JP2008189526A - Admixture for grout and cement composition for grout - Google Patents

Admixture for grout and cement composition for grout Download PDF

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JP2008189526A
JP2008189526A JP2007026493A JP2007026493A JP2008189526A JP 2008189526 A JP2008189526 A JP 2008189526A JP 2007026493 A JP2007026493 A JP 2007026493A JP 2007026493 A JP2007026493 A JP 2007026493A JP 2008189526 A JP2008189526 A JP 2008189526A
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grout
parts
mass
reducing agent
cement
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Takao Furusawa
孝男 古沢
Takeo Ozawa
武男 小澤
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Basf Pozzolith Ltd
Basfポゾリス株式会社
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039Premixtures of ingredients
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/302Water reducers
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/70Grouts, e.g. injection mixtures for cables for prestressed concrete

Abstract

<P>PROBLEM TO BE SOLVED: To provide an admixture for grout and a cement composition for grout. <P>SOLUTION: The admixture for grout contains a water-reducing agent, an expansive admixture, an inorganic fine powder, a viscous agent and a foaming agent. The water-reducing agent of 100 pts.mass contains 40-70 pts.mass of a polycarboxylate-based reducing agent and 60-30 pts.mass of a lignin sulfonate-based reducing agent. The admixture for grout and cement composition for grout using the admixture exhibits the effects of maintaining fluidity for a long period of time, no shrinkage and no bleeding and no separation of the components. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、主に土木、建築業界において使用されるグラウト用セメント混和材及びグラウト用のセメント組成物に関する。   The present invention relates to a grout cement admixture and a grout cement composition mainly used in the civil engineering and construction industries.
グラウト用のセメント混和材或いはグラウト組成物として減水剤、膨張材を主成分としているものが提案されている(例えば、特許文献1、2参照)。これらのグラウト用セメント混和材或いはグラウト組成物は、グラウト(コンクリート)に流動性、無ブリーディング性、無収縮性を付与してグラウト工事の作業性とグラウトの耐久性を高めている。
しかし近年ではグラウト材を使用する用途が広がり、広範囲の温度領域で流動性を長時間保持するグラウト用のセメント混和材或いはグラウト材が求められている。グラウト用セメント混和材或いはグラウト組成物の流動保持性を高める為の提案としてCaO原料、Al原料、及びCaSO原料を含む配合物を熱処理して生成する膨張物質と、側鎖にカルボキシル基とポリアルキレンオキサイド構造を有するポリカルボン酸系重合体とを含有してなるグラウト用のセメント混和材、あるいは該膨張物質と、該ポリカルボン酸系重合体と、流動化剤と、非晶質カルシウムアルミネートとを配合してなるグラウト用のセメント混和材と、セメント等からなるセメント組成物(特許文献3参照)、セメント、細骨材、減水剤、膨張材、無機質微粉末及び発泡物質からなる組成物において、減水剤の配合量がセメント100質量部に対し0.05〜4質量部であり、該減水剤100質量部中のメラミンスルホン酸塩系減水剤が10〜30質量部、ナフタレンスルホン酸塩系減水剤が55〜85質量部、リグニンスルホン酸塩系減水剤が5〜20質量部であることを特徴とするセメント系グラウト組成物(特許文献4参照)などが提案されているが十分ではなかった。
As a grout cement admixture or a grout composition, a water-reducing agent and an expansion material as main components have been proposed (for example, see Patent Documents 1 and 2). These cement admixtures or grout compositions for grout increase the workability of grout work and the durability of the grout by imparting fluidity, no bleeding, and no shrinkage to the grout (concrete).
However, in recent years, the use of grout materials has expanded, and there has been a demand for cement admixtures or grout materials for grout that retain fluidity for a long time in a wide temperature range. As a proposal for improving the fluidity retention of a cement admixture for grout or a grout composition, an expansion material produced by heat-treating a mixture containing a CaO raw material, an Al 2 O 3 raw material, and a CaSO 4 raw material, and a carboxyl group in the side chain A cement admixture for grout comprising a group and a polycarboxylic acid polymer having a polyalkylene oxide structure, or the expansion material, the polycarboxylic acid polymer, a fluidizing agent, and an amorphous material. From a grout cement admixture containing calcium aluminate and a cement composition made of cement or the like (see Patent Document 3), cement, fine aggregate, water reducing agent, expansion material, inorganic fine powder and foamed material In the composition, the blending amount of the water reducing agent is 0.05 to 4 parts by mass with respect to 100 parts by mass of cement, and melamine in 100 parts by mass of the water reducing agent Cement grout comprising 10-30 parts by weight of a sulfonate salt water reducing agent, 55-85 parts by weight of a naphthalene sulfonate water reducing agent, and 5-20 parts by weight of a lignin sulfonate water reducing agent. A composition (see Patent Document 4) has been proposed, but it was not sufficient.
また、グラウト用混和材やグラウト組成物に減水剤としてポリアルキレングリコール鎖を有するポリカルボン酸系高分子化合物とポリアルキレングリコール及び炭素数8〜22の脂肪酸から選ばれる1種又は2種以上とを含む粒子を含有する粉末状セメント分散剤(特許文献5参照)、更には特定の分子構造を有する水溶性ビニル共重合体と特定の還元性無機化合物との水系混合物を乾燥し、粉砕した粉末状セメント分散剤(特許文献6参照)を使用すれば流動性の保持時間は長めとなるがせいぜい常温で60分程度の保持であり、特に高温時では流動性の保持に問題があった。また、これらの分散剤の使用量を増加して流動性の保持時間を延長しようとしてもセメントペーストと骨材が分離して耐久性に優れるグラウトを製造することが出来なかった。
特公昭48−9331号公報 特公昭56−6381号公報 特開平11−79816号公報 特開2003−171162号公報 特開2000−26146号公報 特許3490338号公報
Further, a polycarboxylic acid polymer compound having a polyalkylene glycol chain as a water reducing agent and one or more selected from polyalkylene glycol and a fatty acid having 8 to 22 carbon atoms are added to the admixture for grout and the grout composition. Powdered cement dispersant containing particles to be contained (see Patent Document 5), and further, an aqueous mixture of a water-soluble vinyl copolymer having a specific molecular structure and a specific reducing inorganic compound is dried and pulverized. If a cement dispersant (see Patent Document 6) is used, the fluidity retention time becomes longer, but at most it is about 60 minutes at room temperature, and there is a problem in fluidity retention particularly at high temperatures. Moreover, even if the amount of these dispersants used is increased to extend the fluidity retention time, it is impossible to produce a grout having excellent durability due to separation of cement paste and aggregate.
Japanese Patent Publication No. 48-9331 Japanese Examined Patent Publication 56-6381 JP 11-79816 A Japanese Patent Laid-Open No. 2003-171162 JP 2000-26146 A Japanese Patent No. 3490338
従って、本発明が解決しようとする課題は、流動性、無ブリーディング性、無収縮性を有し、セメントペーストと骨材が分離することなく耐久性に優れ、かつ、広範囲の温度領域で流動性の低下が少ないグラウト用混和材及びグラウト用のセメント組成物を提供することにある。   Accordingly, the problems to be solved by the present invention are fluidity, no bleeding, no shrinkage, excellent durability without separation of cement paste and aggregate, and fluidity in a wide temperature range. An object of the present invention is to provide a grouting admixture and a grouting cement composition with a low decrease in the grouting.
本発明者らは前記課題を解決すべく、種々検討した結果、減水剤にポリカルボン酸塩系減水剤とリグニンスルホン酸塩系減水剤とを特定の割合で併用し、膨張材、無機微粉末、増粘剤及び発泡材を配合したグラウト用混和材或いは当該混和材に、更にセメントと細骨材とを配合したグラウトのセメント組成物が、前記課題をすべて解決できる知見を得て本発明を完成するに至った。   As a result of various studies to solve the above-mentioned problems, the present inventors have used a water reducing agent in combination with a polycarboxylate-based water reducing agent and a lignin sulfonate-based water reducing agent in a specific ratio, and an expansion material, an inorganic fine powder. The present invention is based on the knowledge that a grout admixture in which a thickener and a foaming material are blended, or a grout cement composition in which cement and fine aggregate are further blended with the admixture, can solve all of the above problems. It came to be completed.
即ち、本発明は、減水剤、膨張材、無機微粉末、増粘剤及び発泡剤を含有してなるグラウト用混和材であって、該減水剤100質量部中のポリカルボン酸塩系減水剤が40〜70質量部、リグニンスルホン酸塩系減水剤が60〜30質量部であるグラウト用混和材に関する。また、本発明は、発泡剤がアルミニウム粉末、過酸化物、スルホニルヒドラジド化合物から選ばれる1種又は2種以上である前記グラウト用混和材に関する。
さらに、本発明は、セメント、減水剤、膨張材、無機微粉末、増粘剤、発泡剤及び細骨材を含有してなるグラウト用のセメント組成物であって、該減水剤100質量部中のポリカルボン酸塩系減水剤が40〜70質量部、リグニンスルホン酸塩系減水剤が60〜30質量部であり、該減水剤の配合量がセメント100質量部に対して0.2〜0.9質量部であるグラウト用のセメント組成物に関する。また、本発明は、発泡剤がアルミニウム粉末、過酸化物、スルホニルヒドラジド化合物から選ばれる1種又は2種以上である前記グラウト用のセメント組成物に関する。さらにまた、本発明は、セメント100質量部に対して膨張材の配合量が3〜15質量部、無機微粉末の配合量が0.5〜8質量部、増粘剤の配合量が0.005〜0.05質量部、細骨材の配合量が50〜300質量部である前記グラウト用のセメント組成物に関する。
That is, the present invention is a grout admixture comprising a water reducing agent, an expanding material, an inorganic fine powder, a thickener and a foaming agent, and is a polycarboxylate-based water reducing agent in 100 parts by mass of the water reducing agent. Is 40 to 70 parts by mass, and the lignin sulfonate-based water reducing agent is 60 to 30 parts by mass. Moreover, this invention relates to the said grout admixture whose foaming agent is 1 type, or 2 or more types chosen from an aluminum powder, a peroxide, and a sulfonyl hydrazide compound.
Furthermore, the present invention is a cement composition for grout comprising a cement, a water reducing agent, an expanding material, an inorganic fine powder, a thickening agent, a foaming agent and a fine aggregate, wherein 100 parts by weight of the water reducing agent The polycarboxylic acid salt water reducing agent is 40 to 70 parts by mass, the lignin sulfonate water reducing agent is 60 to 30 parts by mass, and the blending amount of the water reducing agent is 0.2 to 0 with respect to 100 parts by mass of cement. The present invention relates to a cement composition for grout, which is 9 parts by mass. The present invention also relates to the cement composition for grout, wherein the foaming agent is one or more selected from aluminum powder, peroxide, and sulfonyl hydrazide compound. Furthermore, in the present invention, the amount of the expansion material is 3 to 15 parts by mass, the amount of the inorganic fine powder is 0.5 to 8 parts by mass, and the amount of the thickener is 0.1. It is related with the cement composition for said grouts which are 005-0.05 mass parts and the compounding quantity of a fine aggregate is 50-300 mass parts.
本発明のグラウト用混和材及びこれを使用したグラウト組成物は流動性を長時間保持し、無収縮であり、ブリーディングや材料分離が無く、高強度を発現する等の効果がある。   The grout admixture of the present invention and the grout composition using the same have the effects of maintaining fluidity for a long time, no shrinkage, no bleeding and material separation, and high strength.
以下、本発明をさらに詳しく説明する。   Hereinafter, the present invention will be described in more detail.
本発明に使用される減水剤は、リグニンスルホン酸塩系減水剤とポリカルボン酸塩系減水剤である。リグニンスルホン酸塩系減水剤としては、リグニンスルホン酸のアルカリ金属及び/又はアルカリ金属塩などが例示できる。リグニンスルホン酸塩系減水剤の形態は、液体、粉体を問わないが、一般的にグラウト用混和材やグラウト用のセメント組成物はプレミックスされた粉体の形態で提供されるので粉体が好ましい。   The water reducing agent used in the present invention is a lignin sulfonate water reducing agent and a polycarboxylate water reducing agent. Examples of the lignin sulfonate-based water reducing agent include alkali metal and / or alkali metal salts of lignin sulfonic acid. The form of the lignin sulfonate water reducing agent is not limited to liquid or powder, but generally, the grout admixture and the cement composition for grout are provided in the form of a premixed powder. Is preferred.
本発明に使用されるポリカルボン酸塩系減水剤としては、周知のポリカルボン酸系高分子化合物が使用でき、例えば、ポリエチレングリコールメタクリレートとメタクリル酸との共重合体(例えば、特公昭59−18338号公報)、ポリエチレングリコールメタクリレートとメタクリル酸と不飽和カルボン酸のポリアルキレンオキシドを有するアミド化合物付加物との共重合体(例えば、特公平2−7897号公報)、ポリエチレングリコールメタクリレートとメタクリル酸との共重合体(例えば、特公平6−104585号公報)、不飽和結合を有するポリアルキレングリコールジエステル系単量体とアクリル酸系単量体と不飽和結合を有するポリアルキレングリコールモノエステル系単量体から選択された共重合体(例えば、特開平5−238795号公報)、オキシエチレン基が1〜10と11〜100の異なる鎖長のポリエチレングリコールメタクリレートとメタクリル酸との共重合体(例えば、特開平9−286645号公報)、ポリオキシアルキレン誘導体と無水マレイン酸との共重合体(例えば、特許2541218号公報)、ポリオキシアルキレン誘導体と無水マレイン酸との共重合体(例えば、特開平7−215746号公報)、アルケニルエーテルと無水マレイン酸との共重合体(例えば、特開平5−310458号公報)、炭素数2〜8のオレフィンとエチレン性不飽和ジカルボン酸無水物との共重合体(例えば、特許2933994号公報)、ポリアクリル酸や炭素数2〜8のオレフィンとエチレン性不飽和ジカルボン酸との共重合体などとの金属コンプレックス(例えば、特開昭62−83344号公報)、或いは前述の成分の併用(例えば、特許2741631号公報)、ポリアルキレングリコール鎖を有するポリカルボン酸系高分子化合物とポリアルキレングリコール及び炭素数8〜22の脂肪酸から選ばれる1種又は2種以上とを含む粒子を含有する粉末状セメント分散剤(例えば、特開2000−26146号公報)、特定の分子構造を有する水溶性ビニル共重合体と特定の還元性無機化合物との水系混合物を乾燥し、粉砕した粉末状セメント分散剤(例えば特許3490338号公報)、ポリオキシアルキレン含有構造成分、カルボン酸モノマー及び/又は無水カルボン酸モノマー並びに場合により他のモノマーから構成されている水溶性ポリマーを5〜95質量%及び0.5〜500m/gの比表面積(BET、DIN66131)を有する微粒状の無機担体材料を95〜5質量%を含有する微粒状無機担時体材料を含有することを特徴とする、ポリエーテルカルボキシレートをベースとする粉体状のポリマー組成物(例えば、特表2002−536289号公報)などが例示できる。ポリカルボン酸塩系減水剤の形態は、液体、粉体を問わないが、一般的にグラウト用混和材やグラウト用のセメント組成物は、粉体の形態で提供されるので粉体が好ましい。 As the polycarboxylate-based water reducing agent used in the present invention, a known polycarboxylic acid-based polymer compound can be used. For example, a copolymer of polyethylene glycol methacrylate and methacrylic acid (for example, Japanese Patent Publication No. 59-18338). No.), a copolymer of polyethylene glycol methacrylate and an amide compound adduct having a polyalkylene oxide of methacrylic acid and unsaturated carboxylic acid (for example, Japanese Patent Publication No. 2-7897), polyethylene glycol methacrylate and methacrylic acid Copolymer (for example, Japanese Patent Publication No. 6-104585), polyalkylene glycol diester monomer having an unsaturated bond, acrylic acid monomer, and polyalkylene glycol monoester monomer having an unsaturated bond A copolymer selected from (for example, JP-A-5 No. 238795), copolymers of polyethylene glycol methacrylate and methacrylic acid having different chain lengths of 1 to 10 and 11 to 100 oxyethylene groups (for example, JP-A-9-286645), polyoxyalkylene derivatives and anhydrous Copolymers with maleic acid (for example, Japanese Patent No. 2541218), copolymers of polyoxyalkylene derivatives and maleic anhydride (for example, JP-A-7-215746), copolymers of alkenyl ether and maleic anhydride Polymer (for example, JP-A-5-310458), copolymer of olefin having 2 to 8 carbon atoms and ethylenically unsaturated dicarboxylic acid anhydride (for example, Japanese Patent No. 2933994), polyacrylic acid and carbon number Metal composition of copolymer of 2-8 olefin and ethylenically unsaturated dicarboxylic acid Rex (for example, JP-A-62-83344), or a combination of the aforementioned components (for example, Japanese Patent No. 2741631), a polycarboxylic acid polymer compound having a polyalkylene glycol chain, a polyalkylene glycol, and a carbon number of 8 A powdery cement dispersant (for example, JP-A No. 2000-26146) containing particles containing one or more selected from ˜22 fatty acids, a water-soluble vinyl copolymer having a specific molecular structure, and Dry and pulverized powdered cement dispersant (for example, Japanese Patent No. 3490338), polyoxyalkylene-containing structural component, carboxylic acid monomer and / or carboxylic anhydride monomer, and optionally other 5 to 95% by mass and 0.5 to 5% of a water-soluble polymer composed of the monomer of A polyether carboxylate comprising a finely divided inorganic carrier material containing 95 to 5% by mass of a finely divided inorganic carrier material having a specific surface area (BET, DIN 66131) of 00 m 2 / g. Examples thereof include a powdery polymer composition (for example, JP 2002-536289 A). The form of the polycarboxylate-based water reducing agent may be liquid or powder. Generally, the grout admixture and the cement composition for grout are provided in the form of a powder, so that the powder is preferable.
本発明の減水剤は、該減水剤100質量部中のポリカルボン酸塩系減水剤が40〜70質量部、リグニンスルホン酸塩系減水剤が60〜30質量部である。グラウトの練り上がり温度が常温以下の場合、ポリカルボン酸塩系減水剤とリグニンスルホン酸塩系減水剤の配合割合はほぼ同等か若干リグニンスルホン酸塩系減水剤の配合割合が多くなるが、グラウトの練り上がり温度が常温より高い場合、ポリカルボン酸塩系減水剤の配合割合がリグニンスルホン酸塩系減水剤より多くなる傾向にある。これらの混合物である本発明の減水剤の配合量は、セメント100質量部に対して0.2〜0.9質量部であり、好ましくは0.3〜0.75質量部である。グラウトの練り上がり温度が高くなるほどポリカルボン酸塩系減水剤とリグニンスルホン酸塩系減水剤の混合物の配合量は増加する傾向にある。   The water reducing agent of the present invention is 40 to 70 parts by mass of the polycarboxylate-based water reducing agent and 100 to 30 parts by mass of the lignin sulfonate water reducing agent in 100 parts by mass of the water reducing agent. When the grout kneading temperature is below room temperature, the blending ratio of the polycarboxylate-based water reducing agent and the lignin sulfonate-based water reducing agent is almost the same or slightly higher, but the mixing ratio of the lignin sulfonate-based water reducing agent is slightly increased. When the kneading temperature is higher than room temperature, the blending ratio of the polycarboxylate-based water reducing agent tends to be higher than that of the lignin sulfonate-based water reducing agent. The blending amount of the water reducing agent of the present invention which is a mixture of these is 0.2 to 0.9 parts by mass, preferably 0.3 to 0.75 parts by mass with respect to 100 parts by mass of cement. The blending amount of the mixture of polycarboxylate-based water reducing agent and lignin sulfonate-based water reducing agent tends to increase as the grout kneading temperature increases.
本発明に使用する膨張材としては、特に限定されるものではなく、ブレーン値が2000〜3000cm/g程度或いは6000〜9000cm/g程度のカルシウムサルフォアルミネート系膨張材、石灰系膨張材、遊離石灰とカルシウムアルミノフェライトと無水石膏からなる膨張材などが挙げられ、また、これらの1種又は2種以上の混合使用もできる。膨張材の配合量は、セメント100質量部に対して1〜15質量部が好ましく、3〜12質量部がより好ましい。 The expansion material used in the present invention is not particularly limited, and calcium sulfoaluminate-based expansion material and lime-based expansion material having a brain value of about 2000 to 3000 cm 2 / g or about 6000 to 9000 cm 2 / g. , An expansion material composed of free lime, calcium aluminoferrite, and anhydrous gypsum, and the like, and these can be used alone or in combination. 1-15 mass parts is preferable with respect to 100 mass parts of cement, and, as for the compounding quantity of an expanding material, 3-12 mass parts is more preferable.
本発明に使用される無機微粉末としては、特に限定されるものではないが、高炉スラグ粉末、高炉スラグ微粉末、シリカフューム、フライアッシュなどが挙げられ、これらのうちの1種又は2種以上の混合使用が可能である。無機微粉末の配合量は、セメント100質量部に対して0.5〜8質量部が好ましく、1〜5質量部がより好ましい。   The inorganic fine powder used in the present invention is not particularly limited, and examples thereof include blast furnace slag powder, blast furnace slag fine powder, silica fume, fly ash, and the like. Mixed use is possible. 0.5-8 mass parts is preferable with respect to 100 mass parts of cement, and, as for the compounding quantity of an inorganic fine powder, 1-5 mass parts is more preferable.
本発明に使用される増粘剤は特に限定されるものではないがセルロース系、アクリル系、グアーガム系などが使用でき、好ましくはセルロース系高分子化合物、例えば、カルボキシメチルセルロース、メチルセルロース、ヒドロキシプロピルメチルセルロース、ヒドロキシエチルセルロース、ヒドロキシプロピルセルロースが例示できる。本発明ではこれらのうちの1種又は2種以上の使用が可能である。増粘剤の配合量はセメント100質量部に対して0.005〜0.05質量部が好ましく、0.01〜0.02質量部がより好ましい。   Although the thickener used in the present invention is not particularly limited, cellulose-based, acrylic-based, guar gum-based and the like can be used, and preferably a cellulose-based polymer compound such as carboxymethylcellulose, methylcellulose, hydroxypropylmethylcellulose, Examples thereof include hydroxyethyl cellulose and hydroxypropyl cellulose. In the present invention, one or more of these can be used. The blending amount of the thickener is preferably 0.005 to 0.05 parts by mass and more preferably 0.01 to 0.02 parts by mass with respect to 100 parts by mass of cement.
本発明に使用される発泡剤としては、アルミニウム粉末、過酸化物、スルホニルヒドラジド化合物が挙げられる。発泡剤は、水と練り混ぜたグラウト材に気体を発生する材料であり、この発泡作用によりグラウト材の沈下を防止し、構造物との一体化をはかる目的で使用される。また、本発明においてアルミニウム粉末は常温以下では発泡作用が小さく、スルホニルヒドラジド化合物は低温から高温まで幅広く安定した発泡作用が得られるので使用が好ましい。本発明ではこれらのうちの1種又は2種以上の使用が可能である。発泡剤の配合量は、使用する物質によって大きく異なるがセメント100質量部に対して0.001〜0.25質量部が好ましい。   Examples of the blowing agent used in the present invention include aluminum powder, peroxide, and sulfonyl hydrazide compound. A foaming agent is a material that generates gas in a grout material mixed with water, and is used for the purpose of preventing the settlement of the grout material and integrating with a structure by this foaming action. In the present invention, the aluminum powder has a small foaming action at room temperature or lower, and the sulfonyl hydrazide compound is preferably used because it provides a wide and stable foaming action from a low temperature to a high temperature. In the present invention, one or more of these can be used. The blending amount of the foaming agent varies greatly depending on the substance used, but is preferably 0.001 to 0.25 parts by mass with respect to 100 parts by mass of cement.
本発明のグラウト用のセメント組成物に使用されるセメントとしては、一般に使用される水硬性セメントであり、例えば、ポルトランドセメント、アルミナセメント、白色セメント、石灰混合セメント、高炉セメント、コロイドセメント、シリカセメント、フライアッシュセメント、スラグセメント等があり、これらは1種又は2種以上混合して使用することができる。   The cement used in the cement composition for grout of the present invention is a commonly used hydraulic cement, such as Portland cement, alumina cement, white cement, lime mixed cement, blast furnace cement, colloidal cement, silica cement. , Fly ash cement, slag cement and the like, and these can be used alone or in combination.
本発明のグラウト用のセメント組成物に使用される細骨材は、珪砂、川砂、石灰砕砂、砕砂、石材破砕物、磁器破砕物、ガラス破砕物、ガラスビーズ、軽量骨材等があり、これらは1種又は2種以上混合して使用することができる。また、流動性に影響のない範囲で細骨材の一部を豆砂利等の粗骨材に置換することもできる。細骨材の配合量は、セメント100質量部に対して50〜300質量部が好ましく、70〜250質量部がより好ましい。   Fine aggregates used in the cement composition for grout of the present invention include quartz sand, river sand, crushed lime, crushed sand, crushed stone, porcelain crushed, glass crushed, glass beads, lightweight aggregate, etc. Can be used alone or in combination. In addition, a part of the fine aggregate can be replaced with coarse aggregate such as pea gravel as long as the fluidity is not affected. The amount of the fine aggregate is preferably 50 to 300 parts by mass, more preferably 70 to 250 parts by mass with respect to 100 parts by mass of cement.
本発明では消泡剤、防錆剤、防凍剤、収縮低減剤、高分子エマルジョン、凝結調整剤、セメント急硬材、ベントナイト等の粘土鉱物などのうちの1種又は2種以上を、本発明の目的を実質的に阻害しない範囲で使用することが可能である。また、セメント、石粉、高炉スラグ粉末を増量の目的で使用することも可能である。   In the present invention, one or more of antifoaming agents, rust inhibitors, antifreeze agents, shrinkage reducing agents, polymer emulsions, setting modifiers, cement hardeners, clay minerals such as bentonite, etc. It is possible to use in the range which does not inhibit substantially the objective of this. It is also possible to use cement, stone powder, and blast furnace slag powder for the purpose of increasing the amount.
本発明のグラウト用混和材の配合量は、グラウト材としての目的を阻害しない範囲であれば特に限定されるものではなく、セメントとグラウト用混和材の総量に対する細骨材の比率により配合量を変更することが可能である。例えば、セメントとグラウト用混和材(増量材が混入されていない場合)の総量に対する細骨材の比率が1:2のグラウトの場合、セメントとグラウト用混和材の総量100質量部中、グラウト用混和材は6〜12質量部が好ましく、8〜10質量部がより好ましい。6質量部未満では流動性が悪くなり、間隙の充填が不十分となる場合があり、12質量部を超えると流動性が著しく大きくなり、グラウトの材料分離が生じやすくなる場合がある。   The blending amount of the grout admixture of the present invention is not particularly limited as long as it does not impair the purpose as a grout material, and the blending amount is determined by the ratio of fine aggregate to the total amount of cement and grout admixture. It is possible to change. For example, when the ratio of fine aggregate to the total amount of cement and grout admixture (when no extender is mixed) is 1: 2, the total amount of cement and grout admixture is 100 parts by mass. The admixture is preferably 6 to 12 parts by mass, and more preferably 8 to 10 parts by mass. If the amount is less than 6 parts by mass, the fluidity may be deteriorated and the gap may be insufficiently filled. If the amount exceeds 12 parts by mass, the fluidity may be significantly increased, and the grout material may be easily separated.
本発明のグラウト用混和材を練り混ぜる際に使用する水の量は、グラウト材としての目的を阻害しない範囲であれば特に限定されるものではないが、セメントとグラウト混和材(増量材が混入されていない場合)の総量100質量部に対して、35〜55質量部が好ましく、40〜50質量部がより好ましい。35質量部未満では流動性が悪くなり、間隙の充填が不十分となる場合があり、55質量部を超えると流動性が著しく大きくなり、グラウトの材料分離が生じやすくなる場合がある。   The amount of water used when kneading the grout admixture of the present invention is not particularly limited as long as it does not impair the purpose of the grout material. However, cement and grout admixture (mixed with the filler) are mixed. 35 to 55 parts by mass, and more preferably 40 to 50 parts by mass with respect to 100 parts by mass in total). If the amount is less than 35 parts by mass, the fluidity may be deteriorated and the gap may be insufficiently filled. If the amount exceeds 55 parts by mass, the fluidity may be significantly increased, and the grout material may be easily separated.
以下、実施例により本発明を詳細に説明する。なお、本発明はこれらに限定されるものではない。   Hereinafter, the present invention will be described in detail by way of examples. The present invention is not limited to these.
実施例1
表1〜3に示す質量部の膨張材、無機微粉末、増粘剤、ポリカルボン酸塩系減水剤、リグニンスルホン酸塩系減水剤、発泡剤からなり、更にこれらの合計がセメント100質量部に対して10質量部となるように増量材として普通セメントを加えて調整したグラウト用混和材を作製した。次いでセメント100質量部、グラウト用混和材10質量部、細骨材220質量部に、水を試験温度5℃のとき49.6質量部、試験温度20℃のとき48.4質量部、試験温度30℃のとき48.5質量部を加えてグラウトを練り混ぜた。流動性の評価としてJ14漏斗流下時間とフロー値を120分まで30分ごとに測定した。また、材料分離の評価としてブリーディング率を、更に初期膨張率と材齢7日における長さ変化率と材齢28日における圧縮強度を測定した。
Example 1
It consists of expansive material, inorganic fine powder, thickener, polycarboxylate-based water reducing agent, lignin sulfonate-based water reducing agent, and foaming agent shown in Tables 1 to 3, and the total of these is 100 parts by weight of cement. Thus, a grout admixture prepared by adding ordinary cement as an extender so as to be 10 parts by mass was prepared. Next, 100 parts by weight of cement, 10 parts by weight of an admixture for grout, 220 parts by weight of fine aggregate, 49.6 parts by weight of water when the test temperature is 5 ° C, 48.4 parts by weight when the test temperature is 20 ° C, and the test temperature At 30 ° C., 48.5 parts by mass were added and the grout was kneaded. The J 14 funnel flow time and the flow value as an evaluation of fluidity was measured every 30 minutes to 120 minutes. Moreover, as an evaluation of material separation, a bleeding rate was measured, an initial expansion rate, a length change rate at a material age of 7 days, and a compressive strength at a material age of 28 days were measured.
[使用材料]
セメント:市販普通ポルトランドセメント
膨張材:市販コンクリート用膨張材
細骨材:市販陸砂(F.M.=2.6)
減水剤:市販ポリカルボン酸塩系減水剤(太平洋マテリアル社製コアフローNF100)及び市販リグニンスルホン酸塩系減水剤(ボレガード社製ボレスパーズ)
無機微粉末:市販シリカフューム
増粘剤:市販セルロース系増粘剤
発泡剤:市販スルホニルヒドラジド化合物粉末
[試験方法]
14漏斗流下時間:土木学会試験方法JSCE−F541−1999によった。
[Materials used]
Cement: Commercial ordinary Portland cement Expansive material: Commercial concrete expansive material Fine aggregate: Commercial land sand (FM = 2.6)
Water reducing agent: Commercially available polycarboxylate-based water reducing agent (Core Flow NF100 manufactured by Taiheiyo Materials Co., Ltd.) and commercially available lignin sulfonate-based water reducing agent (Bolesparz manufactured by Boleguard)
Inorganic fine powder: Commercial silica fume Thickener: Commercial cellulose thickener Foaming agent: Commercial sulfonyl hydrazide compound powder [Test method]
J 14 funnel flow time: it was due to the Japan Society of Civil Engineers test method JSCE-F541-1999.
フロー値:JIS R 5201:1997に準じて測定した。ただし、フローテーブルを落下しないで、フローコーンを静かに鉛直に引き上げて広がったモルタルの径を測定した。   Flow value: Measured according to JIS R 5201: 1997. However, the diameter of the expanded mortar was measured by gently raising the flow cone vertically without dropping the flow table.
ブリーディング率:土木学会試験方法JSCE−F542−1999のブリーディング試験方法によった。   Bleeding rate: According to Japan Society of Civil Engineers test method JSCE-F542-1999 bleeding test method.
初期膨張率:土木学会試験方法JSCE−F542−1999の膨張率試験方法によった。   Initial expansion coefficient: According to Japan Society of Civil Engineers test method JSCE-F542-1999 expansion coefficient test method.
長さ変化率:JIS A 6202−1999附属書1の膨張率試験方法に準じて測定した。   Length change rate: Measured according to the expansion coefficient test method of JIS A 6202-1999 Annex 1.
圧縮強度:土木学会試験方法JSCE−G505−1999によった。   Compressive strength: According to Japan Society of Civil Engineers test method JSCE-G505-1999.
試験結果を表4〜6に示す。表4〜6より、本発明のグラウト用混和材を使用したグラウト用のセメント組成物は各温度においてフレッシュ性状は比較例に比べてJ14漏斗流下時間或いはフロー値の経時変化が小さく、高流動性を長時間保持することが可能である。また、ブリーディングや材料分離が無く、初期膨張率や長さ変化率は膨張側で良好な寸法安定性を有している。更に、圧縮強度は高強度を発現することが分かる。 Test results are shown in Tables 4-6. From Table 4-6, the cement composition for grout using grout admixtures of the present invention Fresh properties is small temporal change of J 14 funnel flow time or flow values as compared with the comparative example at each temperature, high flow It is possible to maintain the sex for a long time. In addition, there is no bleeding or material separation, and the initial expansion rate and length change rate have good dimensional stability on the expansion side. Furthermore, it turns out that compressive strength expresses high strength.
実施例2
表7に示す膨張材、無機微粉末、増粘剤、ポリカルボン酸塩系減水剤、リグニンスルホン酸塩系減水剤、発泡剤からなり、更にこれらの合計がセメント100質量部に対して10質量部となるように増量材として普通セメントを加えて調整したグラウト用混和材を作製した。次いでセメント100質量部、グラウト用混和材10質量部、細骨材110質量部に、水を試験温度5℃のとき40.7質量部、試験温度20℃のとき39.6質量部、試験温度30℃のとき38.5質量部を加えてグラウトを練り混ぜて、流動性の評価としてJ14漏斗流下時間とフロー値を120分まで30分ごとに測定した。また、材料分離の評価としてブリーディング率を、更に初期膨張率と材齢7日における長さ変化率と材齢28日における圧縮強度を測定した。使用材料、試験方法は実施例1と同様に行った。
Example 2
It consists of an expanding material, inorganic fine powder, thickener, polycarboxylate-based water reducing agent, lignin sulfonate-based water reducing agent, and foaming agent shown in Table 7, and the total of these is 10 masses per 100 parts by mass of cement. A grout admixture prepared by adding ordinary cement as an extender so as to be a part was prepared. Next, 100 parts by weight of cement, 10 parts by weight of an admixture for grout, 110 parts by weight of fine aggregate, 40.7 parts by weight of water when the test temperature is 5 ° C, 39.6 parts by weight when the test temperature is 20 ° C, and the test temperature At 30 ° C., 38.5 parts by mass were added and the grout was kneaded, and as a fluidity evaluation, the J14 funnel flow time and flow value were measured every 30 minutes up to 120 minutes. Moreover, as an evaluation of material separation, a bleeding rate was measured, an initial expansion rate, a length change rate at a material age of 7 days, and a compressive strength at a material age of 28 days were measured. The materials used and the test method were the same as in Example 1.
試験結果を表8、9に示す。表8、9より砂・セメント比を変化した場合も、本発明のグラウト用混和材を使用したグラウト用のセメント組成物は各温度においてフレッシュ性状は比較例に比べてJ14漏斗流下時間或いはフロー値の経時変化が小さく、高流動性を長時間保持することが可能である。また、ブリーディングや材料分離が無く、初期膨張率や長さ変化率は膨張側で良好な寸法安定性を有している。更に、圧縮強度は高強度を発現することが分かる。   The test results are shown in Tables 8 and 9. As shown in Tables 8 and 9, even when the sand / cement ratio was changed, the cement composition for grouting using the grouting admixture of the present invention had a fresh property at each temperature, and the J14 funnel flow time or flow value compared to the comparative example. It is possible to keep high fluidity for a long time. In addition, there is no bleeding or material separation, and the initial expansion rate and length change rate have good dimensional stability on the expansion side. Furthermore, it turns out that compressive strength expresses high strength.
実施例3
膨張材7質量部、無機微粉末1.5質量部、増粘剤0.02質量部、発泡剤0.1質量部、リグニンスルホン酸塩系減水剤0.25質量部、表10に示すポリカルボン酸塩減水剤を配合し、更にこれらの合計がセメント100質量部に対して10質量部となるように増量材として普通セメントを加えて調整したグラウト用混和材作製した。次いでセメント100質量部、グラウト用混和材10質量部、細骨材220質量部、水48.4質量部を加えてグラウトを練り混ぜて、流動性の評価としてJ14漏斗流下時間とフロー値を120分まで30分ごとに測定した。また、材料分離の評価としてブリーディング率を、更に初期膨張率と材齢7日における長さ変化率と材齢28日における圧縮強度を測定した。ポリカルボン酸塩を除く使用材料、試験方法は実施例1と同様に行った。市販ポリカルボン酸塩減水剤は以下に示すものを使用した。
Example 3
7 parts by weight of an expanding material, 1.5 parts by weight of inorganic fine powder, 0.02 parts by weight of a thickener, 0.1 parts by weight of a foaming agent, 0.25 parts by weight of a lignin sulfonate water reducing agent, A grout admixture was prepared by blending a carboxylate water reducing agent and adding ordinary cement as an extender so that the total of these was 10 parts by mass with respect to 100 parts by mass of cement. Then 100 parts by weight of cement, admixture 10 parts by grout, fine aggregate 220 parts by weight by adding water 48.4 parts by mass kneading grout, the J 14 funnel flow time and the flow value as the evaluation of flowability Measurements were made every 30 minutes up to 120 minutes. Moreover, as an evaluation of material separation, a bleeding rate was measured, an initial expansion rate, a length change rate at a material age of 7 days, and a compressive strength at a material age of 28 days were measured. Materials used and test methods other than polycarboxylates were the same as in Example 1. The commercially available polycarboxylate water reducing agent used was as follows.
A:太平洋セメント社製NF−100(メタクリル系ポリカルボン酸塩減水剤)
B:BASFコンストラクション社製メルフラックスAP100(ポリオキシアルキレングリコーリル−カルボキシレートをベースとしたポリカルボン酸塩減水剤)
C:BASFコンストラクション社製メルフラックス1641FとBASFコンストラクション社製メルフラックス2651Fの等量混合(ポリオキシアルキレングリコーリル−カルボキシレートをベースとしたポリカルボン酸塩減水剤)
試験結果を表11に示す。市販のポリカルボン酸塩B及びCを使用した場合でもAと同様に、本発明のグラウト用混和材を使用したグラウト組成物は各温度においてフレッシュ性状は比較例に比べてJ14漏斗流下時間或いはフロー値の経時変化が小さく、高流動性を長時間保持することが可能である。また、ブリーディングや材料分離が無く、初期膨張率や長さ変化率は膨張側で良好な寸法安定性を有している。更に、圧縮強度は高強度を発現することが分かる。
A: Taiheiyo Cement NF-100 (methacrylic polycarboxylate water reducing agent)
B: Melflux AP100 manufactured by BASF Construction (polycarboxylate water reducing agent based on polyoxyalkylene glycolyl carboxylate)
C: Equivalent mixing of BASF Construction Melflux 1641F and BASF Construction Melflux 2651F (Polyoxyalkylene glycolyl-carboxylate based polycarboxylate water reducing agent)
The test results are shown in Table 11. Similar to A even when using a commercially available polycarboxylate B and C, grout compositions using grout admixtures of the present invention Fresh properties at each temperature J 14 funnel flow time as compared with the comparative example or The change in flow value with time is small, and high fluidity can be maintained for a long time. In addition, there is no bleeding or material separation, and the initial expansion rate and length change rate have good dimensional stability on the expansion side. Furthermore, it turns out that compressive strength expresses high strength.
本発明のグラウト用混和材及びこれを使用したグラウト用のセメント組成物は、流動性を長時間保持し、無収縮であり、ブリーディングや材料分離が無く、高強度を発現する等の効果があり広い範囲の技術分野、特に土木、建築業界において利用可能である。   The grout admixture of the present invention and the grout cement composition using the same have the effects of maintaining fluidity for a long time, no shrinkage, no bleeding and material separation, and high strength. It can be used in a wide range of technical fields, especially in the civil engineering and construction industries.

Claims (5)

  1. 減水剤、膨張材、無機微粉末、増粘剤及び発泡剤を含有してなるグラウト用混和材であって、該減水剤100質量部中のポリカルボン酸塩系減水剤が40〜70質量部、リグニンスルホン酸塩系減水剤が60〜30質量部であることを特徴とするグラウト用混和材。   A grout admixture comprising a water reducing agent, an expanding material, an inorganic fine powder, a thickener and a foaming agent, and 40 to 70 parts by mass of a polycarboxylate-based water reducing agent in 100 parts by mass of the water reducing agent An admixture for grout, wherein the lignin sulfonate water reducing agent is 60 to 30 parts by mass.
  2. 発泡剤がアルミニウム粉末、過酸化物、スルホニルヒドラジド化合物から選ばれる1種又は2種以上であることを特徴とする、請求項1に記載のグラウト用混和材。   2. The grout admixture according to claim 1, wherein the foaming agent is one or more selected from aluminum powder, a peroxide, and a sulfonyl hydrazide compound.
  3. セメント、減水剤、膨張材、無機微粉末、増粘剤、発泡剤及び細骨材を含有してなるグラウト用のセメント組成物であって、該減水剤100質量部中のポリカルボン酸塩系減水剤が40〜70質量部、リグニンスルホン酸塩系減水剤が60〜30質量部であり、該減水剤の配合量がセメント100質量部に対して0.2〜0.9質量部であることを特徴とするグラウト用のセメント組成物。   A cement composition for grout comprising cement, a water reducing agent, an expanding material, an inorganic fine powder, a thickener, a foaming agent, and a fine aggregate, and a polycarboxylate based in 100 parts by mass of the water reducing agent The water reducing agent is 40 to 70 parts by mass, the lignin sulfonate-based water reducing agent is 60 to 30 parts by mass, and the blending amount of the water reducing agent is 0.2 to 0.9 parts by mass with respect to 100 parts by mass of cement. A cement composition for grout characterized by the above.
  4. 発泡剤がアルミニウム粉末、過酸化物、スルホニルヒドラジド化合物から選ばれる1種又は2種以上であることを特徴とする、請求項3に記載のグラウト用のセメント組成物。   The cement composition for grout according to claim 3, wherein the foaming agent is one or more selected from aluminum powder, peroxides, and sulfonyl hydrazide compounds.
  5. セメント100質量部に対して膨張材の配合量が3〜15質量部、無機微粉末の配合量が0.5〜8質量部、増粘剤の配合量が0.005〜0.05質量部、細骨材の配合量が50〜300質量部であることを特徴とする請求項3〜4のいずれかに記載のグラウト用のセメント組成物。   3 to 15 parts by mass of the expansion material, 0.5 to 8 parts by mass of the inorganic fine powder, and 0.005 to 0.05 parts by mass of the thickener with respect to 100 parts by mass of cement. The cement composition for grout according to any one of claims 3 to 4, wherein the amount of fine aggregate is 50 to 300 parts by mass.
JP2007026493A 2007-02-06 2007-02-06 Admixture for grout and cement composition for grout Pending JP2008189526A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010155757A (en) * 2008-12-27 2010-07-15 Taiheiyo Materials Corp Admixture for grout and grout composition
JP2010235361A (en) * 2009-03-31 2010-10-21 Ube Ind Ltd Self-flowing hydraulic composition
CN102001841A (en) * 2010-11-08 2011-04-06 福州大学 Preparation method of zymolytic lignin modified water reducing agent
JP2012214345A (en) * 2011-04-01 2012-11-08 Denki Kagaku Kogyo Kk Cement admixture and method for filling cavity
JP2015127285A (en) * 2013-12-28 2015-07-09 太平洋マテリアル株式会社 Premix grout composition
FR3030504A1 (en) * 2014-12-23 2016-06-24 Lafarge Sa PROCESS FOR THE CONTINUOUS PRODUCTION OF LOW-DENSITY MINERAL FOAM
JP2020055748A (en) * 2016-03-17 2020-04-09 太平洋マテリアル株式会社 Rapid hardening grout composition

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000351992A (en) * 1999-06-09 2000-12-19 Kao Corp Surfactant composition
JP2003321264A (en) * 2002-04-26 2003-11-11 Taiheiyo Material Kk Hydraulic composition and its hardened body
JP2004345898A (en) * 2003-05-22 2004-12-09 Nittetsu Cement Co Ltd Grout composition
WO2005123624A2 (en) * 2004-06-15 2005-12-29 Construction Research & Technology Gmbh Providing freezing and thawing resistance to cementitious compositions

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000351992A (en) * 1999-06-09 2000-12-19 Kao Corp Surfactant composition
JP2003321264A (en) * 2002-04-26 2003-11-11 Taiheiyo Material Kk Hydraulic composition and its hardened body
JP2004345898A (en) * 2003-05-22 2004-12-09 Nittetsu Cement Co Ltd Grout composition
WO2005123624A2 (en) * 2004-06-15 2005-12-29 Construction Research & Technology Gmbh Providing freezing and thawing resistance to cementitious compositions

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010155757A (en) * 2008-12-27 2010-07-15 Taiheiyo Materials Corp Admixture for grout and grout composition
JP2010235361A (en) * 2009-03-31 2010-10-21 Ube Ind Ltd Self-flowing hydraulic composition
CN102001841A (en) * 2010-11-08 2011-04-06 福州大学 Preparation method of zymolytic lignin modified water reducing agent
JP2012214345A (en) * 2011-04-01 2012-11-08 Denki Kagaku Kogyo Kk Cement admixture and method for filling cavity
JP2015127285A (en) * 2013-12-28 2015-07-09 太平洋マテリアル株式会社 Premix grout composition
FR3030504A1 (en) * 2014-12-23 2016-06-24 Lafarge Sa PROCESS FOR THE CONTINUOUS PRODUCTION OF LOW-DENSITY MINERAL FOAM
WO2016102838A1 (en) * 2014-12-23 2016-06-30 Lafarge Method for the continuous production of a low-density mineral foam
CN107207350A (en) * 2014-12-23 2017-09-26 拉法基公司 Method for continuously preparing low-density mineral froth
US10538462B2 (en) * 2014-12-23 2020-01-21 Holcim Technology Ltd Method for the continuous production of a low-density mineral foam
RU2731119C2 (en) * 2014-12-23 2020-08-31 Хольцим Текнолоджи Лтд Method of continuous production of mineral foam low density
JP2020055748A (en) * 2016-03-17 2020-04-09 太平洋マテリアル株式会社 Rapid hardening grout composition

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