CEMENT ADMIXTURE AND CEMENT COMPOSITION

摘要

PURPOSE: To obtain a cement admixture and a cement composition used in an engineering work and construction industry. CONSTITUTION: This cement admixture consists of essentially of amorphous calcium aluminate silicate having 2.7-3.5 CaO/Al2 O3 molar ratios, having the contents of 6-15wt.% SiO2 and being <=40μin the max. particle diameter. By using this cement admixture especially as a grouting material, the cement composition excellent in realization of the strength and in material separation resistance is obtained.