| abstract |
(57) [Summary] Disclosed are an admixture for enhancing initial strength and a cement composition. In this admixture, a) Formula (I) [Wherein R 1 ＲR 5 A; R 2 ＝ R 5 A, R 5 OH, —OR 6 , —R 6 , —H or Z; R 3 5R 5 A, R 5 OH, —OR 6 , -R 6, -H or Z; a = -COOH or -SO 3 H (or a salt thereof); Z = (1) R 4 = alkylene linking group, R 5 = C 1 -C 10 alkylene, R 6 = C 1 -C 10 alkyl, and at least one of R 2 or R 3 is R 5 A]; Containing compounds, and b) Formula (II) Wherein R 7 ＲR 5 OH; R 8 ＲR 5 , —R 5 OH; R 9 、 —H, R 5 OH. Incorporate ingredients for |