JPH0363107A - Form material and buried form using same and manufacture thereof - Google Patents
Form material and buried form using same and manufacture thereofInfo
- Publication number
- JPH0363107A JPH0363107A JP19931589A JP19931589A JPH0363107A JP H0363107 A JPH0363107 A JP H0363107A JP 19931589 A JP19931589 A JP 19931589A JP 19931589 A JP19931589 A JP 19931589A JP H0363107 A JPH0363107 A JP H0363107A
- Authority
- JP
- Japan
- Prior art keywords
- formwork
- concrete
- latex
- calcium silicate
- drying
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000378 calcium silicate Substances 0.000 claims abstract description 23
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 23
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000004816 latex Substances 0.000 claims abstract description 17
- 229920000126 latex Polymers 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000009415 formwork Methods 0.000 claims description 60
- 238000000465 moulding Methods 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004898 kneading Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 39
- 238000001035 drying Methods 0.000 abstract description 17
- 239000002002 slurry Substances 0.000 abstract description 15
- 239000002270 dispersing agent Substances 0.000 abstract description 14
- 230000018044 dehydration Effects 0.000 abstract description 8
- 238000006297 dehydration reaction Methods 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract description 6
- 239000002657 fibrous material Substances 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 5
- 238000001027 hydrothermal synthesis Methods 0.000 abstract description 4
- 239000000919 ceramic Substances 0.000 abstract description 3
- 239000000839 emulsion Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract description 2
- 230000009970 fire resistant effect Effects 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 description 9
- -1 polypropylene Polymers 0.000 description 9
- 229910052602 gypsum Inorganic materials 0.000 description 8
- 239000010440 gypsum Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 239000000123 paper Substances 0.000 description 8
- 239000002023 wood Substances 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000011800 void material Substances 0.000 description 5
- 239000011268 mixed slurry Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000007580 dry-mixing Methods 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- UGGQKDBXXFIWJD-UHFFFAOYSA-N calcium;dihydroxy(oxo)silane;hydrate Chemical compound O.[Ca].O[Si](O)=O UGGQKDBXXFIWJD-UHFFFAOYSA-N 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Natural products O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 239000008240 homogeneous mixture Substances 0.000 description 2
- 238000007602 hot air drying Methods 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- KVBGVZZKJNLNJU-UHFFFAOYSA-N naphthalene-2-sulfonic acid Chemical compound C1=CC=CC2=CC(S(=O)(=O)O)=CC=C21 KVBGVZZKJNLNJU-UHFFFAOYSA-N 0.000 description 2
- 238000011085 pressure filtration Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- SSONCJTVDRSLNK-UHFFFAOYSA-N 2-methylprop-2-enoic acid;hydrochloride Chemical compound Cl.CC(=C)C(O)=O SSONCJTVDRSLNK-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 150000008055 alkyl aryl sulfonates Chemical class 0.000 description 1
- 229920006317 cationic polymer Polymers 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- GSGDTSDELPUTKU-UHFFFAOYSA-N nonoxybenzene Chemical compound CCCCCCCCCOC1=CC=CC=C1 GSGDTSDELPUTKU-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002587 poly(1,3-butadiene) polymer Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Moulds, Cores, Or Mandrels (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、コンクリートを打設するときに用いられる型
枠材料、特に、コンクリートに円形又は多角形の貫通孔
や窪みを作ったり、コンクリートの表面を曲面にしたり
するときに使用する埋設型枠用の型枠材料、それを用い
た埋設型枠及びその製造方法に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention is applicable to formwork materials used when pouring concrete, particularly for making circular or polygonal through holes or depressions in concrete, This invention relates to a formwork material for an embedded formwork used to curve a surface, an embedded formwork using the same, and a manufacturing method thereof.
（従来の技術とその課題〉
従来、コンクリートを打設するときに使用される型枠材
料としては、木質系材料、紙質系材料、金属系材料及び
窯業系材料等が一般的である。(Prior art and its problems) Conventionally, the formwork materials used when pouring concrete are generally wood-based materials, paper-based materials, metal-based materials, ceramic-based materials, and the like.
しかしながら、建設現場において、容易に切断加工、穴
あけ加工及び釘打ち加工等が可能な型枠は、木質系や紙
質系の型枠材料を使用した型枠だけであり、木質系や紙
質系の型枠材料以外の他の型枠材料を使用した型枠は、
現場での前記各加工がほとんど不可能で、現場合わせに
よる修正や細工を行うことが難しく、寸法精度の高い型
枠を必要としており、必ずしも簡便な型枠とは言い難い
課題があった。However, at construction sites, the only formwork that can be easily cut, drilled, nailed, etc. is the only formwork that uses wood-based or paper-based formwork materials; Formwork using other formwork materials other than the frame material is
It is almost impossible to carry out the above-mentioned processing on-site, it is difficult to carry out corrections and modifications based on on-site adjustments, and a formwork with high dimensional accuracy is required, which is a problem that cannot necessarily be called a simple formwork.
一方、木質系や紙質系の型枠材料を使用した型枠は、現
場加工が可能なため、簡便な型枠であり、コンクリート
に穴をあけたり、コンクリートの表面を曲面にしたりす
るときの型枠としては、使用しやすいものである。On the other hand, formwork using wood-based or paper-based formwork materials is a simple formwork because it can be processed on-site. The frame is easy to use.
特に、設備配管用の貫通孔や空調用の貫通孔などには、
紙質系の型枠材料を使用した型枠が通称ボイド管として
使用されている。In particular, for through holes for equipment piping and through holes for air conditioning, etc.
A formwork made of paper-based formwork material is commonly known as a void tube.
しかしながら、木質系や紙質系の型枠材料は、燃えやす
い材料であるため、それを使用した型枠を埋設型枠とし
て、そのままコンクリート中に残すことは、防災上好ま
しくなく、また、防火区画等の面からは、法的な基準を
満たすことはできないという課題があった。However, wood-based and paper-based formwork materials are easily flammable, so it is not desirable for disaster prevention to leave formwork made from them in concrete as buried formwork, and it is not recommended for fire prevention zones, etc. From this point of view, there was an issue that legal standards could not be met.
したがって、−船釣には、これらの型枠材料を使用した
型枠を用いた場合は、コンクリートが十分に硬化した後
に、型枠を外す作業が必要であった。この作業は、コン
クリートの柱・梁・床及び壁等の、平面が平坦な場所で
は簡単であるが、コンクリートの柱・梁・床及び壁等の
内部への貫通孔や曲面部では、かなり困難をきわめてい
た。Therefore, when using formwork made of these formwork materials for boat fishing, it was necessary to remove the formwork after the concrete had sufficiently hardened. This work is easy on flat surfaces such as concrete columns, beams, floors, and walls, but it is quite difficult when there are through holes or curved surfaces inside concrete columns, beams, floors, and walls. He was very thorough.
また、不燃材料で、比較的加工しやすいといわれている
石膏ボードを型枠に利用する試みもなされている（特公
平１−３０９８６号公報）。Furthermore, attempts have been made to use gypsum board, which is said to be a noncombustible material and relatively easy to process, for formwork (Japanese Patent Publication No. 1-30986).
しかしながら、一般には、石膏ボードそのものの曲げ強
度が、２０〜３０ｋｇ／ｃｍ”とかなり低いため、石膏
ボードをコンクリートの打設の型枠として利用する場合
、石膏ボードの厚みをかなり厚くするか、石膏ボードの
コンクリートとは逆の面に補強板を沿わせる必要があっ
た。However, in general, the bending strength of gypsum board itself is quite low at 20 to 30 kg/cm", so when using gypsum board as a formwork for pouring concrete, it is necessary to make the gypsum board considerably thicker or to It was necessary to place the reinforcing plate along the opposite side of the board from the concrete.
石膏ボードの厚みを厚くする場合は、経済的に不利にな
ると共に、石膏ボード自身の柔軟性が失われるという課
題があった。Increasing the thickness of the gypsum board is not only economically disadvantageous, but also causes problems in that the gypsum board itself loses its flexibility.
また、石膏ボードのコンクリートとは逆の面に補強板を
沿わせる場合は、壁等のように平面的に簡単な形状では
有効であるが、コンクリート内への貫通部、曲面部及び
柱と梁の取り合い部などの複雑な形状部では、補強板を
沿わせること自体、かなり困難であるという課題があっ
た。In addition, when placing a reinforcing plate along the opposite side of the gypsum board from the concrete, it is effective for a simple planar shape such as a wall, but it is also effective when placing a reinforcing plate along the opposite side of the gypsum board from the concrete. There was a problem in that it was quite difficult to fit the reinforcing plate along complex-shaped parts such as the connecting parts.
ましてや、貫通部や曲面部などは、コンクリート硬化後
に補強板を取り除く作業を必要とするので、木質系や紙
質系の型枠材料を用いたものとなんら変わらないという
課題があった。Moreover, since reinforcing plates must be removed from penetrations and curved surfaces after the concrete has hardened, this is no different from using wood-based or paper-based formwork materials.
本発明者らは、前記課題を解消すべく、種々検討を重ね
た結果、特定の材料を使用することによって、木質系や
紙質系の型枠材料を使用した型枠が有する、現場加工の
しやすさを保持しながら、金属系や窯業系の型枠材料を
使用した型枠が有する不燃性を兼ね備える埋設型枠が得
られる知見を得て本発明を完成するに至った。In order to solve the above problems, the present inventors have conducted various studies and found that by using a specific material, the on-site processing of formwork using wood-based or paper-based formwork materials is improved. The present invention was completed based on the knowledge that it is possible to obtain an embedded formwork that is easy to use and has the nonflammability of formwork made of metal or ceramic formwork materials.
〈課題を解決するための手段〉
即ち、本発明は、ケイ酸カルシウム、ラテックス及び繊
維質を主成分とする型枠材料であり、それを使用した埋
設型枠であり、その製造方法である。<Means for Solving the Problems> That is, the present invention is a formwork material whose main components are calcium silicate, latex, and fibers, an embedded formwork using the same, and a method for manufacturing the same.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
本発明で使用するケイ酸カルシウムは、特に制限される
ものではないが、石灰質原料、ケイ酸質原料及び水を用
い、水熱合成反応で得られたものが好ましく、ゾノトラ
イトやトバモライトと呼ばれるものが好ましい。The calcium silicate used in the present invention is not particularly limited, but it is preferably one obtained by a hydrothermal synthesis reaction using a calcareous raw material, a silicate raw material, and water, and those called xonotlite or tobermorite are preferred. preferable.
石灰質原料とケイ酸質原料との配合割合は、台底するケ
イ酸カルシウムによって異なるが、ゾノトライトの場合
、Ｃａｂ／Ｓｉｎｇモル比でほぼ１／１が好ましいが、
これに限定されるものではない。The blending ratio of the calcareous raw material and the silicic raw material varies depending on the calcium silicate base, but in the case of xonotlite, the Cab/Sing molar ratio is preferably approximately 1/1;
It is not limited to this.
本発明で使用するラテックスとは、ケイ酸カルシウムと
繊維質を結合させるものである。具体的には、エチレン
−酢ビ共重合体、自己架橋型アクリル酸エステル重合体
、スチレン−ブタジェン共重合体、アクリロニトリル−
ブタジェン共重合体、ブタジェン重合体、メタクリル酸
メチル−ブタジェン共重合体、イソプレン重合体、エチ
レンープロヒレン共重合体及びクロロブレンゴムラテッ
クス等が使用できる。The latex used in the present invention is one that combines calcium silicate and fiber. Specifically, ethylene-vinyl acetate copolymer, self-crosslinking acrylic acid ester polymer, styrene-butadiene copolymer, acrylonitrile-
Butadiene copolymers, butadiene polymers, methyl methacrylate-butadiene copolymers, isoprene polymers, ethylene-prohylene copolymers, chloroprene rubber latex, and the like can be used.
ラテックスの使用量は、ケイ酸カルシウム１００重量部
に対し、固形分換算で１〜４０重量部が好ましい。１重
量部未満では、加工性に難点が生じ、４０重量部をこえ
ると不燃性に難点が生じる。The amount of latex used is preferably 1 to 40 parts by weight in terms of solid content per 100 parts by weight of calcium silicate. If the amount is less than 1 part by weight, there will be problems in processability, and if it exceeds 40 parts by weight, there will be problems in nonflammability.
本発明で使用する繊維質とは、ガラス繊維、木綿、クラ
フトパルプ、レーヨン、ポリプロピレン、ポリエチレン
、ビニロン及びナイロン等の繊維が使用できるが、これ
らに限定されるものではない。The fibers used in the present invention include, but are not limited to, fibers such as glass fiber, cotton, kraft pulp, rayon, polypropylene, polyethylene, vinylon, and nylon.
繊維質の使用量は、型枠材料としての物性面からは特に
制限はないが、成形性の面から、ケイ酸カルシウム１０
０重量部に対し、ｌ〜３０重量部が好ましい。The amount of fibrous material to be used is not particularly limited from the viewpoint of physical properties as a formwork material, but from the viewpoint of moldability, calcium silicate 10
It is preferably 1 to 30 parts by weight relative to 0 parts by weight.
本発明のケイ酸カルシウム、ラテックス及び繊維質を主
成分とする型枠材料を使用して、型枠を作成するさいに
、さらに、分散剤、高分子凝集剤や、高炉スラグ、フラ
イアッシュ及びシリカヒユーム等の無機質の混和材や増
量材、さらには、耐水付与剤やはつ水剤等の有機質の混
和剤等を併用することができる。When creating a form using the form material of the present invention whose main components are calcium silicate, latex, and fibrous material, a dispersant, a polymer flocculant, blast furnace slag, fly ash, and silica fume are further added. Inorganic admixtures and fillers, such as, and organic admixtures such as water resistance imparting agents and water repellent agents can be used in combination.
ここで、分散剤としては、アニオン系分散剤、ノニオン
系分散剤及びカチオン系分散剤のいずれも使用可能であ
る。Here, as the dispersant, any of anionic dispersants, nonionic dispersants, and cationic dispersants can be used.
例えば、アニオン系分散剤では、リグニン、高級多価ア
ルコールのスルホン酸塩、オキシ有機酸、アルキルアリ
ルスルホン酸塩又はその高縮合物、メラミン縮合物、β
−ナフタレンスルホン酸ホルマリン縮合物及び高級アル
コール硫酸エステルソーダ塩等がある。For example, anionic dispersants include lignin, higher polyhydric alcohol sulfonates, oxyorganic acids, alkylaryl sulfonates or their high condensates, melamine condensates, β
- Naphthalene sulfonic acid formalin condensates and higher alcohol sulfate ester sodium salts.
ノニオン系分散剤では、ポバール、メチルセルロース、
ポリオキシエチレン、ノニルフェニルエーテル及びスチ
リルフェニルエーテル等がある。Nonionic dispersants include poval, methyl cellulose,
Examples include polyoxyethylene, nonylphenyl ether, and styryl phenyl ether.
また、カチオン系分散剤では、２−ア藁ノエチルメタク
リレート塩酸塩及び２−ヒドロキシ−３−トリメチルア
ミノプロピルメタクリレートクロライド等が挙げられる
。Examples of cationic dispersants include 2-acetyl methacrylate hydrochloride and 2-hydroxy-3-trimethylaminopropyl methacrylate chloride.
分散剤の使用量は、ケイ酸カルシウム１００重量部に対
し、固形分換算で、０．１〜１０重量部が好ましい。０
．１重量部未満では、使用効果が乏しく、１０重量部を
越えて使用しても使用効果に変わりがない。The amount of the dispersant used is preferably 0.1 to 10 parts by weight in terms of solid content per 100 parts by weight of calcium silicate. 0
．． If it is less than 1 part by weight, the effect of use is poor, and if it is used in excess of 10 parts by weight, there is no difference in the effect of use.
さらに、高分子凝集剤としては、ポリジアルキルアミノ
アルキルアクリレート、ポリアミノメチルアクリルアミ
ド、ポリビニルビリジニュウムハロゲン塩及びポリビニ
ルイミダプリン等の四級アミン化合物があり、特に、カ
チオン系高分子凝集剤のポリジアルキルアミノアルキル
アクリレートや、ポリメチルアクリルアミドなどのポリ
アクリルアミドが好ましい。Furthermore, examples of polymer flocculants include quaternary amine compounds such as polydialkylaminoalkyl acrylate, polyaminomethyl acrylamide, polyvinyl pyridinium halide salts, and polyvinylimidapurine. Preferred are dialkylaminoalkyl acrylates and polyacrylamides such as polymethylacrylamide.
高分子凝集剤の使用量は、多ければ多いほど、型枠の曲
げ強度が増すが、不燃性が低下するため、固形分換算の
ラテックス１００重量部に対し、５０ｆｉ量部以下が好
ましく、１〜３０重量部がより好ましい。The larger the amount of polymer flocculant used, the higher the bending strength of the formwork, but the lower the nonflammability, so it is preferably 50 parts by weight or less, and 1 to 1 More preferably 30 parts by weight.
以上の材料を用いて、本発明の埋設型枠を製造する方法
について説明する。A method for manufacturing the embedded formwork of the present invention using the above materials will be explained.
製造工程は、例えば、混合工程、成形工程及び養生工程
の三つの工程にわけることができる。The manufacturing process can be divided into three processes, for example, a mixing process, a molding process, and a curing process.
混合工程としては、乾式混合と湿式混合の両方が考えら
れる。As the mixing process, both dry mixing and wet mixing are possible.
乾式混合は、水熱合成で得られたケイ酸カルシウムのス
ラリーを乾燥後、ラテックスエマルジョンをスプレード
ライヤーなどで乾燥したもので、水と接触すると再乳化
する粉体のラテックスや、繊維質及び粉体の分散剤や高
分子凝集剤などを乾燥状態で均一に混合する方法である
。この方法では、１０〜３０分程度の短時間で、均一混
合が可能となる。Dry mixing involves drying a slurry of calcium silicate obtained through hydrothermal synthesis, and then drying the latex emulsion using a spray dryer, etc. This process produces powdered latex that re-emulsifies when it comes into contact with water, as well as fibrous and powdered materials. This method involves uniformly mixing dispersants, polymer flocculants, etc. in a dry state. This method allows uniform mixing in a short time of about 10 to 30 minutes.
また、湿式混合ではケイ酸カルシウムのスラリーにラテ
ックス、繊維質及び分散剤や高分子凝集剤などを添加し
て、均一なスラリーが得られるまで、攪拌しながら混合
する方法である。この方法では、ケイ酸カルシウムのス
ラリーを乾燥する必要がないので、乾燥の手間やエネル
ギーが節約できる。In wet mixing, latex, fibers, a dispersant, a polymer flocculant, and the like are added to a slurry of calcium silicate, and the mixture is mixed with stirring until a uniform slurry is obtained. This method does not require drying the calcium silicate slurry, which saves time and energy for drying.
乾式混合にしても湿式混合にしても、均一な混合物を得
ることが重要である。Whether dry or wet mixing, it is important to obtain a homogeneous mixture.
均一な混合物となった型枠材料から成形体を得る方法に
ついて説明する。A method for obtaining a molded body from a mold material that has become a homogeneous mixture will be described.
乾式混合で得られた型枠材料でも、ラテックスの接合力
を十分に発揮させるためには、水分を加えて、−度スラ
リー状に戻すことが好ましい。Even if the formwork material is obtained by dry mixing, it is preferable to add moisture and return it to a slurry form in order to fully exhibit the bonding power of the latex.
成形方法としては、このスラリーを加圧しながら脱水す
る方法（加圧脱水法〉、あるいは、加圧しながら濾過す
る方法（加圧濾過法）などが−船釣に用いられる。また
、それらの工程を分離して、脱水した後、あるいは、濾
過した後、加圧成形する方法もある。さらに、脱水又は
濾過した後押出しによって成形する方法や遠心成形する
方法などもある。なお、遠心成形では、脱水又は濾過と
同時に成形することも可能である。Forming methods include a method of dewatering the slurry while pressurizing it (pressure dehydration method), or a method of filtering it while applying pressure (pressure filtration method), which is used for boat fishing. There is also a method of separation and dehydration or filtration followed by pressure molding.Furthermore, there are also methods of dehydration or filtration followed by extrusion molding and centrifugal molding.In centrifugal molding, dehydration Alternatively, it is also possible to perform molding at the same time as filtration.
加圧条件は、特に制限されるものではないが、５〜１０
０ｋｇ／ｃ＋！が好ましく、１０〜８０ｋｇ／ｃｄがよ
り好ましい、５ｋｇ／ｃ４未満では、十分な成形体強度
が得られず、１００ｋｇ／ｃ＋ｊを越えると、加圧中に
成形体が圧壊する恐れがある。Pressurization conditions are not particularly limited, but 5 to 10
0kg/c+! is preferable, and 10 to 80 kg/cd is more preferable. If it is less than 5 kg/c4, sufficient strength of the molded article cannot be obtained, and if it exceeds 100 kg/c+j, there is a risk that the molded article will be crushed during pressurization.
また、加圧時間は短ければ短い程成形性の面で好ましい
が、現状では、成形体の強度の面から、少なくとも１０
秒程度は必要であり、好ましくは１０秒〜３０分、より
好ましくは１０分以下である。３０分を越えて加圧して
も、得られる成形体強度はほとんど変わらない。In addition, the shorter the pressurizing time, the better from the viewpoint of formability, but at present, from the viewpoint of the strength of the molded product, at least 10
About a second is required, preferably 10 seconds to 30 minutes, more preferably 10 minutes or less. Even if the pressure is applied for more than 30 minutes, the strength of the obtained molded product hardly changes.
成形体の一例として、円筒形の成形物を成形する場合、
半円筒形に加圧成形したものを二個づつ接合する方法、
縦方向即ち円筒方向に加圧する方法、遠心成形する方法
、押出し成形する方法、円筒の内部から外側に向かって
ローラー転圧する方法及びそれらを組み合わせる方法等
が考えられる。As an example of a molded product, when molding a cylindrical molded product,
A method of joining two pieces press-formed into semi-cylindrical shapes,
Possible methods include a method of applying pressure in the longitudinal direction, that is, a cylindrical direction, a method of centrifugal molding, a method of extrusion molding, a method of roller rolling from the inside of the cylinder to the outside, and a method of combining these methods.
これらの成形方法の場合、成形する前に、脱水又は濾過
することも可能であり、成形と同時に行うことも可能で
ある。In the case of these molding methods, dehydration or filtration can be carried out before molding, or can be carried out simultaneously with molding.
養生工程は、成形工程を経たケイ酸カルシウムの成形体
を乾燥する工程である。The curing process is a process of drying the calcium silicate molded body that has undergone the molding process.
一般に乾燥方法としては、熱風乾燥が用いられる。熱風
乾燥の乾燥温度は、８０〜１８０°Ｃが好ましく、１０
０〜１５０°Ｃがさらに好ましい。８０°Ｃ未満では、
乾燥に長時間を必要とすると共に、十分な乾燥が期待で
きない。また、１８０°Ｃを越えると、ラテックスが硬
化して、乾燥した成形物が脆くなるので好ましくない。Generally, hot air drying is used as a drying method. The drying temperature of hot air drying is preferably 80 to 180°C, and 10
0 to 150°C is more preferred. Below 80°C,
It takes a long time to dry, and sufficient drying cannot be expected. Furthermore, if the temperature exceeds 180°C, the latex will harden and the dried molded product will become brittle, which is not preferable.
さらに、その他の乾燥方法としては、マイクロウェーブ
を用いて乾燥する方法、真空又は真空脱水乾燥する方法
などがある。Furthermore, other drying methods include a method of drying using microwaves, a method of vacuum or vacuum dehydration drying, and the like.
乾燥時間は、長ければ長い程確実に乾燥されるので好ま
しいが、通常は２４時間以内であり、８〜１６時間が好
ましい。また、マイクロウェーブを用いる場合は、さら
に、短時間での乾燥が可能である。The longer the drying time, the more reliable the drying, so it is preferable, but it is usually within 24 hours, preferably 8 to 16 hours. Further, when using microwaves, drying can be performed in a shorter time.
〈実施例〉 以下、本発明を実施例に基づいて詳しく説明する。<Example> Hereinafter, the present invention will be explained in detail based on examples.
実施例１
水酸化カルシウムとケイ酸粉末とを、ＣａＯ／ＳｉＯ□
モル比が１７１となるように配合し、その合計重量に対
し、１４重量倍量の水を加えスラリーとした。Example 1 Calcium hydroxide and silicic acid powder were mixed into CaO/SiO□
They were blended so that the molar ratio was 171, and 14 times the weight of water was added to the total weight to form a slurry.
このスラリーをオートクレーブ中で撹拌しながら２１０
″Ｃ１１９ｋｇ／ｃ−で６時間、水熱合成反応した。While stirring this slurry in an autoclave,
A hydrothermal synthesis reaction was carried out for 6 hours at 119 kg/c.
こうして得られたケイ酸カルシウムをＸ線回折したとこ
ろ、９０％以上がゾノトライトであった。When the calcium silicate thus obtained was subjected to X-ray diffraction, more than 90% was found to be xonotrite.
このスラリーを脱水し、水粉体比を９：ｌとした。This slurry was dehydrated to a water powder ratio of 9:l.
このスラリーに、ラテックスとしてエチレン−酢ビ共重
合体、繊維質としてガラス繊維及び分散剤として「セル
フロー１１０ Ｐ １を各々固形分換算で、表−１に示
す割合で添加した。To this slurry were added ethylene-vinyl acetate copolymer as a latex, glass fiber as a fibrous material, and "Cellflow 110 P1" as a dispersant in the proportions shown in Table 1 in terms of solid content.
このケイ酸カルシウム水和物混合スラリーを型枠に充填
し、３０ｋｇ／ｃｍ”の圧力で加圧濾過脱水し、１１０
°Ｃで２４時間乾燥してケイ酸カルシウム成形体を得た
。この成形体について、ＪＩＳ Ａ １４０Ｂに準じて
曲げ強度、釘打ちゃノコびきなどの加工操作を実施した
ときの木材との比較で判定した加工性とＪＩＳ Ａ １
３２１に準じて不燃性を各々測定し、成形性と共に表−
１に併記する。This calcium silicate hydrate mixed slurry was filled into a mold, and subjected to pressure filtration and dehydration at a pressure of 30 kg/cm.
A calcium silicate molded body was obtained by drying at °C for 24 hours. Regarding this molded body, bending strength according to JIS A 140B, workability determined by comparison with wood when processing operations such as nailing and sawing, and JIS A 1
The nonflammability was measured according to 321, and the table below along with the moldability
Also listed in 1.
なお、結果は、曲げ強度は数値と評価で、加工性、不燃
性及び成形性は各々評価で示した。The results are shown in numerical values and evaluations for bending strength, and evaluations for workability, nonflammability, and moldability.
評価のＯは良、△は可、×は不可である。An evaluation of O means good, △ means good, and × means bad.
〈使用材料〉
水酸化カルシウム：和光純薬■製、試薬１級ケイ酸粉末
二東海工業■商品名「伊豆特粉Ｊ、プレーン値５．０７
０ｃＴＡ／ｇ、 ５ｔＯｚ含有量９６．４％ラテックス
：エチレン−酢ビ共重合体、電気化学工業■製
繊維質 ：旭ファイバーガラス■製チョツプドストラ
ンド、長さ１３ｍｍ
分散剤 ：第一工業製薬■製商品名「セルフローｌｌ
０Ｐ Ｊ 主ｔｃ分β−ナフタレンスルホン酸ホルマリ
ン縮金物
実施例２
実施例１で得たケイ酸カルシウムのスラリーを脱水して
、水粉体圧２；１のスラリーを得た。このスラリーの固
形分１００重量部に対し、スチレン−ブタジェン共重合
体ラテ・ンクスを固形分換算で２０重量部、ガラス繊維
４．０重量部及びカチオン系高分子凝集剤のアクリルア
ミド型高分子凝集剤２．０重量部を添加し、十分に攪拌
分散したこと以外は実施例１と同様に行った。<Materials used> Calcium hydroxide: Manufactured by Wako Pure Chemical Industries, Ltd. Reagent 1st class silicic acid powder Ni Tokai Kogyo ■Product name: “Izu Tokufunko J, Plain value 5.07
0 cTA/g, 5 tOz content 96.4% Latex: Ethylene-vinyl acetate copolymer, manufactured by Denki Kagaku Kogyo ■ Fiber: Chopped strand manufactured by Asahi Fiberglass ■, length 13 mm Dispersant: Daiichi Kogyo Seiyaku ■ Product name: “Selfflow ll”
0P J Main tc content β-naphthalenesulfonic acid formalin condensate Example 2 The calcium silicate slurry obtained in Example 1 was dehydrated to obtain a slurry with a water powder pressure of 2:1. With respect to 100 parts by weight of the solid content of this slurry, 20 parts by weight of styrene-butadiene copolymer latex, 4.0 parts by weight of glass fiber, and an acrylamide type polymer flocculant such as a cationic polymer flocculant. The same procedure as in Example 1 was carried out except that 2.0 parts by weight was added and sufficiently stirred and dispersed.
その結果、曲げ強度は１０５ｋｇ／ｃｍ”で良、加工性
、不燃性及び成形性はいずれも良であった。As a result, the bending strength was good at 105 kg/cm'', and the workability, nonflammability, and moldability were all good.
実施例３
実施例１の実験Ｎｏ、１−２のケイ酸カルシウム水和物
混合スラリーを用いて、内径１２５ｍｍ、肉厚５ａ＋ａ
＋、長さＩｎの円筒状の埋設型枠を作成した。Example 3 Using the calcium silicate hydrate mixed slurry of Experiment No. 1-2 of Example 1, the inner diameter was 125 mm and the wall thickness was 5a+a.
+, a cylindrical embedded formwork with a length In was created.
コンクリート壁の鉄筋を組み上げてから、長さ２００ｎ
＋ｍに切断したこの埋設型枠を配管の通る位置に設置し
た後、コンクリート型枠で枠を作り、そのなかに生コン
を流しこんで、この埋設型枠を厚さ２００間のコンクリ
ート壁を貫く配管用の貫通孔として使用した。十分な養
生をして、コンクリートの強度が設計強度に達したこと
を確認した後、コンクリート型枠をはずし、この埋設型
枠が所定の位置にあることを確認した。その後、この貫
通孔の中に、サイズ８０Ａの水道用硬質塩ビライニング
鋼管を通し、さらに、その隙間にモルタルを詰めること
によって、壁を貫通する給水管を設置することができた
。After assembling the reinforcing bars of the concrete wall, the length is 200n.
After installing this buried formwork cut to +m in the position where the pipe will pass, create a frame with concrete formwork, pour ready-mixed concrete into it, and use this buried formwork to insert the pipe through the 200mm thick concrete wall. It was used as a through hole for After sufficient curing and confirmation that the strength of the concrete had reached the design strength, the concrete formwork was removed and the buried formwork was confirmed to be in its designated position. Thereafter, a hard PVC-lined steel pipe for water supply of size 80A was passed through this through-hole, and the gap was filled with mortar, thereby making it possible to install a water supply pipe that penetrated the wall.
この埋設型枠は不燃材料であるため、コンクリート内に
残しても防火区画としての役割を十分に果たした。Since this buried formwork was made of noncombustible material, it fulfilled its role as a fireproof zone even if it remained inside the concrete.
比較のため、同じ大きさのボイド管を用いて、同様の実
験を行った。このボイド管は可燃性のものであるため、
防火区画とするためには取りはずさなければならず、そ
の取り外しの作業は、コンクリートが硬化収縮すること
から、また、ボイド管が吸水して膨張することから、か
なりの困難を極め、作業工数として、多大の手間を要し
た。For comparison, a similar experiment was conducted using a void tube of the same size. This void pipe is flammable, so
In order to create a fireproof compartment, it must be removed, and the work of removing it is extremely difficult because the concrete hardens and shrinks, and the void pipe absorbs water and expands. It took a lot of effort.
また、ボイド管を抜いた後の作業は本発明の埋設型枠を
使用した場合と同様であるが、それと比ベ、かなり多く
の作業工数を要した。Further, although the work after removing the void pipe was similar to that when using the buried formwork of the present invention, it required considerably more man-hours.
実施例４
実施例１の実験Ｎα１−３のケイ酸カルシウム水和物混
合スラリーを用いて、内径７５．１００，１２５．１５
０開と、５０ｍａ＋ピッチで１５０〜１．０００ｍｍ、
、１．１００及び１，２００１ｍｍの埋設型枠を作成し
て、実施例３と同様の実験を行った。その結果実施例３
と同様、良好な結果が得られた。Example 4 Using the calcium silicate hydrate mixed slurry of experiment Nα1-3 of Example 1, the inner diameter was 75.100, 125.15.
0 opening and 150 to 1.000mm at 50ma + pitch,
, 1.100 mm and 1,2001 mm were created, and the same experiment as in Example 3 was conducted. Results Example 3
Similarly, good results were obtained.
実施例５
実施例１の実験隠１−２のケイ酸カルシウム水和物混合
スラリーを用いて、内径１００ Ｘ １００ｓ＋ｍで肉
厚５開の角柱状の埋設型枠を作成して、実施例３と同様
の実験をしたところ、同様に良好な結果が得られた。Example 5 Using the calcium silicate hydrate mixed slurry of Experiment 1-2 of Example 1, a prismatic buried formwork with an inner diameter of 100 x 100 s+m and a wall thickness of 5 mm was created, and the mold was prepared as in Example 3. A similar experiment was conducted and similarly good results were obtained.
〈発明の効果〉
本発明は、不燃性の無機材料であるケイ酸カルシウムを
主たる材料とし、この無機材料にポリマーを添加して成
形することにより、建設現場における、加工性能を付与
した埋設型枠を得る型枠材料であり、該材料を使用した
埋設型枠である。<Effects of the Invention> The present invention uses calcium silicate, which is a non-combustible inorganic material, as the main material, and by adding a polymer to this inorganic material and molding it, a buried formwork with processing performance is provided at a construction site. This is a formwork material for obtaining the material, and an embedded formwork using this material.
従って、建設現場で容易に加工できる簡便な型枠であり
ながら、コンクリート中に埋設しても、コンクリートの
不燃性を損なうことがなく、コンクリートの防火性能を
維持することができる効果を奏するものである。Therefore, although it is a simple formwork that can be easily processed at a construction site, it does not impair the non-combustibility of concrete even when buried in concrete, and has the effect of maintaining the fireproof performance of concrete. be.
また、木質系や紙質系などの型枠材料を使用した従来の
簡便な埋設型枠は、防火上の問題から、コンクリート硬
化後、取り外す手間を必要としていたことを考えると、
本発明の埋設型枠は、作業工程の簡素化にも役立ち、従
来の型枠以上の簡便な型枠を得ることができるという効
果を奏するものである。In addition, considering that conventional, simple buried formwork using wood-based or paper-based formwork materials required the effort to remove the concrete after it hardened due to fire safety issues.
The embedded formwork of the present invention is also useful for simplifying the work process, and has the effect that it is possible to obtain a formwork that is simpler than conventional formworks.
Claims (3)
分とする型枠材料。(1) Formwork material whose main components are calcium silicate, latex, and fiber.
設型枠。(2) An embedded formwork formed using the formwork material according to claim 1.
成形し、養生してなる請求項２記載の埋設型枠の製造方
法。(3) kneading the formwork material according to claim 1 and water and applying pressure;
3. The method of manufacturing an embedded formwork according to claim 2, which comprises molding and curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1199315A JP2741780B2 (en) | 1989-08-02 | 1989-08-02 | Formwork material, embedded formwork using the same, and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1199315A JP2741780B2 (en) | 1989-08-02 | 1989-08-02 | Formwork material, embedded formwork using the same, and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0363107A true JPH0363107A (en) | 1991-03-19 |
| JP2741780B2 JP2741780B2 (en) | 1998-04-22 |
Family
ID=16405760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1199315A Expired - Fee Related JP2741780B2 (en) | 1989-08-02 | 1989-08-02 | Formwork material, embedded formwork using the same, and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2741780B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330305A (en) * | 2019-07-15 | 2019-10-15 | 重庆大学 | A kind of hydrated calcium silicate imitated wood material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581519U (en) * | 1982-02-02 | 1983-01-07 | 富士ビ−・エス・コンクリ−ト株式会社 | Components of concrete slab or buried formwork |
| JPS6033212U (en) * | 1983-08-15 | 1985-03-07 | 鹿島建設株式会社 | double slab construction blocks |
| JPS62123053A (en) * | 1985-11-22 | 1987-06-04 | 宇部興産株式会社 | Calcium silicate and manufacture |
-
1989
- 1989-08-02 JP JP1199315A patent/JP2741780B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581519U (en) * | 1982-02-02 | 1983-01-07 | 富士ビ−・エス・コンクリ−ト株式会社 | Components of concrete slab or buried formwork |
| JPS6033212U (en) * | 1983-08-15 | 1985-03-07 | 鹿島建設株式会社 | double slab construction blocks |
| JPS62123053A (en) * | 1985-11-22 | 1987-06-04 | 宇部興産株式会社 | Calcium silicate and manufacture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330305A (en) * | 2019-07-15 | 2019-10-15 | 重庆大学 | A kind of hydrated calcium silicate imitated wood material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2741780B2 (en) | 1998-04-22 |
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