A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FLUIDIZING AGENT COMPOSITION FOR SOIL CEMENT, CEMENT SUSPENSION, AND SOIL CEMENT
PROBLEM TO BE SOLVED: To provide a cement suspension which has a fluidity holding time of soil cement of 6 hours or more, which is a time for a table flow value to become 150 mm or less from a point at which soil cement is prepared, and to provide a fluidizing agent composition for soil cement which gives the cement suspension.SOLUTION: A fluidizing agent composition for soil cement contains (A) a water-soluble polymer, (B) alkali metal phosphate, and (C) one of alkali metal carbonate and alkali metal bicarbonate, where contents of the component (B) and the component (C) are 1-600 pts.mass and 100-1,500 pts.mass with respect to 100 pts.mass of the component (A). In the fluidizing agent composition for soil cement, the water-soluble polymer (A) contains a structural unit derived from a monomer having an ethylenically unsaturated bond and having a COO bond, preferably, contains a structural unit derived from an acrylic acid or its salt, and preferably has a weight average molecular weight of 50,000 or less.SELECTED DRAWING: None
【課題】ソイルセメントを調製した時点から、テーブルフロー値が１５０ｍｍ以下となるまでの時間（ソイルセメントの流動性保持時間）を６時間以上セメント系懸濁液及びそれを与えるソイルセメント用流動化剤組成物の提供。【解決手段】（Ａ）水溶性重合体と、（Ｂ）リン酸アルカリ金属塩と、（Ｃ）炭酸アルカリ金属塩及び重炭酸アルカリ金属塩のいずれか一方の化合物とを含有し、成分（Ｂ）及び（Ｃ）の含有量は、成分（Ａ）１００質量部に対して、夫々、１〜６００質量部及び１００〜１５００質量部であるソイルセメント用流動化剤組成物。前記水溶性重合体（Ａ）が、エチレン性不飽和結合を有する単量体に由来する構造単位であって、ＣＯＯ結合を有する構造単位、好ましくは、アクリル酸又はその塩に由来する構造単位を含み、重量平均分子量が５００００以下であることが好ましい、ソイルセメント用流動化剤組成物。【選択図】なし
FLUIDIZING AGENT COMPOSITION FOR SOIL CEMENT, CEMENT SUSPENSION, AND SOIL CEMENT
PROBLEM TO BE SOLVED: To provide a cement suspension which has a fluidity holding time of soil cement of 6 hours or more, which is a time for a table flow value to become 150 mm or less from a point at which soil cement is prepared, and to provide a fluidizing agent composition for soil cement which gives the cement suspension.SOLUTION: A fluidizing agent composition for soil cement contains (A) a water-soluble polymer, (B) alkali metal phosphate, and (C) one of alkali metal carbonate and alkali metal bicarbonate, where contents of the component (B) and the component (C) are 1-600 pts.mass and 100-1,500 pts.mass with respect to 100 pts.mass of the component (A). In the fluidizing agent composition for soil cement, the water-soluble polymer (A) contains a structural unit derived from a monomer having an ethylenically unsaturated bond and having a COO bond, preferably, contains a structural unit derived from an acrylic acid or its salt, and preferably has a weight average molecular weight of 50,000 or less.SELECTED DRAWING: None
【課題】ソイルセメントを調製した時点から、テーブルフロー値が１５０ｍｍ以下となるまでの時間（ソイルセメントの流動性保持時間）を６時間以上セメント系懸濁液及びそれを与えるソイルセメント用流動化剤組成物の提供。【解決手段】（Ａ）水溶性重合体と、（Ｂ）リン酸アルカリ金属塩と、（Ｃ）炭酸アルカリ金属塩及び重炭酸アルカリ金属塩のいずれか一方の化合物とを含有し、成分（Ｂ）及び（Ｃ）の含有量は、成分（Ａ）１００質量部に対して、夫々、１〜６００質量部及び１００〜１５００質量部であるソイルセメント用流動化剤組成物。前記水溶性重合体（Ａ）が、エチレン性不飽和結合を有する単量体に由来する構造単位であって、ＣＯＯ結合を有する構造単位、好ましくは、アクリル酸又はその塩に由来する構造単位を含み、重量平均分子量が５００００以下であることが好ましい、ソイルセメント用流動化剤組成物。【選択図】なし
FLUIDIZING AGENT COMPOSITION FOR SOIL CEMENT, CEMENT SUSPENSION, AND SOIL CEMENT
ソイルセメント用流動化剤組成物、セメント系懸濁液及びソイルセメント
KURANO AKIO (author) / ACHINAMI MASAFUMI (author) / YAMAMOTO JIRO (author)
2018-01-25
Patent
Electronic Resource
Japanese
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