JPH0416571A - Lightweight cement material and production thereof - Google Patents
Lightweight cement material and production thereofInfo
- Publication number
- JPH0416571A JPH0416571A JP11865990A JP11865990A JPH0416571A JP H0416571 A JPH0416571 A JP H0416571A JP 11865990 A JP11865990 A JP 11865990A JP 11865990 A JP11865990 A JP 11865990A JP H0416571 A JPH0416571 A JP H0416571A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- synthetic resin
- foamed synthetic
- resin particles
- voids
- 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.)
- Pending
Links
- 239000004568 cement Substances 0.000 title claims abstract description 65
- 239000000463 material Substances 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000002245 particle Substances 0.000 claims abstract description 56
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 30
- 239000000057 synthetic resin Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 21
- 239000000853 adhesive Substances 0.000 claims abstract description 18
- 230000001070 adhesive effect Effects 0.000 claims abstract description 18
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 239000010874 unset cement Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 26
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 238000009415 formwork Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000012798 spherical particle Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000005245 sintering Methods 0.000 abstract description 2
- 238000010304 firing Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 9
- 238000009413 insulation Methods 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000011396 hydraulic cement Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 239000004794 expanded polystyrene Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229920006328 Styrofoam Polymers 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、建築物の不燃化、断熱・省エネルギー化、防
音化のために用いる軽量セメント材及びその製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lightweight cement material used for making buildings nonflammable, heat insulating, energy saving, and soundproof, and a method for producing the same.
［従来の技術］
近年、建築物の不燃化、断熱・省エネルギー化、防音化
への要望か強くなっており、それに適応した建築用部材
か求められている。特に、都市部の建築物や公共施設等
においては、法規制等により使用部材が厳しく制限され
ている。[Prior Art] In recent years, there has been an increasing demand for buildings to be flame-resistant, heat-insulating, energy-saving, and soundproof, and there is a demand for building materials that are compatible with these demands. Particularly, in buildings and public facilities in urban areas, the materials that can be used are severely restricted by laws and regulations.
又、施工の面からは短工期化、作業者の負担軽減、熟練
工の不足等の対策から、建築用部材の軽量化、ボード・
パネル化が進められている。In addition, from the construction perspective, we are reducing the weight of construction materials, reducing the weight of building materials, reducing the burden on workers, and addressing the shortage of skilled workers.
Panelization is underway.
ところが上布されている軽量セメント板は、強度、防火
性に優れ、建築材料として多く用いられているが、製品
重量が重く、取扱施工性の面で課遅かある。更に断熱性
能は有機質材料に比較して劣る。一方、発泡スチロール
成形品等の製品は軽量で断熱性能に優れ、建築、産業資
材に多く用いられている。しかし、同材料は強度、耐熱
性に劣る欠点がある。特に有機材料であるので、着火、
易燃性、燃焼継続性が大きい。However, although the lightweight cement board that is covered has excellent strength and fire resistance and is widely used as a building material, it is heavy and slow in terms of handling and construction. Furthermore, the thermal insulation performance is inferior to that of organic materials. On the other hand, products such as styrofoam molded products are lightweight and have excellent insulation performance, and are often used in construction and industrial materials. However, this material has the disadvantage of poor strength and heat resistance. Especially since it is an organic material, ignition,
Highly flammable and long-lasting.
このような状況の中で、セメント等の水硬性物質に、軽
量・断熱性にすぐれた発泡合成樹脂粒子を混入使用する
ことにより、より軽量で断熱性、防音性、防火性に優れ
た軽量コンクリートの製造法が提案されている（例えば
特公昭５４−１１８１４号公報参照）。Under these circumstances, by mixing foamed synthetic resin particles, which are lightweight and have excellent heat insulation properties, into hydraulic materials such as cement, we are creating lightweight concrete that is lighter and has excellent heat insulation, soundproofing, and fireproofing properties. A manufacturing method has been proposed (see, for example, Japanese Patent Publication No. 11814/1983).
［発明が解決しようとする課８］
上記従来の軽量コンクリート材は、発泡合成樹脂粒子を
コンクリート内に均一に混合、分散させることを狙って
いるが、水硬性結合材が完全に凝固する前に型枠内に充
填し、その後に水分を与えて凝固させて製造する方法を
採っているために、次のような問題がある。すなわち、
水硬性結合材は完全凝固していないために凝固強度が弱
く、これを型枠内に入れてから、水分を与えると、型枠
上部にある発泡合成樹脂粒子に付着している水硬性結合
材は型枠下方に流され、これによって製造された軽量セ
メント材は型枠の上部と下部とでは構成が異なり、強度
等の特性も不均一なものが生じる可能性がある。[Issue 8 to be solved by the invention] The above-mentioned conventional lightweight concrete materials aim to uniformly mix and disperse the foamed synthetic resin particles in the concrete, but the problem occurs before the hydraulic binder completely solidifies. Because the manufacturing method is to fill the mold into a mold and then add moisture to solidify it, there are the following problems. That is,
Since the hydraulic binder has not completely solidified, its coagulation strength is weak, and when it is placed in the mold and then moistened, the hydraulic binder adheres to the foamed synthetic resin particles at the top of the mold. is poured down the formwork, and the lightweight cement material produced thereby has a different structure between the upper and lower parts of the formwork, and may have non-uniform properties such as strength.
この現象を避けるためには、噴霧等で均一に少しずつ水
分の添加を行って、型枠上部の水硬化結合材の流失を押
えながら、徐々に凝固させていく必要があるが、凝固に
必要な水分を型枠下部にまで均一に浸透させるには長時
間必要となり、生産性が低下する。In order to avoid this phenomenon, it is necessary to add water uniformly and little by little by spraying, etc., and gradually solidify while preventing the water-cured binder from flowing away at the top of the formwork. It takes a long time to uniformly penetrate the moisture to the bottom of the formwork, which reduces productivity.
又、この方法では型枠に充填された発泡合成樹脂粒子は
、粒子間に多数の空隙を有する充填状態にあり、このよ
うな状態においては添加された水分は付着した水硬性結
合材粉末を湿潤するだけでなく、空隙部に保水されるた
めに、型枠下部の水硬性結合材粉末を凝固させるには規
定以上の水分を型枠上部から添加する必要か生じてくる
。このような水分添加方法では、型枠上部の水硬性結合
材粉末は硬化に最適な水分量以上の水分が存在する条件
で凝固するために強度等の良好な特性は得られない。更
に、上記の製造方法では、意図的に均一な連続した空隙
を形成することはできなく、均質な製品が得られないと
いう問題がある。In addition, in this method, the foamed synthetic resin particles filled in the mold are in a packed state with many voids between the particles, and in such a state, the added water wets the attached hydraulic binder powder. In addition, since water is retained in the voids, it becomes necessary to add more water than specified from the upper part of the mold in order to solidify the hydraulic binder powder in the lower part of the mold. In such a method of adding water, the hydraulic binder powder in the upper part of the mold solidifies under conditions where more water than the optimum amount of water exists for hardening, so good properties such as strength cannot be obtained. Furthermore, with the above manufacturing method, there is a problem in that it is not possible to intentionally form continuous, uniform voids, and a homogeneous product cannot be obtained.
［課題を解決するための手段］
本発明は、以上の点を改善するもので、その第一発明は
、多数の発泡合成樹脂粒子を均一に、しかもそれぞれの
発泡合成樹脂粒子が互いに全く接触することのない状態
で内包し、各発泡合成樹脂粒子の表面は接着材層及び外
層のセメント硬化層で構成され、それぞれの発泡合成樹
脂粒子の外層のセメント硬化層は、互いに隣接のセメン
ト硬化層と点や面で三次元的に接合硬化し、その接合部
以外には略均一的に形成された空隙部が存在し、かつ、
この空隙部は三次元的に連通する構造を有する軽量セメ
ント材である。[Means for Solving the Problems] The present invention improves the above points, and the first invention is to uniformly distribute a large number of foamed synthetic resin particles, and each foamed synthetic resin particle completely contacts each other. The surface of each foamed synthetic resin particle is composed of an adhesive layer and an outer cement hardened layer, and the outer cement hardened layer of each foamed synthetic resin particle is in contact with the adjacent cement hardened layer. The bond is hardened three-dimensionally at points and surfaces, and there are substantially uniformly formed voids outside of the bond, and
This void is a lightweight cement material that has a three-dimensionally communicating structure.
すなわち、この構成を第１図によって具体的に説明する
と、ｌは発泡スチロールビーズ等の発泡合成樹脂粒子で
、各粒子の表面には接着材２層を介してポルトランドセ
メントの如き水硬性のセメント硬化層３が形成されてお
り、かつセメント硬化層３は互いに隣接するセメント硬
化層３と点や面で三次元的に接合硬化しており、その接
合部以外には空隙部４か存在していて、それら空隙部４
は三次元的に連通した構造となっている。That is, to explain this configuration in detail with reference to FIG. 1, l is a foamed synthetic resin particle such as expanded polystyrene beads, and the surface of each particle is coated with a hardened layer of hydraulic cement such as Portland cement via two layers of adhesive. 3 is formed, and the hardened cement layer 3 is three-dimensionally bonded and hardened with the mutually adjacent hardened cement layers 3 at points and surfaces, and voids 4 exist outside the joint, Those voids 4
has a three-dimensionally connected structure.
又、第二発明は、接着材層及びその表面に外層のセメン
ト硬化層で構成され、前記接着材層内に独立空隙部が形
成されてなる多数の球状粒子のそれぞれの外層のセメン
ト硬化層は、互いに隣接のセメント硬化層と点や面で三
次元的に接合硬化し、その接合部以外には略均一的に形
成された空隙部か存在し、かつ、この空隙部は三次元的
に連通ずる構造を有することを特徴とする軽量セメント
材である。Further, the second invention comprises an adhesive layer and an outer cement hardened layer on the surface of the adhesive layer, and the outer cement hardened layer of each of a large number of spherical particles having independent voids formed in the adhesive layer. , the cement hardened layers are bonded and hardened three-dimensionally at points and surfaces with adjacent cement hardened layers, and there are voids formed approximately uniformly in areas other than those joints, and these voids are three-dimensionally connected. It is a lightweight cement material characterized by having a continuous structure.
すなわち、この構成を第２図によって具体的に説明する
と、接着材２層の表面には、ポルトランドセメントの如
き水硬性のセメント層３が形成され各粒子を構成し、か
つ各粒子のセメント硬化層３は互いに隣接するセメント
硬化層と点や面で三次元的に接合硬化しており、その接
合部以外には空隙部４が存在していて、それら空隙部４
は三次元的に連通した構造となっている。又、各粒子の
接着材２層の内部には前記第１図における発泡合成樹脂
粒子１が溶融収縮により溶融樹脂粒子１２が形成され、
接着材２層と溶融樹脂粒子との間には独立空隙部１１か
存在する構造となっている。That is, to explain this configuration in detail with reference to FIG. 2, a hydraulic cement layer 3 such as Portland cement is formed on the surface of the two adhesive layers to constitute each particle, and a hardened cement layer of each particle is formed. 3 is bonded and hardened three-dimensionally at points and surfaces with the cement hardened layers adjacent to each other, and voids 4 exist outside the joints, and these voids 4
has a three-dimensionally connected structure. Further, inside the two layers of adhesive of each particle, molten resin particles 12 are formed by melting and shrinking the foamed synthetic resin particles 1 shown in FIG.
The structure is such that independent voids 11 exist between the two layers of adhesive and the molten resin particles.
又、第三発明は、発泡合成樹脂粒子の表面に含水性の接
着材を塗布し、更にその表面に前記接着剤に含有された
水分にて完全に湿潤され得るよりも多いセメント粉末を
付着させて、セメント粉末で全表面が被覆され、互いに
分離独立して流動性を有する発泡合成樹脂粒子を形成し
、次に前記発泡合成樹脂粒子の全表面に被覆されたセメ
ント粉末を、前記接着剤に含有された水分により凝結硬
化させて硬質のセメント被膜を形成させた後、更に表面
の未凝結のセメント粉末を凝結硬化させるのに十分な量
の水分を与えて均一に混合し、これを型枠内に充填し、
加圧、成形して、各粒子間に三次元的に連通ずる空隙部
が存在するように一体的に硬化させる軽量セメント材の
製造方法である。Further, the third invention is to apply a water-containing adhesive to the surface of the foamed synthetic resin particles, and further adhere to the surface more cement powder than can be completely wetted by the moisture contained in the adhesive. Then, foamed synthetic resin particles whose entire surfaces are coated with cement powder and have fluidity and are separated from each other are formed. Next, the cement powder coated on the entire surfaces of the foamed synthetic resin particles is applied to the adhesive. After the contained moisture sets and hardens to form a hard cement film, enough water is added to set and harden the unset cement powder on the surface, and the mixture is uniformly mixed. Fill it inside,
This is a method for producing a lightweight cement material in which the particles are pressurized, molded, and integrally cured so that three-dimensionally communicating voids exist between each particle.
この方法を第３図（イ）〜（ハ）に基づいて説明すると
、まず、（イ）に示すように一つ一つの発泡合成樹脂粒
子ｌの表面に含水性の接着材２を薄く塗布し、ついで（
ｌｌＩ）に示す如くその全表面をポルトランドセメント
の如き水硬性のセメント粉末５をもって被覆し、互いに
分離独立して流動性を有する粒子とし、所定時間経過さ
せることによって、第３図（Ｉ・）に示す如く、セメン
ト粉末５は接着材２中の水分により、接着材との接触部
分から前記水分がいきとどく部分までを凝結型に完全硬
化して、硬質のセメント被膜５°及びその表面に僅かに
接着材中の水分がいきとどかないで水分と未反応の未凝
結のセメント粉末５か残るようにする。このような処理
した材料をプレミックス材と称する。To explain this method based on FIGS. 3(a) to 3(c), first, as shown in (a), a water-containing adhesive 2 is applied thinly to the surface of each foamed synthetic resin particle l. , then (
As shown in Figure 3 (I), the entire surface of the particle is coated with hydraulic cement powder 5 such as Portland cement, and the particles are separated from each other and have fluidity. As shown, the cement powder 5 is completely hardened by the moisture in the adhesive 2 from the part where it contacts the adhesive to the area where the moisture reaches, and a small amount is formed on the hard cement coating 5° and its surface. The water in the adhesive is not allowed to evaporate and some unset cement powder 5 remains unreacted with the water. Such treated materials are referred to as premix materials.
ついで、粒子表面の水分と未反応の未凝結のセメント粉
末５を凝結硬化させるのに十分な水分を該粒子に与えて
均一に混合する。この水分を与える手段としてはいくつ
かの方法かある。Next, enough moisture is applied to the particles to solidify and harden the unreacted and unset cement powder 5 with the moisture on the surface of the particles, and the particles are mixed uniformly. There are several ways to provide this moisture.
これを第４図ないし第７図に例示するが、必すしもこれ
らに限定されるものではない。This is illustrated in FIGS. 4 to 7, but is not necessarily limited thereto.
すなわち、第４図は撹拌槽６内に撹拌翼７を配設し、内
部にプレミックス材Ｍを装入して、これを撹拌翼７て撹
拌しながら、槽上力より水供給管８によって、必要水分
を噴霧する。第５図は撹拌ｊ！７を撹拌ＷＩ６の下方か
ら駆動するように構成し、上方の水供給管８より必要水
分を一面に噴霧するものである。第６図はプレミックス
材Ｍの供給管９の途中に水供給管８を配設し、供給管９
内で必要水分を付与するものである。第７図はプレミッ
クス材Ｍの供給にベルトコンベアＩＯを用い、そのベル
トコンベア１０上のプレミックス材Ｍに水供給管８より
必要水分を噴霧するものである。That is, in FIG. 4, a stirring blade 7 is arranged in a stirring tank 6, a premix material M is charged inside, and while being stirred by the stirring blade 7, water is supplied from the top of the tank through a water supply pipe 8. , spray the necessary moisture. Figure 5 shows stirring j! 7 is configured to be driven from below the stirring WI 6, and necessary water is sprayed over the entire surface from the water supply pipe 8 located above. FIG. 6 shows a water supply pipe 8 disposed in the middle of a supply pipe 9 for premix material M,
It provides the necessary moisture within the tank. In FIG. 7, a belt conveyor IO is used to supply the premix material M, and necessary water is sprayed onto the premix material M on the belt conveyor 10 from a water supply pipe 8.
このように水分を付与したプレミックス材Ｍを所望型枠
内に充填し、加圧成形を行い、これを凝結硬化させるこ
とにより所望軽量セメント材を得る。A desired lightweight cement material is obtained by filling the premix material M to which water has been added in this manner into a desired mold, performing pressure molding, and solidifying and hardening the material.
このようにプレミックス材Ｍを予めつくって用いること
により、均一な品質の製品を得ることができる。By preparing and using the premix material M in advance in this way, a product of uniform quality can be obtained.
本発明は又、第８図（イ）及び（＋１に示すように上記
により得られた軽量セメント材を内包する発泡合成樹脂
粒子が溶融、収縮する温度にて処理することにより、発
泡合成樹脂粒子のあとに独立空隙部を均一に形成せしめ
ることにより、独立空隙部と三次元的に連通する空隙を
同時に均一に具有する多孔質軽量セメント材（第２図参
照）を得る。二のような加熱処理は高温高圧蒸気釜内で
、製品の養生とともに行うとよい。As shown in FIG. 8(a) and (+1), the present invention also provides a method for forming foamed synthetic resin particles by treating them at a temperature at which the foamed synthetic resin particles encapsulating the lightweight cement material obtained above are melted and shrunk. By uniformly forming independent voids after that, a porous lightweight cement material (see Fig. 2) that uniformly has independent voids and voids communicating three-dimensionally can be obtained. It is best to carry out the treatment in a high-temperature, high-pressure steam oven while curing the product.
［実施例コ
直径１〜２ｍｓで２０ｇ／ ５１の嵩比重を有する発泡
ポリスチレン粒子を用い、この粒子ＩＩ（［１に固形分
として４５％のエチレン−酢酸ビニルを含有するエマル
ジョン１．８ｋｇを加え、撹拌機により均一混合し、各
粒子の表面に均一な厚みの接着材層を形成した。これに
セメント７．８ｋｇ 、珪砂７゜８ｋｇ 、石灰１．８
ｋｇを予め均一に混合した粉末を添加し、それぞれの粒
子が互いに分離独立して流動性を有する状態にし、これ
を２週間密封容器に貯蔵した。[Example II] Expanded polystyrene particles having a diameter of 1 to 2 ms and a bulk specific gravity of 20 g/51 were used. They were mixed uniformly using a stirrer to form an adhesive layer of uniform thickness on the surface of each particle.To this, 7.8 kg of cement, 7.8 kg of silica sand, and 1.8 kg of lime were added.
kg of powder that had been uniformly mixed in advance was added so that each particle had fluidity while being separated from each other, and this was stored in a sealed container for two weeks.
このようにして作製したプレミックス材を混合撹拌用の
容器に移し、撹拌しながら３９の水を少しずつ噴霧しな
がら加え、各粒子表面のセメント層を均質に湿潤させた
。The thus prepared premix material was transferred to a mixing and stirring container, and while stirring, the water of No. 39 was added little by little while being sprayed to homogeneously wet the cement layer on the surface of each particle.
これを１１Ｘ ２ｇＸ ３ｃｍの樹脂性型枠に充填し、
上方から成形板を使用して製品厚みか２ｃａ＋になるよ
うに圧縮成形し、このまま凝結、硬化させた。３日後に
取り出し、更に２週間室内で養生したところ嵩比重０．
３５、圧縮強度１５ｋｇ／ｃｍ２の均質な軽量セメント
板が得られた。Fill this into a resin mold of 11 x 2 g x 3 cm,
Compression molding was performed from above using a molding plate to a product thickness of 2 ca+, and the product was allowed to solidify and harden as it was. After 3 days, it was taken out and left to cure indoors for another 2 weeks, and the bulk specific gravity was 0.
35. A homogeneous lightweight cement board with a compressive strength of 15 kg/cm2 was obtained.
この軽量セメント板の熱伝導率をＪＩＳ−＾−１４２０
（住宅用断熱材の断熱性能試験方法）にしだがって測定
したところ、０．０８Ｋｃａｌ／ｍ２ｅ ｈ ・”Ｃと
断熱性に優れた結果が得られた。The thermal conductivity of this lightweight cement board is JIS-^-1420.
(Method for Testing Insulation Performance of Insulating Materials for Homes), the result was 0.08 Kcal/m2e h .''C, which was an excellent result of insulation properties.
実施例２
実施例１により得られた軽量セメント板を１８０℃の高
温高圧飽和蒸気釜内で１８時間熱処理を行い、取り出し
後に乾燥して、前記の方法で熱伝導率を測定したところ
、０．０６Ｋｃａｌ／ｍ２・ｈ・℃と処理前より良好な
断熱性能結果が得られた。Example 2 The lightweight cement board obtained in Example 1 was heat-treated in a high-temperature, high-pressure saturated steam oven at 180°C for 18 hours, and after being taken out, it was dried and its thermal conductivity was measured using the method described above. 06 Kcal/m2·h·°C, which was better than before the treatment, was obtained.
因みに従来の硬質木片セメント板は嵩比重０．９、熱伝
導率０．１３Ｋｃａｌ／ｓ２すｈ −”Ｃ、ポリスチレ
ンフオームは嵩比重０．０３、熱伝導率０．０３０Ｋｃ
ａｌ／ｓ２・ｈ ＊ ”Ｃ１空気の熱伝導率は０．０２
２Ｋｃａ１／ｍ２・ｈ・℃である。By the way, conventional hard wood cement boards have a bulk specific gravity of 0.9 and a thermal conductivity of 0.13 Kcal/s2Sh-''C, while polystyrene foam has a bulk specific gravity of 0.03 and a thermal conductivity of 0.030 Kc.
al/s2・h * “The thermal conductivity of C1 air is 0.02
2Kca1/m2・h・℃.
［発明の効果］
本発明軽量セメント材は、構成内容の大部分が不燃性の
セメント材であり、かつ、略均−に内包する発泡合成樹
脂粒子あるいは、その溶融収縮物の個々は、不燃性のセ
メント硬化層により隔絶され、断熱性の良好な空孔（空
気）中に存在するような多孔質構造のために断熱性能か
一層良好となり、更に着火、易燃性、焼結継続性も改善
され、防火性に優れた製品となる。又、略均−で三次元
的に連続した空隙と、セメント硬化層により隔絶された
多数の独立空隙を存する非常に多孔質な構造であるため
、二の軽量セメント材はエネルギー減衰能力が大きく、
騒音の防音性能も高い。[Effects of the Invention] The lightweight cement material of the present invention is composed mostly of nonflammable cement material, and each of the foamed synthetic resin particles or its melt-shrinkable particles that are approximately evenly encapsulated is nonflammable. Due to the porous structure, which is isolated by a hardened cement layer and exists in pores (air) with good insulation properties, the insulation performance is even better, and the ignition, flammability, and sintering continuity are also improved. This results in a product with excellent fire retardant properties. In addition, because it has a very porous structure with approximately uniform, three-dimensionally continuous voids and many independent voids separated by a hardened cement layer, the second lightweight cement material has a large energy attenuation ability.
It also has high noise-proofing performance.
更に、本発明の製造方法では、プレミックス材を用いる
ため、セメント材の偏在かな（、全体的に均一に均質な
軽量セメント材を容易に得ることができる。Furthermore, in the manufacturing method of the present invention, since a premix material is used, it is possible to easily obtain a lightweight cement material that is uniformly homogeneous throughout.
第１図は本発明の軽量セメント材の構成の説明図、第２
図は本発明の他の軽量セメント材の構成の説明図、第３
図は各粒子の製造工程における態様の説明図、第４〜７
図はプレミックス材に水分を添加する態様の説明図、第
８図は各粒子の製造工程における態様の説明図をそれぞ
れ示す。
■・・・発泡合成樹脂粒子、２・・・接着材、３・・・
セメント硬化層、４・・・空隙部、５・・・セメント粉
末、５°・・・セメント被膜、６・・・撹拌槽、７・・
・撹拌翼、８・・・水供給管、９・・・供給管、１０・
・・ベルトコンベア、１１・・・独立空隙部、１２・・
・溶融樹脂粒子、Ｍ・・・プレミックス材。Figure 1 is an explanatory diagram of the structure of the lightweight cement material of the present invention, Figure 2
Figure 3 is an explanatory diagram of the structure of another lightweight cement material of the present invention.
The figures are explanatory diagrams of aspects in the manufacturing process of each particle, Nos. 4 to 7.
The figure shows an explanatory diagram of the manner in which water is added to the premix material, and FIG. 8 shows an explanatory diagram of the aspect in the manufacturing process of each particle. ■...Foamed synthetic resin particles, 2...Adhesive material, 3...
Cement hardened layer, 4... Void portion, 5... Cement powder, 5°... Cement coating, 6... Stirring tank, 7...
- Stirring blade, 8... Water supply pipe, 9... Supply pipe, 10.
...Belt conveyor, 11...Independent cavity, 12...
- Molten resin particles, M...premix material.
Claims (4)
れの発泡合成樹脂粒子が互いに全く接触することのない
状態で内包し、各発泡合成樹脂粒子の表面は接着材層及
び外層のセメント硬化層で構成され、それぞれの発泡合
成樹脂粒子の外層のセメント硬化層は、互いに隣接のセ
メント硬化層と点や面で三次元的に接合硬化し、その接
合部以外には略均一的に形成された空隙部が存在し、か
つ、この空隙部は三次元的に連通する構造を有すること
を特徴とする軽量セメント材。(1) A large number of foamed synthetic resin particles are encapsulated uniformly in a state where each foamed synthetic resin particle does not come into contact with each other, and the surface of each foamed synthetic resin particle is covered with an adhesive layer and an outer cement hardening layer. The outer cement hardened layer of each foamed synthetic resin particle is three-dimensionally bonded and hardened with the adjacent cement hardened layer at points and surfaces, and is formed almost uniformly except for the joints. A lightweight cement material characterized by having voids and having a structure in which the voids communicate three-dimensionally.
構成され、前記接着材層内に独立空隙部が形成されてな
る多数の球状粒子のそれ ぞれの外層のセメント硬化層は、互いに隣接のセメント
硬化層と点や面で三次元的に接合硬化し、その接合部以
外には略均一的に形成された空隙部が存在し、かつこの
空隙部は三次元的に連通する構造を有することを特徴と
する軽量セメント材。(2) The outer cement hardened layer of each of the large number of spherical particles is composed of an adhesive layer and an outer cement hardened layer on the surface thereof, and independent voids are formed in the adhesive layer. The hardened cement layer is bonded and hardened three-dimensionally at points and surfaces, and there are voids formed substantially uniformly in areas other than the joints, and these voids have a structure that communicates three-dimensionally. A lightweight cement material characterized by:
し、更にその表面に前記接着剤に含有された水分にて完
全に湿潤され得るよりも多いセメント粉末を付着させて
、セメント粉末で全表面が被覆され、互いに分離独立し
て流動性を有する発泡合成樹脂粒子を形成し、次に前記
発泡合成樹脂粒子の全表面に被覆されたセメント粉末を
、前記接着剤に含有された水分により凝結硬化させて硬
質のセメント被膜を形成させた後、更に表面の未凝結の
セメント粉末を凝結硬化させるのに十分な量の水分を与
えて均一に混合し、これを型枠内に充填し、加圧、成形
して、各粒子間に三次元的に連通する空隙部が存在する
ように一体的に硬化させることを特徴とする軽量セメン
ト材の製造方法。(3) A water-containing adhesive is applied to the surface of the foamed synthetic resin particles, and cement powder is adhered to the surface in an amount larger than that which can be completely wetted with the water contained in the adhesive. The entire surface of the foamed synthetic resin particles are coated with the foamed synthetic resin particles, which are separated from each other and have fluidity. Next, the cement powder coated on the entire surface of the foamed synthetic resin particles is mixed with the moisture contained in the adhesive. After setting and hardening to form a hard cement film, add enough moisture to set and harden the unset cement powder on the surface, mix uniformly, and fill it into the formwork. 1. A method for producing a lightweight cement material, which comprises pressurizing, molding, and curing the particles integrally so that three-dimensionally communicating voids exist between each particle.
発泡合成樹脂粒子を溶融・収縮させうる高温にて熱処理
を施すことにより、発泡合成樹脂粒子のあとに多数の独
立空隙部を均一に形成する多孔質軽量セメント材の製造
方法。(4) In the manufacturing method of claim (3), a large number of independent voids are uniformly formed behind the foamed synthetic resin particles by further performing heat treatment at a high temperature capable of melting and shrinking the foamed synthetic resin particles. A method for producing a porous lightweight cement material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11865990A JPH0416571A (en) | 1990-05-10 | 1990-05-10 | Lightweight cement material and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11865990A JPH0416571A (en) | 1990-05-10 | 1990-05-10 | Lightweight cement material and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0416571A true JPH0416571A (en) | 1992-01-21 |
Family
ID=14742043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11865990A Pending JPH0416571A (en) | 1990-05-10 | 1990-05-10 | Lightweight cement material and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0416571A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50139817A (en) * | 1974-04-26 | 1975-11-08 | ||
| JPS5411814A (en) * | 1977-06-29 | 1979-01-29 | Kobe Steel Ltd | High speed steel made of nitrogen-contained powder |
| JPH01208350A (en) * | 1988-02-16 | 1989-08-22 | Miyoshi Shokai:Kk | Ultra lightweight concrete |
-
1990
- 1990-05-10 JP JP11865990A patent/JPH0416571A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50139817A (en) * | 1974-04-26 | 1975-11-08 | ||
| JPS5411814A (en) * | 1977-06-29 | 1979-01-29 | Kobe Steel Ltd | High speed steel made of nitrogen-contained powder |
| JPH01208350A (en) * | 1988-02-16 | 1989-08-22 | Miyoshi Shokai:Kk | Ultra lightweight concrete |
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