| 摘要 |
PROBLEM TO BE SOLVED: To provide an admixture for a alumina cement capable of freely adjusting a pot life from mixing to construction, quickly finish curing, without losing initial strength after hardning, nor lowering acid resistance, and an alumina cement composition containing the admixture which is excellent in initial strength and acid resistance. SOLUTION: The admixture for alumina cement is containing inorganic salt releasing Li ion, the solubility to >=pH 6 water of which is >=10, and preferably containing oxycarbonic acids (salts) and/or a cement dispersant. The alumina cement composition is obtained by adding the admixture to the slurry which is obtained by adding water to either alumina cement containing the admixture or solid mixture containing alumina cement. |
