| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cement composition excellent in workability, capable of developing high initial strength and capable of imparting set cement with a small dimensional change. SOLUTION: This cement composition comprises (A) a hydraulic composition which comprises a burned product obtained from one or more kinds of raw materials selected from burned ash of municipal refuse and burned ash of sewage sludge and comprising 10-40 wt.% of 11CaO.7Al2O3.CaCl2 and one or more kinds selected from 3CaO.SiO2, and 2CaO.SiO2, and gypsum, (B) blast-furnace slag and (C) slaked lime. A method for producing set cement comprises casting and curing slurry obtained by kneading the above cement composition with water.</p> |
