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GROUT COMPOSITION
To provide a grout composition that has excellent flow characteristics and has high separation resistance without using a special admixture and thickener.SOLUTION: This invention relates to a grout composition containing a specific admixture and formed by using portland cement and/or blended cement as a binder. The grout composition is a water-soluble vinyl copolymer having an average molecular weight of 1,000-500,000, comprising: water and a binder, the mass ratio of water/binder being 18-62%; a constitutional unit L of 50-95 mass% based on 100 pts.mass of the binder, the unit L being shown by R1-O-(AO)n-R2 (R1: a 3C or 4C unsaturated acyl group, or a 2-5C alkenyl group, R2: hydrogen atom or a 1-8C alkyl group, AO: a 2-4C oxyalkylene group, n: the number of 5-200); and a constitutional unit M of 50-5 mass% based on 100 pts.mass of the binder, the unit M comprising a (meth)acrylic acid or its salt.SELECTED DRAWING: None
【課題】優れた流動特性を有し、且つ特殊な混和材や増粘剤を用いることなく、高い分離抵抗性を有するグラウト組成物を提供する。【解決手段】特定の混和剤を含有し、結合材にポルトランドセメント及び/又は混合セメントを使用してなるグラウト組成物であって、水/結合材の質量比が18〜62%、且つ結合材100質量部に対し、R1−O−(AO)n−R2(R1:炭素数3若しくは4の不飽和アシル基、又は炭素数2〜5のアルケニル基、R2:水素原子または炭素数1〜8のアルキル基、AO:炭素数2〜4のオキシアルキレン基、n:5〜200の数)で示される構成単位Lを50〜95質量%及び(メタ)アクリル酸/及びその塩から構成された構成単位Mを50〜5質量%の割合で有する質量平均分子量1000〜500000の水溶性ビニル共重合体。【選択図】なし
GROUT COMPOSITION
To provide a grout composition that has excellent flow characteristics and has high separation resistance without using a special admixture and thickener.SOLUTION: This invention relates to a grout composition containing a specific admixture and formed by using portland cement and/or blended cement as a binder. The grout composition is a water-soluble vinyl copolymer having an average molecular weight of 1,000-500,000, comprising: water and a binder, the mass ratio of water/binder being 18-62%; a constitutional unit L of 50-95 mass% based on 100 pts.mass of the binder, the unit L being shown by R1-O-(AO)n-R2 (R1: a 3C or 4C unsaturated acyl group, or a 2-5C alkenyl group, R2: hydrogen atom or a 1-8C alkyl group, AO: a 2-4C oxyalkylene group, n: the number of 5-200); and a constitutional unit M of 50-5 mass% based on 100 pts.mass of the binder, the unit M comprising a (meth)acrylic acid or its salt.SELECTED DRAWING: None
【課題】優れた流動特性を有し、且つ特殊な混和材や増粘剤を用いることなく、高い分離抵抗性を有するグラウト組成物を提供する。【解決手段】特定の混和剤を含有し、結合材にポルトランドセメント及び/又は混合セメントを使用してなるグラウト組成物であって、水/結合材の質量比が18〜62%、且つ結合材100質量部に対し、R1−O−(AO)n−R2(R1:炭素数3若しくは4の不飽和アシル基、又は炭素数2〜5のアルケニル基、R2:水素原子または炭素数1〜8のアルキル基、AO:炭素数2〜4のオキシアルキレン基、n:5〜200の数)で示される構成単位Lを50〜95質量%及び(メタ)アクリル酸/及びその塩から構成された構成単位Mを50〜5質量%の割合で有する質量平均分子量1000〜500000の水溶性ビニル共重合体。【選択図】なし
GROUT COMPOSITION
グラウト組成物
SUGANUMA YUKI (author) / TAMAKI SHINJI (author)
2019-06-06
Patent
Electronic Resource
Japanese
DISPERSANT FOR PC GROUT, COMPOSITION FOR PC GROUT, AND PC GROUT MATERIAL
European Patent Office | 2020
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