| 摘要 |
PROBLEM TO BE SOLVED: To provide a cement admixture having both excellent water-reducing performance and slump retention performance even in a cement composition containing fly ash, slag or the like, and having a small used amount and high economical efficiency.SOLUTION: A cement admixture contains as essential components, two kinds of polymers, namely, a polymer (A) and a polymer (B) each having a specific structure. |
