアニル尿素 (7)上記請求項4の複合軽量骨材混入モルタルとして
は、例えば下記の組成である。B) Blowing agent (1) Chlorinated paraffin (2) Nitrogen-containing compound blowing agent; melamine, dicyandiamide, azodicarboximide, urea, melamine precondensate,
Urea condensate, isocyanuric acid condensate, melamine resin powder, dicyandiamide phosphoric acid condensate, dicyandiamide resin, formaldehyde derivative, sorbite, mannitol, glycerin, trimethylolpropane, paraformaldehyde, hexamethylenetetramine, methylolated urea, methylolated Dicyandiamide, methylolated thiourea, (3) melamine phosphate, guanidine phosphate, guanylurea, guanidine carbonate, guanidine silicate, tylose, dioxane (4) Organic foaming agents; azo foaming agents, nitroso foaming agents, azodicarbonamide , Azobisisobutyronitrile,
N. N'-dinitrosopentamethylene, benzosulfohydrazide (5) Thermally expandable microcapsules; Micropearl F-3
0, Micropearl F-50, Micropearl F-80 (Matsumoto Yushi Co., Ltd.) (6) Expanded graphite; graphite acid sulfate, Na graphite, K graphite, halogenated graphite, aluminum chloride graphite, ferric chloride graphite ( 7) Water glass type; granular water glass, alkali metal silicate,
Alkali metal metasilicate, hydrated water glass, hydrous alkali silicate powder (8) Foaming inorganic powder; perlite powder, anorthite powder, shirasu powder, hillite powder, aluminum phosphate, aluminum hydroxide, zeolite, diatomaceous earth , Synthetic thermal foaming inorganics (9)
Bicarbonate; potassium bicarbonate, sodium bicarbonate c) Carbonized layer forming agent (1) Polyhydric alcohol; pentaerythritol, tetraethanolmethane, dipentaerythritol, tripentaerythritol, ethylene glycol, trimethylolpropane, mannitol (2 ) Polysaccharides; Starch, cellulose, sucrose (3) Casein, paraformaldehyde d) Dehydration catalyst and blowing agent (1) Phosphorus or phosphorus compound; Phosphorus pentoxide, phosphorous acid, orthophosphoric acid, polyphosphoric acid, ammonium phosphate , Trisodium phosphate, tricresyl phosphate, melamine phosphate, phosphorus oxychloride, phosphorus pentachloride (2) Water-resistant phosphorus compound; microencapsulated ammonium polyphosphate, microencapsulated melamine phosphate (3) phosphate compound; polyphosphorus Acid amide, ammonium polyphosphate , Potassium polyphosphate, melamine phosphate e) Special additives (1) Foaming stabilizer; carbide, nitride, charcoal / nitride such as titanium, zirconium, chromium, boron, etc. (2) Foaming stabilizer; flat talc , Flat mica (3) Foaming stabilizer; ultrafine powder of silicone resin f) Fiber (1) Artificial inorganic fiber rock wool, glass fiber, silica alumina fiber, ceramic fiber (2) Artificial organic fiber; carbon fiber, aramid fiber g) Inorganic filler (1) extender pigment: aluminum hydroxide, silica, talc,
Barium sulfate, clay, calcium carbonate, titanium oxide,
Mica, clay, shirasu, cold water stone, silica sand, silica powder, divalent or higher metal oxide, divalent or higher hydroxide (2) coloring pigments; titanium oxide, red iron oxide, orca (3) lightweight aggregate; perlite, Calcined vermiculite, shirasu balloon, glass balloon, ceramic balloon, etc. h) Others (1) paint additives; solvents, plasticizers, film-forming aids, thickeners (CMC, HEC, PVA, etc.), activators (anions) ,
Nonionic, cationic, amphoteric type), dispersant, defoamer (2) flame retardant; halogen compound, organic halogen compound, antimony compound, organic phosphorus compound, ammonium sulfamate, guanyl urea phosphate The composite mortar mixed with the lightweight aggregate has the following composition, for example.
【0026】水硬性セメントと、天然又は人工の軽量骨
材とからなり、しかも、この天然又は人工の軽量骨材
が、シラスバルーン、パーライト、焼成ひる石、ガラス
バルーンのいずれか1種以上と、有機質発泡体粉末(又
は粒)の0.05〜5.0重量%とからなるものである。
この有機質発泡体の例としては、発泡スチロール,発泡
ウレタン,発泡ポリエチレン,発泡ポリプロピレンなど
が例示できる。更に、このモルタルには、水酸化アルミ
ニウムないし炭酸カルシウムないし再乳化形粉末樹脂と
を含み、モルタルの組成物の硬化体の絶乾比重が0.1
〜1.8である。The hydraulic cement comprises a hydraulic cement and a natural or artificial lightweight aggregate, and the natural or artificial lightweight aggregate comprises at least one of shirasu balloon, perlite, calcined vermiculite, and glass balloon, 0.05 to 5.0% by weight of the organic foam powder (or particles).
Examples of the organic foam include styrene foam, urethane foam, polyethylene foam, polypropylene foam, and the like. Further, the mortar contains aluminum hydroxide, calcium carbonate, or a re-emulsified powder resin, and the cured product of the mortar composition has an absolute dry specific gravity of 0.1.
11.8.
【0027】(8)上記表1の1時間耐火構造及び2時
間耐火構造の建設省告示第2999号の規定としては、
柱,梁,壁,床に関するものがあり、3時間耐火構造と
しては、柱,梁に関するものがある。また、上記表1の
各層の厚さのうち、下記表2の範囲のものが、必要とさ
れる耐火性能を有するとともに、作業性及びトータルコ
ストなどの点で有利であるので一層好適である。(8) The provisions of the Ministry of Construction Notification No. 2999 for the one-hour refractory structure and the two-hour refractory structure shown in Table 1 above include:
There are columns, beams, walls, and floors, and the three-hour fireproof structure includes columns and beams. Of the thicknesses of the layers in Table 1, those in the range of Table 2 below are more preferable because they have the required fire resistance and are advantageous in terms of workability and total cost.
【0028】[0028]
【表2】 [Table 2]
【0029】(9)上記仲介的な中塗り塗料層は、主に
非発泡性耐火被覆材層に対し発泡性耐火塗料を施工する
際の吸い込みムラ防止のため、上塗りとなる発泡性耐火
塗料の結合剤がアルカリに弱いアルキッド系樹脂などを
使用した場合における非発泡性耐火被覆材層からのアル
カリの移行を防止するため、あるいは非発泡性耐火被覆
材層に対する発泡性耐火塗料の接着性改善のために使用
する。この中塗り塗料層は、上記発泡性耐火塗料の詳細
な説明に記述している結合剤のうち、超短油,短油,中
油,長油アルキッド樹脂に例示されるアルカリに弱いも
のを除いたものの単独または2種以上の複合したものを
結合剤として、結合剤のみによるものまたは充填剤,骨
材,軽量骨材,体質顔料,着色顔料,有機質繊維,無機
質繊維,増粘剤,分散剤,湿潤剤,溶剤,水などを加え
たもののいずれでも使用できる。また、この中塗り塗料
の使用量は、50g〜3kg/m2程度の範囲で適宜選
択して使用できる。尚、この中塗り塗料層の厚さは、上
記表1,表2においては、非発泡性耐火被覆材層の厚さ
に含めて考えるものとする。[0029] (9) above Kinaka through specific intermediate coating layer is mainly because of the suction preventing unevenness at the time of applying a foamable refractory coating to non-foaming fireproofing material layer, expandable fire as a top coat To prevent the transfer of alkali from the non-foamable fire-resistant coating material layer when the paint binder is alkyd-based resin that is weak to alkali, or to adhere the foamable fire-resistant paint to the non-foamable fire-resistant coating material layer Used for improvement. The intermediate paint layer is formed by removing the binders described in the detailed description of the foamable fire-resistant paint, which are weak to alkali exemplified by ultrashort oil, short oil, medium oil, and long oil alkyd resin. Singly or in combination of two or more of them as binders, only binders or fillers, aggregates, lightweight aggregates, extender pigments, coloring pigments, organic fibers, inorganic fibers, thickeners, dispersants, Any of those to which a wetting agent, a solvent, water and the like are added can be used. The amount of the intermediate coating can be appropriately selected and used within a range of about 50 g to 3 kg / m 2 . In Tables 1 and 2, the thickness of the intermediate coating layer is considered to be included in the thickness of the non-foamable refractory coating material layer.
【0030】(10)また、上述した請求項1〜7の発
明において、下地となる鉄骨の柱,梁などと、非発泡性
耐火被覆材層の間に防錆塗料やアルカリ封止的塗料や仲
介的接着性改良塗料などを必要に応じて、下地処理とし
て従来使用している範囲で使用できる。尚、この場合の
下塗り塗料層の厚さは、上記表1,表2においては、非
発泡性耐火被覆材層の厚さに含めて考えるものとする。(10) Further, in the above-mentioned inventions of claims 1 to 7 , a rust preventive paint or an alkali sealing paint or the like is provided between a steel frame pillar, beam or the like as a base and the non-foamable refractory coating material layer. If necessary, an intermediate adhesion-improving paint or the like can be used within the range conventionally used as a base treatment. In this case, in Tables 1 and 2, the thickness of the undercoat paint layer is considered to be included in the thickness of the non-foamable refractory coating material layer.
【0031】[0031]
【作用】本発明は、鉄系の耐火被覆構造において、優れ
た耐火性能及びその信頼性を確保するとともに、如何に
耐火層の厚さを薄く、しかもその工法を簡易化したらよ
いかという研究の結果得られたものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has been studied to determine how to reduce the thickness of a fire-resistant layer and to simplify the construction method while securing excellent fire-resistance performance and its reliability in an iron-based fire-resistant coating structure. The result was obtained.
【0032】つまり、例えば軽量モルタルなどの非発泡
性の耐火被覆材を用いた場合には、十分な耐火性能及び
信頼性を備えているが厚く塗らなければならず、一方、
発泡性耐火塗料を用いた場合には、薄く塗ればよいがそ
の信頼性などに問題があり、一長一短があったが、本発
明では、それらの欠点を克服して、十分な耐火性能及び
信頼性を有するとともに、被覆膜の膜厚を従来より薄く
することができ、しかもその工法を著しく簡易化したも
のである。That is, for example, when a non-foaming refractory coating material such as lightweight mortar is used, it has sufficient fire resistance and reliability but must be applied thickly.
When the foaming refractory paint is used, it may be applied thinly, but there is a problem in its reliability and the like, which has advantages and disadvantages. However, in the present invention, these disadvantages are overcome and sufficient fire resistance performance and reliability are obtained. And the thickness of the coating film can be made thinner than before, and the construction method has been significantly simplified.
【0033】即ち、請求項1の発明では、基本構造体の
表面側に塗布により形成された非発泡性耐火被覆材層を
備えるとともに、非発泡性耐火被覆材層の表面側に塗布
により形成された発泡性耐火塗料層を備えているので、
耐火性能を十分に確保した上で、両層からなる耐火層の
厚さを薄くすることができる。これは、後述する実験例
でも明かな様に、単に非発泡性耐火被覆材層と発泡性耐
火塗料層とを組み合わせた(1+1)以上の相乗的効果
を発揮し、両層を合わせた耐火層は、その厚さに比べて
予想以上の耐火性能を有する。その上、本発明では、上
記非発泡性耐火被覆材が複合軽量骨材混入モルタルであ
り、その成分中に有機質発泡体粉末又は粒を含む組成で
あるので、施工時においてその水・セメント比を小さく
でき、一度に40mm厚程度まで厚く吹き付けできると
いうメリットの他、軽量モルタルの強度の立ち上がりが
早いという特性も加わり、本発明の様に、第二層として
発泡性耐火塗料を組み合わせた構造体には最も好適なも
のである。 That is, according to the first aspect of the present invention, a non-foamable refractory coating material layer formed by coating is provided on the surface side of the basic structure, and formed on the surface side of the non-foamable refractory coating material layer by coating. Because it has a foamable fire-resistant paint layer,
After ensuring sufficient fire resistance performance, the thickness of the fire resistant layer composed of both layers can be reduced. This is because, as is clear from the experimental examples described later, a synergistic effect of (1 + 1) or more obtained by simply combining the non-foamable refractory coating material layer and the foamable refractory paint layer, Has a fire resistance performance that is higher than expected compared to its thickness. In addition, in the present invention,
The non-foamable fire-resistant coating material is a composite lightweight aggregate mixed mortar.
With a composition containing organic foam powder or granules in its components
Therefore, reduce the water / cement ratio during construction.
It can be sprayed up to about 40mm thick at a time
In addition to the above advantages, the rise in strength of lightweight mortar
It also has the property of being fast, as in the present invention, as a second layer
Most suitable for structures with foamable refractory paint
It is.
【0034】請求項2の発明では、基本構造体が、鉄骨
からなる柱又は梁であるので、耐火層が薄くできるにも
かかわらず、鉄骨に対する耐火性能が向上する。請求項
3の発明では、基本構造体が、一部に鉄を有する壁又は
床であるので、耐火層が薄くできるにもかかわらず、壁
又は床に対する耐火性能が向上する。According to the second aspect of the present invention, since the basic structure is a column or a beam made of a steel frame, the fire resistance performance against the steel frame is improved even though the fire-resistant layer can be made thin. According to the third aspect of the present invention, since the basic structure is a wall or a floor partially having iron, the fire resistance of the wall or the floor is improved even though the fire-resistant layer can be made thin.
【0035】つまり、吹き付け工法、コテ塗り工法など
による壁の耐火構造については、従来、ランナーやスタ
ッドなどの軽量鉄骨+ラス網(又は耐火ボード)+非発
泡性耐火被覆材の組合せであった。更に、吹き付け工
法、コテ塗り工法などによる床の耐火構造については、
コンクリート+デッキプレートの組合せなどに非発泡性
耐火被覆材を吹き付けて仕上げていたが、本発明によれ
ば、これらの壁又は床に関しても、非発泡性耐火被覆材
層及び発泡性耐火塗料層という構成を採用することによ
り、その耐火性能が向上することになる。That is, the fire-resistant structure of the wall by the spraying method, the ironing method or the like has conventionally been a combination of a lightweight steel frame such as a runner or a stud + a lath net (or a fire-resistant board) + a non-foaming fire-resistant covering material. Furthermore, regarding the fire-resistant structure of the floor by spraying method, iron coating method, etc.,
Although the non-foamable refractory coating material is sprayed on the concrete + deck plate combination or the like, according to the present invention, these walls or floors are also referred to as the non-foamable refractory coating material layer and the foamable refractory paint layer. By adopting the configuration, the fire resistance performance is improved.
【0036】また、この壁や床の耐火試験の判定につい
ては、上記建設省告示第2999号の規定によれば、鋼
構造の建築物の場合、壁や床の耐火構造体では最高温度
500℃以下で平均温度400℃以下で有害な剥離や割
れ変形を生じないこととなっているが、本発明では、容
易にその基準をクリアする。According to the provisions of the Ministry of Construction Notification No. 2999, the maximum temperature of a fire-resistant structure of a wall or floor is 500 ° C. in the case of a steel structure. In the following, no harmful peeling or cracking deformation occurs at an average temperature of 400 ° C. or less, but in the present invention, the standard is easily satisfied.
【0037】例えば湿式ロックウール吹き付けによる壁
2時間耐火の例として、個別指定の「耐火 W2100
トムウエットATM−120」の場合は、湿式ロック
ウール吹き付け25mmの被覆厚を必要とするが、本発
明によれば、軽量モルタル10〜15mm+発泡性耐火
塗料4.0〜1.0mmでよく、また例えば湿式ロックウ
ール吹き付けによる床2時間耐火の例として、個別指定
の「耐火 F2083トムウエツトS F−120」の
場合は、湿式ロックウール吹き付け15mmの被覆厚を
必要とするが、本発明によれば、軽量モルタル5〜10
mm+発泡性耐火塗料3.0〜1.0mmでよい。尚、非
発泡性耐火被覆材を薄くする場合は発泡性耐火塗料は厚
めに塗布し、逆に非発泡性耐火被覆材を厚くする場合は
発泡性耐火塗料は薄めに塗布し、それによって合計した
膜厚を非発泡性耐火被覆材単独に比べ薄くすることがで
きる。For example, as an example of fire resistance for 2 hours on a wall by spraying wet rock wool, individually designated fire resistance W2100
In the case of "Tom Wet ATM-120", a coating thickness of 25 mm is required for spraying wet rock wool, but according to the present invention, a lightweight mortar of 10 to 15 mm + a foamable refractory paint of 4.0 to 1.0 mm may be used. For example, as an example of fire resistance for 2 hours on the floor by wet rock wool spraying, in the case of individually designated "fire resistant F2083 Tomwet SF-120", a wet rock wool spraying of 15 mm is required, but according to the present invention, Lightweight mortar 5-10
mm + foamable refractory paint 3.0 to 1.0 mm. When the non-foamable refractory coating material is made thinner, the foamable refractory coating material is applied thicker. Conversely, when the non-foamable refractory coating material is made thicker, the foaming refractory paint material is applied thinner. The film thickness can be made smaller than that of the non-foamable refractory coating material alone.
【0038】[0038]
【0039】[0039]
【0040】請求項4の発明によれば、仲介的な中塗り
塗料層を設けることにより、主に非発泡性耐火被覆材層
に対し発泡性耐火塗料を施工する際の吸い込みムラ防止
や、上塗りとなる発泡性耐火塗料の結合剤がアルカリに
弱いアルキッド系樹脂などを使用した場合のアルカリの
移行防止や、非発泡性耐火被覆材層に対する発泡性耐火
塗料の接着性を改善することができる。According to the fourth aspect of the present invention, by providing an intermediate coating layer, it is possible to prevent suction unevenness when applying the foaming fire-resistant paint mainly to the non-foamable fire-resistant coating material layer, and to provide a top coat. When an alkyd-based resin or the like is used as a binder of the foamable fire-resistant paint, the transfer of alkali can be prevented, and the adhesion of the foamable fire-resistant paint to the non-foamable fireproof coating material layer can be improved.
【0041】請求項5又は6の発明によれば、非発泡性
耐火被覆材層の出隅部に対して、曲線状又は直線状に面
取りを施し、この面取りを施した出隅部の表面に対して
も、中塗り塗料層を介し又は介さずして、発泡性耐火塗
料層をほぼ均一の厚さに形成するので、火災などにより
発泡した場合には、発泡した断熱層が均一に非発泡性耐
火被覆材層の出隅部を覆い、耐火性能にむらがなく、火
災時の耐火性能の確実性が向上する。つまり、出隅部を
例えば直角に仕上げた場合には、火災時などには、出隅
部の発泡性耐火塗料の発泡源が不足して薄くなったり、
割れたり、肌分かれしやすいが、本発明では発泡源が不
足しないため、そのような異常を防止できる。According to the fifth or sixth aspect of the present invention, the corner of the non-foamable refractory coating material is chamfered in a curved or straight line, and the surface of the chamfered corner is formed. On the other hand, the foamable refractory paint layer is formed to a substantially uniform thickness with or without the intermediate paint layer. It covers the protruding corner of the fire-resistant coating material layer, so that the fire resistance is not uneven and the reliability of the fire resistance in a fire is improved. In other words, if the corner is finished at a right angle, for example, in the event of a fire, the foaming source of the foamable refractory paint at the corner will be insufficient and thin,
Although it is easy to be broken or split, the present invention can prevent such an abnormality because the foaming source is not insufficient.
【0042】請求項7の発明によれば、基本構造体の表
面側を、非発泡性耐火被覆材を塗布して覆った後に、中
塗り塗料層を介し又は介さずして、非発泡性耐火被覆材
の表面側を、発泡性耐火塗料を塗布して覆うので、両層
からなる耐火層を極めて容易に形成できることになる。
例えば塗布機器による1回の塗布によって薄く非発泡性
耐火被覆材を塗布した後に乾燥させ、その後薄く発泡性
耐火塗料を塗るだけで、十分な耐火性能を有する耐火層
を形成することが可能であり、しかも発泡性耐火塗料は
化粧層下地層あるいはそれ自体化粧層としての役割も兼
備している。その上、本発明では、上記非発泡性耐火被
覆材が複合軽量骨材混入モルタルであり、その成分中に
有機質発泡体粉末又は粒を含む組成であるので、施工時
においてその水・セメント比を小さくでき、一度に40
mm厚程度まで厚く吹き付けできるというメリットの
他、軽量モルタルの強度の立ち上がりが早いという特性
も加わり、本発明の様に、第二層として発泡性耐火塗料
を組み合わせた工法には最も好適なものである。 According to the invention of claim 7 , after the surface side of the basic structure is coated with a non-foamable fire-resistant coating material, the non-foamable fire-resistant coating material is interposed with or without an intermediate coating layer. Since the surface side of the coating material is coated with the foaming refractory paint, the refractory layer composed of both layers can be formed very easily.
For example, it is possible to form a fire-resistant layer having sufficient fire resistance by simply applying a thin non-foamable refractory coating material by a single application with a coating device and then drying and then applying a thin foamable refractory paint. In addition, the foaming refractory paint also has a role as a decorative layer base layer or as a decorative layer itself. In addition, in the present invention, the non-foamable refractory
The covering material is a composite lightweight aggregate mixed mortar,
Since the composition contains organic foam powder or granules,
Water-cement ratio can be reduced in
The advantage of being able to spray thickly up to about mm thick
In addition, the characteristic that the strength of lightweight mortar rises quickly
In addition, as in the present invention, the foamable refractory paint is used as the second layer.
Is most suitable for the method of combining.
【0043】[0043]
【実施例】以上説明した本発明の構成・作用を一層明ら
かにするために、以下本発明の好適な実施例について説
明する。図1は実施例の耐火被覆構造体を示す斜視図で
あり、図2その断面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the structure and operation of the present invention described above, preferred embodiments of the present invention will be described below. FIG. 1 is a perspective view showing a fire-resistant covering structure of an embodiment, and FIG. 2 is a sectional view thereof.
【0044】図1及び図2に示す様に、本実施例の耐火
被覆構造体を形成する場合には、まず、(通常の鉄骨構
造に使用される)H形鋼の鋼材(鉄骨)1の表面に、非
発泡性耐火被覆材の例えば軽量モルタルを、例えば上述
した表1の様に、1時間耐火の場合は10mm,2時間
耐火の場合は20mm,3時間耐火の場合は25mm塗
布し、非発泡性耐火被覆材層3を形成する。そして、気
乾状態に乾燥させた後に、硬化した軽量モルタルの表面
に、例えばアクリル樹脂系の発泡性耐火塗料を、1時間
耐火の場合は1.5〜2.5mm,2時間耐火の場合は
2.0〜4.0mm,3時間耐火の場合は3.0〜5.0m
m塗布し、発泡性耐火塗料層5を形成する。これによっ
て、鋼材の表面に非発泡性耐火被覆材層と発泡性耐火塗
料層とを複合した耐火層7を形成する。As shown in FIGS. 1 and 2, when forming the fire-resistant coating structure of the present embodiment, first, a steel material (steel frame) 1 of H-section steel (used for a normal steel structure) is formed. On the surface, for example, a lightweight mortar of a non-foaming refractory coating material is applied, for example, as shown in Table 1 above, 10 mm for 1 hour fire resistance, 20 mm for 2 hours fire resistance, 25 mm for 3 hours fire resistance, The non-foamable refractory coating material layer 3 is formed. Then, after being dried in an air-dry state, an acrylic resin-based foaming refractory paint is applied to the surface of the cured lightweight mortar, for example, 1.5 to 2.5 mm for 1 hour fire resistance and 2 hours for fire resistance. 2.0-4.0mm, 3.0-5.0m for 3 hours fire resistance
m to form a foamable refractory paint layer 5. Thus, the fire-resistant layer 7 in which the non-foamable fire-resistant coating material layer and the foamable fire-resistant paint layer are combined is formed on the surface of the steel material.
【0045】この耐火層7は、非発泡性耐火被覆材単体
で形成した場合より薄膜にもかかわらず、非発泡性耐火
被覆材の表面に発泡性耐火塗料を塗布した構成となって
いるので、火災時には、最表面の発泡性耐火塗料層5が
発泡して十分な厚さの断熱層を形成して耐火性能を発揮
できる。しかも、鋼材1の表面には、高熱によっても容
易に変質しない非発泡性耐火被覆材層3が、緻密に且つ
強固に形成されているので、この非発泡性耐火被覆材層
3も十分な耐火性能を発揮し、両層3,5の機能があい
まって、如何なる場合でも、確実に且つ十分に耐火の効
果を得ることができるという顕著な特長がある。The refractory layer 7 has a structure in which a foaming refractory paint is applied to the surface of the non-foaming refractory coating material, despite the fact that the refractory layer 7 is thinner than the case where the refractory coating material is formed alone. In the event of a fire, the foamable refractory paint layer 5 on the outermost surface foams to form a heat insulating layer having a sufficient thickness, thereby exhibiting fire resistance. In addition, since the non-foamable refractory coating material layer 3 that is not easily deteriorated even by high heat is formed on the surface of the steel material 1 densely and firmly, the non-foamable refractory coating material layer 3 also has sufficient fire resistance. It has a remarkable feature that it exhibits performance and the functions of the two layers 3 and 5 are combined, and in any case, the fireproof effect can be obtained reliably and sufficiently.
【0046】更に、本実施例の耐火層7は、従来の非発
泡性耐火被覆材単体のものより薄膜であるので、空間の
有効利用ができるという効果がある。その上、発泡性耐
火塗料の表面はそれ自体化粧性がある。またその他に化
粧下塗層的に面精度が良く一般にペンキなどの塗料を塗
り易いので、例えば耐火層7の表面が目立つ場所で露出
する様な場合には、発泡性耐火塗料層5の表面をカラフ
ルにあるいは周囲になじむ様に着色することによって、
容易に美観を向上させることもできる。Further, since the refractory layer 7 of this embodiment is thinner than the conventional non-foamable refractory coating alone, there is an effect that the space can be effectively used. In addition, the surface of the foaming refractory paint itself is cosmetic. In addition, since paint such as paint is generally easy to apply with good surface accuracy as a decorative undercoat layer, for example, when the surface of the fireproof layer 7 is exposed in a conspicuous place, the surface of the foamable fireproof paint layer 5 is removed. By coloring it colorfully or around it,
The aesthetic appearance can be easily improved.
【0047】また、発泡性耐火塗料は、一旦発泡すると
脆くなってしまい、火災時に、(発泡した)断熱層に他
の部材が接触した場合には、断熱層が脱落する可能性が
あるが、本実施例では、鋼材1の表面には、非発泡性耐
火被覆材層3が緻密に且つ強固に形成されているので、
鋼材1が直接に火に晒されることを防止でき、その点で
も耐火性能の安定性や確実性を向上させることができる
という利点がある。Further, the foamable refractory paint becomes brittle once foamed, and when another member comes into contact with the (foamed) heat-insulating layer during a fire, the heat-insulating layer may fall off. In the present embodiment, since the non-foamable refractory coating material layer 3 is densely and firmly formed on the surface of the steel material 1,
It is possible to prevent the steel material 1 from being directly exposed to fire, and in this respect, there is an advantage that the stability and reliability of fire resistance performance can be improved.
【0048】また、特に、図2(b)に拡大して示す様
に、H形鋼の鋼材1の角部9に対応する非発泡性耐火被
覆材層3の出隅部11に、(半径2mm以上の)曲線状
のあるいは(長さ2mm以上の)直線状の面取りを施
し、更に、その出隅部11の表面にほぼ均一の厚さで発
泡性耐火塗料層5を形成する場合には、火災時などに、
出隅部11の発泡性耐火塗料層5の発泡源が不足して薄
くなったり、割れたり、肌分かれすることがなく、耐火
性能が一層向上するという効果がある。In particular, as shown in an enlarged manner in FIG. 2 (b), a (radius) is formed on the protruding corner 11 of the non-foamable refractory coating material layer 3 corresponding to the corner 9 of the steel material 1 of the H-section steel. In the case where a curved chamfer (of 2 mm or more) or a straight chamfer (of 2 mm or more in length) is applied and the foamable refractory paint layer 5 is formed with a substantially uniform thickness on the surface of the protruding corner portion 11, , In case of fire,
There is no foaming source of the foamable refractory paint layer 5 at the protruding corner portion 11, so that the foaming source is not thinned, cracked, or separated, and the fireproof performance is further improved.
【0049】また、例えば、図3に示す様に、角形鋼の
鋼材21の角部23に対応する非発泡性耐火被覆材層2
5の出隅部27に、上記と同様な面取りを施すことによ
って、同様に、火災時などには、出隅部27の表面を覆
う発泡性耐火塗料層29が、発泡後に割れたり肌分かれ
することがなく、耐火性能が向上するという効果が得ら
れる。For example, as shown in FIG. 3, the non-foamable refractory coating material layer 2 corresponding to the corner 23 of the square steel material 21 is formed.
By performing the same chamfering on the protruding corner 27 as described above, the foamable refractory paint layer 29 covering the surface of the protruding corner 27 breaks or breaks after foaming in the event of a fire or the like. Therefore, the effect that the fire resistance performance is improved can be obtained.
【0050】次に、本発明の効果を確認した実験例につ
いて説明する。尚、従来の発泡性耐火塗料などの発明に
記載されている耐火性能の評価においては、試験方法が
発明者によりまちまちで、試験方法によってはかなり薄
い膜厚であっても耐火性がある様に記述されているが、
実際は、建設省告示第2999号に規定する耐火試験に
準拠して試験したものの評価でなければ実用的でない。
この点、本発明者らは、実用に適合できる様に同方法で
厳格に試験し評価した。このため、本発明の比較例に示
す発泡性耐火塗料の被覆厚は、従来知られている発泡性
耐火塗料の被覆厚と比べて実用的なものとなっている。Next, an experimental example in which the effect of the present invention has been confirmed will be described. In addition, in the evaluation of the fire resistance performance described in the invention such as the conventional foaming refractory paint, the test method varies depending on the inventor. It is described,
Actually, it is not practical unless it is evaluated based on a fire resistance test specified in Ministry of Construction Notification No. 2999.
In this regard, the present inventors have conducted rigorous tests and evaluations by the same method so as to be suitable for practical use. For this reason, the coating thickness of the foaming refractory paint shown in the comparative example of the present invention is more practical than the coating thickness of the conventionally known foaming refractory paint.
【0051】<実験例1>下記表3〜7に、本実施例
(実施例1〜25)及び比較例(比較例1〜10)にお
ける、第一層(非発泡性耐火被覆材層)及び第二層(発
泡性耐火塗料層)の組成,第一層及び第二層の厚さ(被
覆厚[mm])を示すとともに、耐火性能などの実験を
行なって得た耐火層の性能を示した。尚、表中の配合を
示す数値は重量部を意味する。また、試験体の作成の際
に、軽量モルタルの使用に当たっては、水と混練した後
に塗り付けた。<Experimental Example 1> The first layer (non-foamable refractory coating material layer) and the first layer in the present example (Examples 1 to 25) and comparative examples (Comparative Examples 1 to 10) are shown in Tables 3 to 7 below. Shows the composition of the second layer (foamable fire-resistant paint layer), the thickness of the first and second layers (coating thickness [mm]), and the performance of the fire-resistant layer obtained by conducting experiments such as fire-resistance performance. Was. In addition, the numerical value which shows the combination in a table | surface means a weight part. When preparing a test body, when using a lightweight mortar, the mixture was kneaded with water and then applied.
【0052】更に、試験項目及び性能の評価は、下記の
様にした。 <試験項目と判定基準について> (1)耐火被覆施工性 1時間耐火性能の必要厚さに被覆する際の、耐火被覆施
工作業に要する作業の難易で判定した。Further, the test items and the evaluation of the performance were as follows. <Regarding Test Items and Judgment Criteria> (1) Fireproof Coating Workability Judgment was made based on the difficulty of the work required for the fireproof coating work when coating to the required thickness for 1 hour fireproof performance.
【0053】○;必要被覆をする際、ズレや垂れにより
被覆作業を制限されず、施工性が良い。 △;必要被覆をする際、ズレや垂れにより被覆作業を多
少制限され、施工性がやや悪い。○: When performing the necessary coating, the coating work is not restricted by displacement or dripping, and the workability is good. Δ: When applying the necessary coating, the coating work was somewhat restricted due to misalignment or dripping, and the workability was somewhat poor.
【0054】×;必要被覆をする際、ズレや垂れにより
被覆作業を制限され、施工性が悪い。 (2)仕上がり感 本発明の「軽量モルタル+発泡性耐火塗料」の場合は軽
量モルタルをコテ塗りした後発泡性耐火塗料を吹き付け
て仕上げ、「発泡性耐火塗料」単独の場合は発泡性耐火
塗料を吹き付けて仕上げ、それ以外の比較例の場合はコ
テ塗りまたは吹き付け後コテ押えして仕上げた後の仕上
がりの状態を目視で判断した。C: When performing the necessary coating, the coating work is restricted by displacement or dripping, and the workability is poor. (2) Finish feeling In the case of the “lightweight mortar + foamable refractory paint” of the present invention, the lightweight mortar is troweled and then sprayed with the foamable refractory paint, and when the “foamable fireproof paint” alone is used, the foamable refractory paint is used. In the case of the other comparative examples, the finished state after ironing or finishing by spraying with an iron was visually judged.
【0055】○;表面が平滑でかつ緻密で色調の均一性
があり意匠的に優れる。 △;表面が平滑ではあるが、白華などにより色ムラを生
じ意匠的にやや劣る。 ×;表面がポーラスで見苦しく、吹き付けの密度差や白
華などにより色ムラも生じ意匠的に劣る。 (3)通常環境での耐久性 鉄骨柱(H300×300×10×15mm、長さ18
00mm)に被覆した後、室内で暴露を実施して判断し
た。;: The surface is smooth and dense, the color tone is uniform and the design is excellent. Δ: Although the surface is smooth, color unevenness occurs due to white spots and the like, and the design is slightly inferior. ×: The surface is porous and unsightly, and color unevenness also occurs due to a difference in density of spraying or white spots, and the design is inferior. (3) Durability in normal environment Steel column (H300 × 300 × 10 × 15mm, length 18
(00 mm) and exposure was performed indoors to make a judgment.
【0056】○;半年の暴露で剥離や変色などの異状が
ない。 △;半年の暴露で表面的にチョーキングや白華などの変
化を生じる。 ×;半年の暴露で表面的にチョーキングや白華などの変
化を生じ、さらに部分的な剥離を生じる。 (4)通常環境での付着性 実施例、比較例に示す所定の被覆をしたものを、通常環
境の室内で1カ月間養生した後、標準状態における付着
性を、縦100×横100mmのアタッチメントを使用
して、山本扛重機社製の建研式接着力試験器(LPT−
1500)により3ヶ所測定して、平均値を下記の基準
で判定した。;: No abnormalities such as peeling or discoloration after half a year of exposure. Δ: Changes such as chalking and efflorescence appear on the surface after half a year of exposure. X: Change of chalking or white spots on the surface by exposure for half a year, and further partial peeling. (4) Adhesion in a normal environment After a predetermined coating shown in Examples and Comparative Examples was cured in a room in an ordinary environment for one month, the adhesion in a standard state was measured for an attachment having a length of 100 mm and a width of 100 mm. Using a Kenken-type adhesion tester (LPT-
1500), and the average value was determined according to the following criteria.
【0057】○;100g/cm2以上 △;50〜99g/cm2 ×;49g/cm2以下 (5)加熱後の被覆層保持性 鉄骨柱(H300×300×10×15mm、長さ18
00mm)に被覆した試験体を、建設省告示第2999
号に規定の耐火試験の加熱試験方法に準じて1時間耐火
試験を実施した後の耐火被覆材層の保持性で判断した。○: 100 g / cm 2 or more Δ: 50 to 99 g / cm 2 ×; 49 g / cm 2 or less (5) Retention of coating layer after heating Steel column (H300 × 300 × 10 × 15 mm, length 18)
00 mm), the Ministry of Construction Notification 2999
Judgment was made based on the retention of the refractory coating material layer after a one-hour refractory test was carried out according to the heating test method of the refractory test specified in the above item.
【0058】○;試験で耐火上有害とみなされる剥離や
割れなどの異状がなく良好である。 △;試験で部分的、表面的な剥離を生じ、耐火上有害に
なる可能性がある。 ×;試験で耐火上有害とみなされる剥離や割れを生じ
る。 (6)耐火性能 柱構造用H型鋼(H300×300×10×15mm、
長さ1800mm)に被覆した試験体を、建設省告示第
2999号に規定する建築構造部分の耐火試験方法の加
熱曲線に準じて1時間の加熱試験をして鋼材の21箇所
のピーク温度の平均値で判定した。;: Good without any abnormalities such as peeling or cracking which are considered to be harmful in fire resistance in the test. Δ: Partial or surface peeling may occur in the test, which may be harmful to fire resistance. X: Peeling or cracking considered to be harmful in fire resistance in the test occurs. (6) Fire resistance H-section steel for column structure (H300 × 300 × 10 × 15mm,
(1800 mm in length), the specimen was subjected to a heating test for one hour in accordance with the heating curve of the fire resistance test method for building structural parts specified in the Ministry of Construction Notification No. 2999, and the average of the peak temperatures at 21 points of the steel material was measured. Determined by value.
【0059】 ○;鋼材の21箇所の平均温度が350℃以下 △;鋼材の21箇所の平均温度が351℃〜450℃ ×;鋼材の21箇所の平均温度が451℃以上○: The average temperature of 21 steel materials is 350 ° C. or less △: The average temperature of 21 steel materials is 351 ° C. to 450 ° C. ×: The average temperature of 21 steel materials is 451 ° C. or more
【0060】[0060]
【表3】 [Table 3]
【0061】[0061]
【表4】 [Table 4]
【0062】[0062]
【表5】 [Table 5]
【0063】[0063]
【表6】 [Table 6]
【0064】[0064]
【表7】 [Table 7]
【0065】<実験例2>また、以下に、上記実施例1
〜25及び比較例1〜10以外に行った実施例26〜3
2の構成、及び上記(1)〜(6)の試験項目の実験結
果について記載した。<Experimental Example 2> The following Example 1 was used.
Examples 26 to 3 performed other than Comparative Examples 1 to 10 and Comparative Examples 1 to 10
2 and the experimental results of the test items (1) to (6) described above.
【0066】この実験例2は、軽量モルタル+発泡性耐
火塗料の組み合わせで、それらの厚みを変化させた場合
である。尚、その評価については、下記表8に記した。 (実施例26) 構成;実施例1において、第一層としての軽量モルタル
を15mmと第二層の発泡性耐火塗料の厚さを1.2m
mとの組み合せの場合。 (実施例27) 構成;実施例6において、第一層としての軽量モルタル
を15mmと第二層の発泡性耐火塗料の厚さを1.2m
mとの組み合せの場合。 (実施例28) 構成;実施例11において、第一層としての軽量モルタ
ルを15mmと第二層の発泡性耐火塗料の厚さを0.8
mmとの組み合せの場合。 (実施例29) 構成;実施例16において、第一層としての軽量モルタ
ルを15mmと第二層の発泡性耐火塗料の厚さを1.2
mmとの組み合せの場合。 (実施例30) 構成;実施例2において、第一層としての軽量モルタル
を5mmと第二層の発泡性耐火塗料の厚さを2.5mm
との組み合せの場合。 (実施例31) 構成;実施例7において、第一層としての軽量モルタル
を5mmと第二層の発泡性耐火塗料の厚さを3.0mm
との組み合せの場合。 (実施例32) 構成;実施例12において、第一層としての軽量モルタ
ルを5mmと第二層の発泡性耐火塗料の厚さを2.5m
mとの組み合せの場合。In Experimental Example 2, a combination of a lightweight mortar and a foaming refractory paint was used, and their thickness was changed. The evaluation is shown in Table 8 below. (Example 26) Structure: In Example 1, the lightweight mortar as the first layer was 15 mm, and the thickness of the foamable refractory paint as the second layer was 1.2 m.
In the case of combination with m. (Example 27) Structure: In Example 6, the lightweight mortar as the first layer was 15 mm, and the thickness of the foamable refractory paint as the second layer was 1.2 m.
In the case of combination with m. (Example 28) Structure: In Example 11, the lightweight mortar as the first layer was 15 mm, and the thickness of the foamable refractory paint of the second layer was 0.8.
In combination with mm. (Example 29) Structure: In Example 16, the lightweight mortar as the first layer was 15 mm, and the thickness of the foamable refractory paint of the second layer was 1.2.
In combination with mm. (Example 30) Configuration: In Example 2, the lightweight mortar as the first layer was 5 mm, and the thickness of the foamable refractory paint as the second layer was 2.5 mm.
In combination with (Example 31) Structure: In Example 7, the weight of the lightweight mortar as the first layer was 5 mm, and the thickness of the foamable refractory paint of the second layer was 3.0 mm.
In combination with (Example 32) Structure: In Example 12, the lightweight mortar as the first layer was 5 mm, and the thickness of the foamable refractory paint of the second layer was 2.5 m.
In the case of combination with m.
【0067】[0067]
【表8】 [Table 8]
【0068】<実験例3>また、以下に、実施例33〜
36,比較例11〜14の構成及びその実験結果につい
て記載した。この実験例3は、軽量モルタル+発泡性耐
火塗料の組み合わせで、出隅部を曲線状又は直線状に面
取りなどした場合である。尚、ここで比較例11〜14
とは、出隅部を曲線状又は直線状に面取りなどした場合
に対する比較例であり、組成及び層の厚さなどに関して
は上述した実施例の範囲である。また、その評価につい
ては、下記表9に記したが、この実験では、上記(1)
〜(6)の試験項目に加えて、下記(7)の試験項目を
加えた。 (7)加熱後の出隅部の状態 (実施例33〜36,比較例11〜14についての評
価)上記試験項目(5)の加熱後の被覆層保持性の試験
において、特に出隅部について観察し、下記の基準で評
価した。<Experimental Example 3> Further, Examples 33 to
36, the configurations of Comparative Examples 11 to 14 and the experimental results thereof were described. In Experimental Example 3, a combination of a lightweight mortar and a foaming refractory paint was used, and the corners protruding were curved or straight. Here, Comparative Examples 11 to 14
Is a comparative example with respect to a case where the protruded corner is chamfered in a curved shape or a straight shape, and the composition and the thickness of the layer are in the range of the above-described example. The results of the evaluation are shown in Table 9 below.
In addition to the test items (1) to (6), the following test item (7) was added. (7) State of Outer Corner after Heating (Evaluation of Examples 33 to 36 and Comparative Examples 11 to 14) In the above test item (5), in the test of coating layer retention after heating, in particular, about the outer corner. It was observed and evaluated according to the following criteria.
【0069】○;出隅部も平坦部と同様にほぼ均一な発
泡であり、肌分かれや剥離の異常がない。 △;出隅部に多少の肌分かれを生じる。 ×;出隅部に肌分かれや剥離の異常を生じる。 (実施例33) 構成;実施例1において、第一層としての軽量モルタル
を10mmとし、出隅部を2mmの曲線状にした後、第
二層の発泡性耐火塗料の厚さを2.0mmで仕上げた場
合。 (実施例34) 構成;実施例6において、第一層としての軽量モルタル
を10mmとし、出隅部を2mmの曲線状にした後、第
二層の発泡性耐火塗料の厚さを2.0mmで仕上げた場
合。 (実施例35) 構成;実施例6において、第一層としての軽量モルタル
を10mmとし、出隅部を2mmの直線状に面取りをし
た後、第二層の発泡性耐火塗料の厚さを2.0mmで仕
上げた場合。 (実施例36) 構成;実施例11において、第一層としての軽量モルタ
ルを10mmとし、出隅部を2mmの直線状に面取りを
した後、第二層の発泡性耐火塗料の厚さを1.5mmで
仕上げた場合。 (比較例11) 構成;実施例1において、第一層としての軽量モルタル
を10mmとし、出隅部を直角にした後、第二層の発泡
性耐火塗料の厚さを2.0mmで仕上げた場合の出隅部
についての評価を加えたもの。 (比較例12) 構成;実施例11において、第一層としての軽量モルタ
ルを10mmとし、出隅部を直角にした後、第二層の発
泡性耐火塗料の厚さを1.5mmで仕上げた場合の出隅
部についての評価を加えたもの。 (比較例13) 構成;比較例2において、発泡性耐火塗料の厚さを5.
0mmで仕上げた場合の出隅部についての評価を加えた
もの。 (比較例14) 構成;比較例6において、発泡性耐火塗料の厚さを5.
0mmで仕上げた場合の出隅部についての評価を加えた
もの。;: Outer corners are almost uniformly foamed like the flat portions, and there is no abnormality in skin separation and peeling. Δ: Some skin separation occurs at the protruding corner. ×: Abnormality of skin separation or peeling occurs at the protruding corner. (Example 33) Structure: In Example 1, the lightweight mortar as the first layer was set to 10 mm, and the protruding corner portion was curved to 2 mm, and then the thickness of the foamable refractory paint of the second layer was set to 2.0 mm. When finished with. (Example 34) Structure: In Example 6, the lightweight mortar as the first layer was set to 10 mm, and the protruding corner portion was curved to 2 mm, and then the thickness of the foamable refractory paint of the second layer was set to 2.0 mm. When finished with. (Example 35) Configuration: In Example 6, the light-weight mortar as the first layer was set to 10 mm, and the corners were straight-chamfered to 2 mm, and then the thickness of the foamable refractory paint of the second layer was adjusted to 2 mm. When finished with 0.0 mm. (Example 36) Structure: In Example 11, after the light-weight mortar as the first layer was 10 mm, the corners were straight-chamfered to 2 mm, and the thickness of the foamable refractory paint of the second layer was 1 mm. When finished with .5mm. (Comparative Example 11) Configuration: In Example 1, the light-weight mortar as the first layer was 10 mm, and the protruding corner portion was made a right angle. Then, the thickness of the foamable refractory paint of the second layer was finished at 2.0 mm. In addition to the evaluation of the corner in the case. (Comparative Example 12) Structure: In Example 11, the light-weight mortar as the first layer was set to 10 mm, and the protruding corner portion was set to a right angle. Then, the thickness of the foamable refractory paint of the second layer was finished to 1.5 mm. In addition to the evaluation of the corner in the case. (Comparative Example 13) Configuration: In Comparative Example 2, the thickness of the foamable refractory paint was set to 5.
Evaluation of the protruding corner when finished with 0 mm. (Comparative Example 14) Configuration: In Comparative Example 6, the thickness of the foamable refractory paint was set to 5.
Evaluation of the protruding corner when finished with 0 mm.
【0070】[0070]
【表9】 [Table 9]
【0071】<実験例4>また、以下に、実施例37〜
38,比較例15〜16の構成及びその実験結果につい
て記載した。尚、その評価については、下記表10に記
載した。この実験例4は、軽量モルタル+発泡性耐火塗
料の組み合わせで、実験例1に示す試験項目(1)〜
(6)項のうち、(1)〜(4)項は実験例1に準じて
同様に行ない、(5)項,(6)項の耐火試験によるも
のは同法に基づき2時間の加熱試験をして、(5)項に
ついては試験した後の被覆層の保持性を評価し、(6)
項については鋼材温度のピーク値の平均温度を評価した
ものである。尚、評価基準は実験例1と同じである。 (実施例37) 構成;実施例1において、第一層としての軽量モルタル
を20mmとし、第二層の発泡性耐火塗料の厚さを3.
0mmで仕上げた場合。 (実施例38) 構成;実施例11において、第一層としての軽量モルタ
ルを20mmとし、第二層の発泡性耐火塗料の厚さを
2.5mmで仕上げた場合。 (比較例15) 構成;比較例2において、発泡性耐火塗料の厚さを7.
0mmで仕上げた場合。 (比較例16) 構成;比較例6において、発泡性耐火塗料の厚さを7.
0mmで仕上げた場合。<Experimental Example 4> Further, Examples 37 to
38, the configurations of Comparative Examples 15 and 16 and the experimental results thereof were described. The evaluation is shown in Table 10 below. Test Example 4 is a combination of a lightweight mortar and a foaming refractory paint.
Of the items (6), the items (1) to (4) are performed in the same manner as in Experimental Example 1, and the refractory tests of the items (5) and (6) are performed for 2 hours based on the same method. Then, regarding the item (5), the retention of the coating layer after the test was evaluated, and (6)
The term is obtained by evaluating the average temperature of the peak value of the steel material temperature. The evaluation criteria are the same as in Experimental Example 1. (Example 37) Structure: In Example 1, the lightweight mortar as the first layer was 20 mm, and the thickness of the foamable refractory paint of the second layer was 3.
When finished with 0mm. (Example 38) Configuration: In the case of Example 11, the lightweight mortar as the first layer was 20 mm, and the thickness of the foamable refractory paint of the second layer was 2.5 mm. (Comparative Example 15) Structure: In Comparative Example 2, the thickness of the foamable refractory paint was 7.
When finished with 0mm. (Comparative Example 16) Structure: In Comparative Example 6, the thickness of the foamable refractory paint was 7.
When finished with 0mm.
【0072】[0072]
【表10】 [Table 10]
【0073】<実験例5>また、以下に、実施例39〜
40,比較例17〜18の構成及びその実験結果につい
て記載した。尚、その評価については、下記表11に記
載した。この実験例5は、軽量モルタル+発泡性耐火塗
料の組み合わせで、実験例1に示す試験項目(1)〜
(6)項のうち、(1)〜(4)項は実験例1に準じて
同様に行ない、(5)項,(6)項の耐火試験によるも
のは同法に基づき3時間の加熱試験をして、(5)項に
ついては試験した後の被覆層の保持性を評価し、(6)
項については鋼材温度のピーク値の平均温度を評価した
ものである。尚、評価基準は実験例1と同じである。 (実施例39) 構成;実施例1において、第一層としての軽量モルタル
を25mmとし、第二層の発泡性耐火塗料の厚さを4.
5mmで仕上げた場合。 (実施例40) 構成;実施例11において、第一層としての軽量モルタ
ルを20mmとし、第二層の発泡性耐火塗料の厚さを
4.5mmで仕上げた場合。 (比較例17) 構成;比較例2において、発泡性耐火塗料の厚さを1
0.0mmで仕上げた場合。 (比較例18) 構成;比較例6において、発泡性耐火塗料の厚さを1
0.0mmで仕上げた場合。<Experimental Example 5> Further, Examples 39 to
40, Comparative Examples 17 to 18 and the experimental results thereof were described. The evaluation is shown in Table 11 below. Test Example 5 is a combination of a lightweight mortar and a foaming refractory paint.
Of the items (6), items (1) to (4) are performed in the same manner as in Experimental Example 1, and those obtained by the fire resistance tests of items (5) and (6) are subjected to a 3-hour heating test based on the same method. Then, regarding the item (5), the retention of the coating layer after the test was evaluated, and (6)
The term is obtained by evaluating the average temperature of the peak value of the steel material temperature. The evaluation criteria are the same as in Experimental Example 1. (Example 39) Structure: In Example 1, the lightweight mortar as the first layer was 25 mm, and the thickness of the foamable refractory paint of the second layer was 4.
When finished with 5mm. (Example 40) Configuration: In the case of Example 11, the lightweight mortar as the first layer was 20 mm, and the thickness of the foamable refractory paint of the second layer was 4.5 mm. (Comparative Example 17) Structure: In Comparative Example 2, the thickness of the foamable refractory paint was 1
When finished with 0.0mm. (Comparative Example 18) Configuration: In Comparative Example 6, the thickness of the foamable refractory paint was 1
When finished with 0.0mm.
【0074】[0074]
【表11】 [Table 11]
【0075】<実験例6>また、以下に、実施例41〜
42,比較例19〜20の構成及びその実験結果につい
て記載した。尚、その評価については、下記表12に記
載した。この実験例6は、請求項6の発明について説明
したもので、試験項目と方法と評価については、実験例
1の(1)〜(6)の試験項目に加えて、下記(8)の
試験項目を加えた。<Experimental Example 6> In addition, Examples 41 to
42, the configurations of Comparative Examples 19 to 20 and the experimental results thereof were described. The evaluation is shown in Table 12 below. This experimental example 6 describes the invention of claim 6. The test items, methods and evaluations are the same as those of the experimental examples 1 (1) to (6), and the following test (8). Item added.
【0076】(8)通常環境での仲介的接着性 所定の要領により鉄板に被覆したものを、通常環境の室
内で1カ月間養生した後、図4に示す様に、測定部分に
切り込みを入れて、標準状態における仲介的接着性を縦
70×横70mmのアタッチメントを使用して、山本扛
重機社製の建研式接着力試験器(LPT−1500)に
より3ヶ所測定して、平均値を示した。 (実施例41)実施例1において軽量モルタルを9.5
mm塗装した後に、気乾状態にし、下記の組成の中塗り
塗料1を0.5mm仲介的に塗装し、その乾燥後、更に
実施例1の発泡性耐火塗料を2.0mm塗装し養生した
ものを、前述した実験例と同様の試験をしてその性能を
評価した。(8) Intermediate Adhesion in Normal Environment After the steel plate coated in a predetermined manner was cured in a room in a normal environment for one month, a cut was made in the measurement portion as shown in FIG. Then, the intermediate adhesiveness in the standard state was measured at three locations using a Kenken-type adhesive strength tester (LPT-1500) manufactured by Yamamoto Hoikiki Co., Ltd. using an attachment of 70 × 70 mm, and the average value was measured. Indicated. (Example 41) The light weight mortar of Example 1 was replaced with 9.5.
mm, and then air-dried. Intermediate coating 1 of the following composition was applied by 0.5 mm intervening. After drying, the foamable refractory coating of Example 1 was further applied and cured by 2.0 mm. Was subjected to the same test as in the above-described experimental example to evaluate its performance.
【0077】 中塗り塗料1 (重量%) 結合剤A ;三井東圧化学社製 アルマテックスZ115 30.0 水 ; 17.3 溶剤 ;ブチルカルビトールアセテート 2.0 二酸化チタン ;石原産業社製 タイペークR−820 10.0 炭酸カルシウム;備北粉化工業社製 ソフロン100 40.0 分散剤 ;サンノプコ社製 ノプコサントK 0.2 湿潤剤 ;サンノプコ社製 ノプコウエット50 0.2 消泡剤 ;サンノプコ社製 ノプコ8034L 0.1 増粘剤 ;信越化学工業社製 メトローズSM1500 0.2 (実施例42)実施例17において軽量モルタルを9.
0mm塗装した後に、気乾状態にし、下記の組成の中塗
り塗料2を1.0mm仲介的に塗装し、その乾燥後、更
に実施例17の発泡性耐火塗料を2.0mm塗装し養生
したものを、前述した実験例と同様の試験をしてその性
能を評価した。Intermediate paint 1 (% by weight) Binder A; Almatex Z115 30.0 water, manufactured by Mitsui Toatsu Chemicals, Inc. 17.3 Solvent: butyl carbitol acetate 2.0 titanium dioxide; Ishihara Sangyo Co., Ltd. -820 10.0 Calcium carbonate; Sohlon 100 40.0 dispersant manufactured by Bihoku Powder Chemical Industry Co., Ltd .; Nopco Santo K 0.2 wetting agent manufactured by San Nopco Co., Ltd .; Nopco Wet 50 0.2 manufactured by San Nopco Co., Ltd .; 8034L 0.1 thickener; Metroose SM 1500 0.2 manufactured by Shin-Etsu Chemical Co., Ltd. (Example 42)
After painting 0 mm, it was air-dried, intermediate coating 2 having the following composition was applied 1.0 mm intervening, and after drying, the foamable refractory paint of Example 17 was further painted 2.0 mm and cured. Was subjected to the same test as in the above-described experimental example to evaluate its performance.
【0078】 中塗り塗料2 (重量%) 結合剤A ;三井東圧化学社製 アルマテックスZ115 20.0 結合剤B ;日本セメント社製 アサノホワイトセメント 40.0 シラスバルーン;三機工業社製 サンキライトB03 10.0 炭素繊維 ;三菱化成社製 ダイアリード繊維長3mm品 1.0 水 ; 28.3 分散剤 ;サンノプコ社製 ノプコサントK 0.2 湿潤剤 ;サンノプコ社製 ノプコウエット50 0.2 消泡剤 ;サンノプコ社製 ノプコ8034L 0.1 増粘剤 ;信越化学工業社製 メトローズSM1500 0.2 (比較例19)実施例1の組み合せについて、試験項目
の(8)のみを追加して、非発泡性耐火被覆材層と発泡
性耐火塗料層の境界面の評価をした。 (比較例20)実施例17の組み合せについて、試験項
目の(8)のみを追加して、非発泡性耐火被覆材層と発
泡性耐火塗料層の境界面の評価をした。Intermediate paint 2 (% by weight) Binder A; Almatex Z115 20.0 manufactured by Mitsui Toatsu Chemicals Binder B; Asano White Cement 40.0 Shirasu balloon manufactured by Nippon Cement Co., Ltd. Sanki manufactured by Sanki Kogyo Light B03 10.0 Carbon fiber; Dialead fiber length 3 mm, manufactured by Mitsubishi Kasei Co., Ltd. 1.0 Water; 28.3 Dispersant; Sannopco's Nopco Santo K 0.2 Wetting agent; Sannopco's Nopco Wet 50 0.2 Foaming agent: Nopco 8034L 0.1 manufactured by San Nopco Co., Ltd. Thickener: Metrolose SM 1500 0.2 manufactured by Shin-Etsu Chemical Co., Ltd. (Comparative Example 19) For the combination of Example 1, only the test item (8) was added, The interface between the foaming refractory coating material layer and the foaming refractory paint layer was evaluated. (Comparative Example 20) With respect to the combination of Example 17, only the test item (8) was added, and the interface between the non-foamable fireproof coating material layer and the foamable fireproof paint layer was evaluated.
【0079】[0079]
【表12】 [Table 12]
【0080】ここで、上記実験に使用した材料について
詳しく述べる。 <使用原料> ポルトランドセメント ;日本セメント社製 普通ポル
トランドセメント 再乳化形樹脂 ;ヘキスト合成社製 モビニー
ルDM−200 パーライト ;三井金属鉱業社製 三井パー
ライトC 焼成ひる石 ;日宝蛭石社製 ヒルコン2号 ドロマイトプラスター ;JIS A 6903 上塗
用適合品 炭酸カルシウム ;備北粉化工業社製 ソフロン
1000 メチルセルロース ;信越化学工業社製 メトロー
ズSM1500 耐アルカリ性ガラス繊維;日東紡績社製 CSV13P
B800 発泡スチロール粒 ;平均粒径1.2mm、かさ比
重0.067 シラスバルーン ;三機工業社製 サンキライト
B03 水酸化アルミニウム ;昭和電工社製 ハイジライト
H−10 ベントナイト ;クニミネ工業社製 クニゲル
VS 炭素繊維 ;三菱化成社製 ダイアリード
K661 繊維長10mm 硅砂 ;硅砂6号 樹脂結合剤1 ;アクリル樹脂エマルションに
よる結合成分;ヘキスト合成社製モビニール747によ
る樹脂固形成分 樹脂結合剤2 ;ポリオール混合物とイソシア
ネートによる結合成分;伊東製油社製のヒマシ油を72
重量部と旭電化社製のアデカレジン6060を19重量
部と3,3’−ジクロロ4,4’−ジアミノフェニルメ
タンを8重量部と4,4’−メチレンジアニリンを1重
量部の混合物に三井東圧化学社製のイソシアネートCR
200を使用して、ポリオール混合物とイソシアネート
の使用比率はポリオール混合物の水酸基とアミノ基の合
計モル数に対するイソシアネート基の合計モル数の比が
1になるように選んだ樹脂固形成分 樹脂結合剤3 ;エポキシ樹脂とその硬化剤に
よる結合成分;カネボウエヌエスシー社製エポルション
EA1を100重量部に同社製エポルションEB1を8
0重量部の割合で使用した結合剤による樹脂固形成分 樹脂結合剤4 ;塩化ビニル酢酸ビニル共重合
樹脂エマルションによる結合成分;ヘキスト合成社製モ
ビール190Eによる樹脂固形成分 樹脂結合剤5 ;塩ゴム樹脂による結合成分;
旭電化社製アデカ塩化ゴム樹脂CR−5を60重量部に
可塑剤として塩素パラ70を40重量部の割合で使用し
た結合剤による樹脂固形成分 メラミン樹脂粉末 ;三井東圧化学社製 メルマイ
ト粉末 膨張黒鉛 ;中越黒鉛工業社製 膨張黒鉛
SMF リン化合物 ;ヘキストジャパン社製 EX
OLIT462(マイクロカプセル化ポリリン酸アンモ
ニウム) 偏平マイカ微粉末 ;クラレ社製 スゾライトマイ
カ200S 粒状水ガラス ;Na2O:SiO2=1:3.
9(モル比)の組成の粒状水ガラス(粒径0.8mm)
をステアリン酸カルシウムで耐水化処理したもの ガラス繊維 ;日東紡績社製 ガラス繊維長
さ3mm品 炭化ケイ素微粉末 ;東海カーボン社製 炭化ケイ
素微粉末 チタン白 ;石原産業社製 タイペークR
−820 シラス粉末 ;イヂチ化成社製 シラス粉末
200メッシュ品 真珠岩粉末 ;三井金属工業社製 真珠岩粉
砕200メッシュ品 上述した実験例から明かな様に、本実施例のものは、被
覆施工性,仕上がり感,通常環境での耐久性,通常環境
での付着性,加熱後の被覆層保持性及び耐火性能の全て
に優れた性能を有しており好適である。特に、出隅部に
曲線状又は直線状に面取りを施したものは、加熱後の出
隅部の状態が優れおり、一層好適である。それに対して
比較例のものは、全ての点で優れたものはなく、必ずし
も好ましくない。尚、上記比較例11〜12は、出隅部
に曲線状又は直線状に面取りを施したものに対する比較
例であるので、全般的な耐火性能は優れている。また、
中塗り塗料層を有するものは、接着性に優れていること
は明らかである。Here, the materials used in the above experiment will be described in detail. <Raw materials> Portland cement; Nippon Cement Co., Ltd. ordinary Portland cement re-emulsifiable resin; Hoechst Gosei Co., Ltd. Movinyl DM-200 perlite; Mitsui Mining & Smelting Co., Ltd. Mitsui Perlite C; Dolomite plaster; JIS A 6903 Compatible product for overcoating Calcium carbonate; Soflon 1000 methylcellulose manufactured by Bihoku Kagaku Kogyo; Metrolose SM1500 manufactured by Shin-Etsu Chemical Co., Ltd. Alkali-resistant glass fiber; Nitto Boseki CSV13P
B800 Styrofoam particles; average particle size: 1.2 mm; bulk specific gravity: 0.067 Shirasu balloon; Sankilite B03 aluminum hydroxide manufactured by Sanki Kogyo; Heidilite H-10 bentonite manufactured by Showa Denko; Kunigel VS carbon fiber manufactured by Kunimine Kogyo Dialead K661 manufactured by Mitsubishi Kasei Co., Ltd. fiber length 10 mm silica sand; silica sand No. 6 resin binder 1: binding component by acrylic resin emulsion; resin solid component by Movinyl 747 manufactured by Hoechst Gosei Co., Ltd. resin binder 2: binding component by polyol mixture and isocyanate Castor oil from Ito Oil 72
A mixture of 19 parts by weight of Adeka Resin 6060 manufactured by Asahi Denka Co., 8 parts by weight of 3,3'-dichloro4,4'-diaminophenylmethane and 1 part by weight of 4,4'-methylenedianiline was added to Mitsui. Isocyanate CR manufactured by Toatsu Chemical
Using 200, the ratio of the polyol mixture to the isocyanate was selected such that the ratio of the total number of moles of isocyanate groups to the total number of moles of hydroxyl groups and amino groups of the polyol mixture was 1, resin solid component resin binder 3; Epoxy resin and its hardener-binding component; 100 parts by weight of Easion EA1 manufactured by Kanebo Wen S.C.
Resin solid component by binder used in a ratio of 0 parts by weight Resin binder 4: Binding component by vinyl chloride / vinyl acetate copolymer resin emulsion; Resin solid component by Mobile 190E manufactured by Hoechst Gosei Co., Ltd. Resin binder 5: By salt rubber resin Binding component;
Resin solid component by binder using Asahi Denka Co., Ltd. ADEKA chlorinated rubber resin CR-5 at 60 parts by weight and chlorine para 70 at a ratio of 40 parts by weight as a plasticizer Melamine resin powder; Melt powder from Mitsui Toatsu Chemicals Graphite: Expanded graphite SMF phosphorus compound manufactured by Chuetsu Graphite Industries, Ltd. EX manufactured by Hoechst Japan
OLIT462 (microencapsulated ammonium polyphosphate) Flat mica fine powder; Szolite mica 200S manufactured by Kuraray Granular water glass; Na 2 O: SiO 2 = 1: 3.
Granular water glass having a composition of 9 (molar ratio) (particle diameter 0.8 mm)
Glass fiber; glass fiber length 3 mm, manufactured by Nitto Boseki Co., Ltd. Silicon carbide fine powder; silicon carbide fine powder, manufactured by Tokai Carbon Co., Ltd. Titanium white; Ishihara Sangyo Co., Ltd.
-820 Shirasu powder: 200 mesh product of Shirasu powder manufactured by Ichi Kasei Co., Ltd. Pearl powder: 200 mesh product of pearlite crushed by Mitsui Kinzoku Kogyo Co., Ltd. It has excellent performance in finish feeling, durability in a normal environment, adhesion in a normal environment, coating layer retention after heating, and fire resistance. In particular, those in which the corners are chamfered in a curved or straight line are excellent in the state of the corners after heating, and are more preferable. On the other hand, the comparative example is not preferable in all respects, and is not always preferable. In addition, since the said comparative examples 11-12 are comparative examples with respect to the thing which chamfered the curved corner or the straight line at the protruded corner part, the overall fire resistance performance is excellent. Also,
It is clear that those having the intermediate coating layer have excellent adhesiveness.
【0081】以上本発明の一実施例を説明したが、本発
明はこれに限定されず、本発明の要旨を逸脱しない範囲
内の種々なる態様を採用することができる。Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various embodiments can be adopted without departing from the gist of the present invention.
【0082】上記詳述した様に、請求項1の発明によれ
ば、基本構造体の表面側に塗布により形成された非発泡
性耐火被覆材層を備えるとともに、非発泡性耐火被覆材
層の表面側に塗布により形成された発泡性耐火塗料層を
備えているので、耐火性能を十分に確保した上で、両層
からなる耐火層の厚さを薄くすることができる。これ
は、単に非発泡性耐火被覆材層と発泡性耐火塗料層とを
組み合わせた以上の相乗的効果を発揮する。また、表面
化粧性を兼備でき経済的にも有利である。しかも、本発
明によれば、非発泡性耐火被覆材が複合軽量骨材混入モ
ルタルであり、その成分中に有機質発泡体粉末又は粒を
含む組成であるので、施工時においてその水・セメント
比を小さくでき、一度に40mm厚程度まで厚く吹き付
けできるというメリットの他、軽量モルタルの強度の立
ち上がりが早いという特性も加わり、本発明の様に、第
二層として発泡性耐火塗料を組み合わせた構造体には最
も好適なものである。 As described in detail above, according to the first aspect of the present invention, the non-foamable refractory coating material layer formed by coating is provided on the surface side of the basic structure. Since the foamable refractory paint layer formed by application is provided on the front surface side, the thickness of the refractory layer comprising both layers can be reduced while ensuring sufficient fireproof performance. This exerts a synergistic effect more than simply combining the non-foamable refractory coating material layer and the foamable refractory paint layer. In addition, it is economically advantageous because it has both surface cosmetic properties. Moreover, the original
According to Ming, non-foamable refractory coatings are
Lutar, which contains organic foam powder or granules in its components.
Since it is a composition that contains
The ratio can be reduced and sprayed to a thickness of about 40mm at a time.
In addition to the advantage that it can be
In addition to the quick rise characteristics, as in the present invention,
For structures that combine foamable fire-resistant paint as two layers,
Are also suitable.
【0083】請求項2の発明では、柱又は梁の鉄骨の構
造体の表面に、非発泡性耐火被覆材層及び発泡性耐火塗
料層を設けるので、両層からなる耐火層を薄くできるに
もかかわらず、鉄骨に対する耐火性能が向上する。請求
項3の発明では、壁又は床の一部に鉄を含む基本構造体
の表面に、非発泡性耐火被覆材層及び発泡性耐火塗料層
を設けるので、両層からなる耐火層を薄くできるにもか
かわらず、壁又は床に対する耐火性能が向上する。According to the second aspect of the present invention, since the non-foamable fire-resistant coating material layer and the foamable fire-resistant paint layer are provided on the surface of the steel structure of the column or the beam, the fire-resistant layer comprising both layers can be made thin. Regardless, the fire resistance performance against steel frames is improved. According to the third aspect of the present invention, since the non-foamable refractory coating material layer and the foamable refractory paint layer are provided on the surface of the basic structure including iron on a part of the wall or floor, the refractory layer composed of both layers can be thinned. Nevertheless, the fire resistance performance on the wall or floor is improved.
【0084】[0084]
【0085】[0085]
【0086】請求項4の発明によれば、主に非発泡性耐
火被覆材層に対し発泡性耐火塗料を施工する際の吸い込
みムラ防止や、上塗りとなる発泡性耐火塗料の結合剤が
アルカリに弱いアルキッド系樹脂などを使用した場合の
アルカリの移行防止や、非発泡性耐火被覆材層に対する
発泡性耐火塗料の接着性を改善する効果がある。According to the fourth aspect of the present invention, it is possible to prevent suction unevenness when applying the foaming refractory paint to the non-foaming refractory coating material layer, and to make the binder of the foaming refractory paint to be an overcoat alkaline. This has the effect of preventing the migration of alkali when a weak alkyd-based resin or the like is used, and improving the adhesiveness of the foamable fire-resistant paint to the non-foamable fire-resistant coating material layer.
【0087】請求項5又は6の発明によれば、非発泡性
耐火被覆材層の出隅部に対して、曲線状又は直線状に面
取りを施し、中塗り塗料層を介し又は介さずして、この
出隅部の表面に発泡性耐火塗料層をほぼ均一の厚さに形
成するので、火災時などには、出隅部の発泡性耐火塗料
の発泡源が不足して薄くなったり、割れたり、肌分かれ
しすることがなく、確実に耐火性能を発揮できる。According to the fifth or sixth aspect of the present invention, the protruding corner of the non-foamable refractory coating material is chamfered in a curved or straight line, with or without the intermediate coating layer. Since the foamable refractory paint layer is formed to a substantially uniform thickness on the surface of the protruding corner, in the event of a fire, the foaming source of the foamable refractory paint on the protruding corner becomes insufficient and becomes thin or cracked. No fire or skin splitting, it can reliably demonstrate fire resistance.
【0088】請求項7の発明では、基本構造体の表面側
を、非発泡性耐火被覆材を塗布して覆った後に、中塗り
塗料層を介し又は介さずして、この非発泡性耐火被覆材
の表面側を、発泡性耐火塗料を塗布して覆うので、両層
からなる耐火層を極めて簡単な作業で容易に形成できる
ことになる。また、新たな化粧塗装を省略できる。しか
も、本発明によれば、非発泡性耐火被覆材が複合軽量骨
材混入モルタルであり、その成分中に有機質発泡体粉末
又は粒を含む組成であるので、施工時においてその水・
セメント比を小さくでき、一度に40mm厚程度まで厚
く吹き付けできるというメリットの他、軽量モルタルの
強度の立ち上がりが早いという特性も加わり、本発明の
様に、第二層として発泡性耐火塗料を組み合わせた工法
には最も好適なものである。 According to the invention of claim 7 , after the surface side of the basic structure is coated with a non-foamable refractory coating material, the non-foamable refractory coating material is applied with or without an intermediate coating layer. Since the surface side of the material is coated with the foaming refractory paint, the refractory layer composed of both layers can be easily formed by an extremely simple operation. Further, a new cosmetic coating can be omitted. Only
According to the present invention, the non-foamable refractory coating material is a composite lightweight bone.
Mortar mixed with organic foam powder
Or, because it is a composition containing grains, the water
The cement ratio can be reduced, and the thickness can be reduced to about 40 mm at a time.
In addition to the advantage that it can be sprayed well, lightweight mortar
In addition to the characteristic that the rise of strength is fast,
, A method combining a foamable refractory paint as the second layer
Is the most suitable.
【図1】 本発明の実施例の耐火被覆構造体を示す斜視
図である。FIG. 1 is a perspective view showing a fireproof covering structure according to an embodiment of the present invention.
【図2】 H形鋼の耐火被覆構造体を示し、(a)はそ
の断面図、(b)はその一部を拡大して示す断面図であ
る。FIGS. 2A and 2B show a fire-resistant coated structure of an H-section steel, in which FIG. 2A is a cross-sectional view and FIG.
【図3】 角形鋼の耐火被覆構造体を示す断面図であ
る。FIG. 3 is a cross-sectional view showing a refractory coating structure of square steel.
【図4】 接着性の測定方法を示す説明図である。FIG. 4 is an explanatory diagram showing a method for measuring adhesiveness.
1,21…鋼材 3,25…非発泡性
耐火被覆材層 5,29…発泡性耐火塗料層 7…耐火層 9,23…角部 11,27…出隅部1,21 ... Steel material 3,25 ... Non-foamable fireproof coating material layer 5,29 ... Foamable fireproof paint layer 7 ... Fireproof layer 9,23 ... Corner portion 11,27 ... Outer corner portion
───────────────────────────────────────────────────── フロントページの続き (73)特許権者 592067395 日本化成株式会社 東京都新宿区西新宿六丁目5番1号 (73)特許権者 394003667 日本プラスター株式会社 栃木県安蘇郡葛生町宮下町七番八号 (73)特許権者 390025612 富士川建材工業株式会社 神奈川県横浜市金沢区鳥浜町13番地 (73)特許権者 000174932 三井金属塗料化学株式会社 東京都中央区日本橋室町2丁目1番1号 (72)発明者 高尾 善博 千葉県佐倉市大作二丁目4番2号 株式 会社小野田 開発研究所内 (72)発明者 井上 照郷 東京都大田区北桃谷一丁目9番13号 恒 和化学工業株式会社 技術研究所内 (72)発明者 時本 徳寿 岐阜県各務原市松本町二丁目457番地 菊水化学工業株式会社 技術開発部内 (72)発明者 矢田 武美 三重県四日市市塩浜町一番地 スズカフ ァイン株式会社 技術本部内 (72)発明者 森脇 貴志 埼玉県比企郡滑川町大字都25番11号 日 本化成株式会社 中央研究所内 (72)発明者 奥山 國之 栃木県安蘇郡葛生町宮下町七番8号 日 本プラスター株式会社内 (72)発明者 原田 進 神奈川県横浜市金沢区鳥浜町13番地 富 士川建材工業株式会社 技術部内 (72)発明者 田畑 公三 千葉県舟橋市西浦三丁目7番1号 三井 金属塗料化学株式会社 技術本部内 (56)参考文献 特開 平1−260139(JP,A) 実公 平3−19558(JP,Y2) (58)調査した分野(Int.Cl.6,DB名) E04B 1/94 ──────────────────────────────────────────────────続 き Continuing from the front page (73) Patent holder 592067395 Nippon Kasei Co., Ltd. 6-5-1, Nishishinjuku, Shinjuku-ku, Tokyo (73) Patent holder 394003667 Nippon Plaster Co., Ltd. Miyashita-cho, Kuzuu-cho, Anso-gun, Tochigi Prefecture Banpachi (73) Patent holder 390025612 Fujikawa Building Materials Co., Ltd. 13 Torihama-cho, Kanazawa-ku, Yokohama-shi, Kanagawa (73) Patent holder 000174932 Mitsui Kinzoku Paint Chemical Co., Ltd. 2-1-1 Nihonbashi Muromachi, Chuo-ku, Tokyo (72) Inventor Yoshihiro Takao 2-4-2 Daisaku, Sakura City, Chiba Prefecture Inside the Onoda Development Laboratory Co., Ltd. (72) Inventor Terugo Inoue 1-9-13 Kita-Motani, Ota-ku, Tokyo Tsunewa Chemical Industry Co., Ltd. Within the Technology Research Institute (72) Inventor Tokuhisa Tokimoto 2-457 Matsumotocho, Kakamigahara-shi, Gifu Prefecture Kikusui Chemical Industry Co., Ltd. (72) Inventor Takemi Yada Ichiban-cho, Yokkaichi-shi, Mie Pref., Suzuka Fine Co., Ltd.Technical headquarters (72) Inventor Takashi Moriwaki 25-11, Oji-machi, Namerikawa-cho, Hiki-gun, Saitama Prefecture Nihon Kasei Co., Ltd. 72) Inventor Kuniyuki Okuyama 7-8 Miyashita-cho, Kuzuu-cho, Anso-gun, Tochigi Japan Within Plaster Co., Ltd. (72) Inventor Susumu Harada 13 Torihama-cho, Kanazawa-ku, Yokohama-shi, Kanagawa Prefecture (72) Inventor Kozo Tabata 3-7-1 Nishiura Nishiura, Funabashi-shi, Chiba Mitsui Kinzoku-Paint Chemicals Co., Ltd. (56) References JP-A-1-260139 (JP, A) 19558 (JP, Y2) (58) Field surveyed (Int. Cl. 6 , DB name) E04B 1/94
Claims (7)
と、該基本構造体の表面側に塗布により形成された非発
泡性耐火被覆材層と、該非発泡性耐火被覆材層の表面側
に塗布により形成された発泡性耐火塗料層と、を備える
とともに、 上記非発泡性耐火被覆材が、複合軽量骨材混入モルタル
であり、その成分中に有機質発泡体粉末又は粒を含むこ
と を特徴とするハイブリッド耐火被覆構造体。たことを
特徴とするハイブリッド耐火被覆構造体。1. A basic structure using iron partially or entirely, a non-foamable fire-resistant coating material layer formed by coating on the surface side of the basic structure, and a surface of the non-foamable fire-resistant coating material layer obtain Bei and a foamable fire-resistant coating layer formed by coating on the side
In addition, the non-foamable fire-resistant coating material
Containing organic foam powder or granules in its components.
And a hybrid fire-resistant coating structure. A hybrid fire-resistant coating structure.
ることを特徴とする上記請求項1記載のハイブリッド耐
火被覆構造体。2. The hybrid fire-resistant covering structure according to claim 1, wherein said basic structure is a steel column or beam.
は床であることを特徴とする上記請求項1記載のハイブ
リッド耐火被覆構造体。3. The hybrid fire-resistant covering structure according to claim 1, wherein the basic structure is a wall or a floor partially containing iron.
層と発泡性耐火塗料層との中間に仲介的に中塗り塗料層
を有することを特徴とする上記請求項1ないし3のいず
れか記載のハイブリッド耐火被覆構造体。 Wherein said base structure is, any non-foaming fireproofing material layer and foamable to not above claim 1, characterized in that it has a middle intermediary to intermediate coating layer of refractory coating layer 3 The hybrid fire-resistant coating structure according to any one of the above.
火被覆材層の出隅部に対して、曲線状に面取りを施し、
該面取りを施した出隅部の表面に、上記中塗り塗料層を
介し又は介さずして、発泡性耐火塗料層をほぼ均一の厚
さに形成したことを特徴とする上記請求項1ないし4の
いずれか記載のハイブリッド耐火被覆構造体。5. A chamfered curve is formed on a protruding corner of a non-foamable refractory coating material layer covering a corner of the basic structure,
On the surface of the external corner portion subjected to chamfering, and not through or passing through the intermediate coating layer, to free the claim 1, characterized in that the formation of the foamed refractory coating layer substantially uniform in thickness 4 A hybrid fire-resistant coating structure according to any one of the above.
火被覆材層の出隅部に対して、直線状に面取りを施し、For the protruding corner of the fire cladding material layer, bevel it in a straight line,
該面取りを施した出隅部の表面に、上記中塗り塗料層をOn the surface of the corner that has been chamfered, apply the intermediate coating layer
介し又は介さずして、発泡性耐火塗料層をほぼ均一の厚With or without interposition, the foamable refractory paint layer has a nearly uniform thickness.
さに形成したことを特徴とする上記請求項1ないし4の5. The method according to claim 1, wherein
いずれか記載のハイブリッド耐火被覆構造体。The hybrid fire-resistant coating structure according to any one of the above.
機質発泡体粉末又は粒を含む複合軽量骨材混入モルタル
を用い、 一部又は全体に鉄を使用した基本構造体の表面側を、上
記非発泡性耐火被覆材を塗布して覆った後に、上記中塗
り塗料層を介し又は介さずして、該非発泡性耐火被覆材
の表面側を、発泡性耐火塗料を塗布して覆ったことを特
徴とするハイブリッド耐火被覆工法。7. A non-foamable refractory coating material, wherein
Mortar with composite lightweight aggregate containing foam or powder
The use, the surface side of the base structure using iron part or whole, on
Serial after covering by applying a non-effervescent fireproofing material that, by not through or passing through the intermediate coating layer, the surface side of the non-expandable fireproofing material, covered by coating a foamable refractory coating A hybrid fire-resistant coating method characterized by the following.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6047332A JP2910820B2 (en) | 1994-03-17 | 1994-03-17 | Hybrid fire-resistant coating structure and fire-resistant coating method |
JP33320398A JP3572320B2 (en) | 1994-03-17 | 1998-11-24 | Hybrid fire-resistant coating structure and its fire-resistant coating method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6047332A JP2910820B2 (en) | 1994-03-17 | 1994-03-17 | Hybrid fire-resistant coating structure and fire-resistant coating method |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP33320398A Division JP3572320B2 (en) | 1994-03-17 | 1998-11-24 | Hybrid fire-resistant coating structure and its fire-resistant coating method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07259212A JPH07259212A (en) | 1995-10-09 |
JP2910820B2 true JP2910820B2 (en) | 1999-06-23 |
Family
ID=12772275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6047332A Expired - Lifetime JP2910820B2 (en) | 1994-03-17 | 1994-03-17 | Hybrid fire-resistant coating structure and fire-resistant coating method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2910820B2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4495529B2 (en) * | 2004-06-21 | 2010-07-07 | 菊水化学工業株式会社 | Fireproof coating and fireproof coating construction method |
DK1795668T3 (en) * | 2005-12-07 | 2010-09-13 | Berry Finance Nv | Floor panel with a fire retardant layer |
JP5644116B2 (en) * | 2010-01-21 | 2014-12-24 | 株式会社ブリヂストン | High flame retardant polyurethane foam |
JP5644189B2 (en) * | 2010-06-03 | 2014-12-24 | 株式会社ブリヂストン | High flame retardant polyurethane foam |
JP7127960B2 (en) * | 2015-01-22 | 2022-08-30 | 積水化学工業株式会社 | Fire resistant resin composition |
CN114658221A (en) * | 2022-03-28 | 2022-06-24 | 中国电建集团山东电力建设有限公司 | Method for light concrete fireproof construction of building steel structure |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0319558U (en) * | 1989-06-30 | 1991-02-26 | ||
JPH0441008U (en) * | 1990-08-07 | 1992-04-07 |
-
1994
- 1994-03-17 JP JP6047332A patent/JP2910820B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH07259212A (en) | 1995-10-09 |
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