A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CONCRETE ADMIXTURE
PROBLEM TO BE SOLVED: To provide a combination of a cement dispersant and a shrinkage-reducing agent having excellent their compatibility with each other, which enables both effects of a shrinkage reducing property and a water-reducing property to be synergistically improved.SOLUTION: There is provided a concrete admixture that comprises: a polycarboxylic acid-based cement dispersant composed of a polymer compound having a polyamide-polyamine chain; and a shrinkage-reducing agent for a cement composition, comprising compound A represented by formula [1] and compound B represented by formula [2] in a mass ratio of compound A:compound B=99:1 to 50:50. (In formula [1], Rand Reach independently represent a C1-4 alkyl group; and n represents an average number of moles of addition of oxyethylene (EO) groups and is 2 or 3). (In formula [2], Rrepresents a C9-24 hydrocarbon group; and mand meach independently represent an average number of moles of addition of oxyethylene (EO) groups and is 0 to 30, where a total value of mand mis 1 to 30).
【課題】収縮低減性と減水性の双方の効果を相乗的に向上できる、互いに相溶性に優れたセメント分散剤と収縮低減剤との組み合わせの提供。【解決手段】ポリアマイドポリアミン鎖を有する高分子化合物からなるポリカルボン酸系セメント分散剤と、式［１］で表される化合物Ａ及び式［２］で表される化合物Ｂを、化合物Ａ：化合物Ｂ＝９９：１〜５０：５０の質量比で含むセメント組成物用収縮低減剤とを含むコンクリート混和剤。（Ｒ１及びＲ２は各々独立してＣ１〜４のアルキル基；但し、ｎはオキシエチレン（ＥＯ）基の平均付加モル数であって２又は３）（Ｒ３はＣ９〜２４の炭化水素基；ｍ１及びｍ２は各々独立してオキシエチレン（ＥＯ）基の平均付加モル数であって０〜３０；但しｍ１とｍ２の合計値は１〜３０）【選択図】なし
CONCRETE ADMIXTURE
PROBLEM TO BE SOLVED: To provide a combination of a cement dispersant and a shrinkage-reducing agent having excellent their compatibility with each other, which enables both effects of a shrinkage reducing property and a water-reducing property to be synergistically improved.SOLUTION: There is provided a concrete admixture that comprises: a polycarboxylic acid-based cement dispersant composed of a polymer compound having a polyamide-polyamine chain; and a shrinkage-reducing agent for a cement composition, comprising compound A represented by formula [1] and compound B represented by formula [2] in a mass ratio of compound A:compound B=99:1 to 50:50. (In formula [1], Rand Reach independently represent a C1-4 alkyl group; and n represents an average number of moles of addition of oxyethylene (EO) groups and is 2 or 3). (In formula [2], Rrepresents a C9-24 hydrocarbon group; and mand meach independently represent an average number of moles of addition of oxyethylene (EO) groups and is 0 to 30, where a total value of mand mis 1 to 30).
【課題】収縮低減性と減水性の双方の効果を相乗的に向上できる、互いに相溶性に優れたセメント分散剤と収縮低減剤との組み合わせの提供。【解決手段】ポリアマイドポリアミン鎖を有する高分子化合物からなるポリカルボン酸系セメント分散剤と、式［１］で表される化合物Ａ及び式［２］で表される化合物Ｂを、化合物Ａ：化合物Ｂ＝９９：１〜５０：５０の質量比で含むセメント組成物用収縮低減剤とを含むコンクリート混和剤。（Ｒ１及びＲ２は各々独立してＣ１〜４のアルキル基；但し、ｎはオキシエチレン（ＥＯ）基の平均付加モル数であって２又は３）（Ｒ３はＣ９〜２４の炭化水素基；ｍ１及びｍ２は各々独立してオキシエチレン（ＥＯ）基の平均付加モル数であって０〜３０；但しｍ１とｍ２の合計値は１〜３０）【選択図】なし
CONCRETE ADMIXTURE
コンクリート混和剤
SUGA AKIRA (author) / KITAZATO SINGO (author) / SAITOH KANAME (author) / TAKAYAMA KATSUYUKI (author)
2015-08-24
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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