| 摘要 |
PROBLEM TO BE SOLVED: To provide a cement admixture capable of exhibiting excellent cement dispersibility, shortening solidification time of cement and a cement composition and suppressing viscosity of a cement composition, and a cement composition using the same.SOLUTION: The problem is solved by using a cement admixture where a first copolymer comprising a constitutional unit having an alkenyl group having a certain number of carbon atoms or a salt thereof (A), a second copolymer comprising a certain carboxylic acid ester-based constitutional unit or a salt thereof (B), a sulfonic acid-based compound (C) and an oxycarboxylic acid or sugar (D) are mixed. |
