| abstract |
(57) [Abstract] [Problem] Based on inexpensive material composition, high fluidity, No material separation or bleeding occurs while having the expansion performance.Also, a pot life of 30 minutes or more is secured, and a compressive strength of about 2 N / mm2 is developed in 3 hours. To provide a cement admixture, a cement composition, and a grout material used in a place where shrinkage is required. SOLUTION: A cement admixture containing calcium aluminate, gypsum, an expanding material, and a clay mineral, a cement, a fine aggregate, a cement composition containing the cement admixture, and containing the cement composition And a grout material. |