| 摘要 |
PROBLEM TO BE SOLVED: To prevent the frost damage to a cement composition comprising calcium aluminate, without causing deterioration of strength, regardless of temperature during production or pouring. ! SOLUTION: This invention provides a cement composition comprising calcium aluminate, the cement composition comprising, based on 100 pts.mass of kneading water, 1-3 pts.mass of air-entraining agent comprising abietic acid as an active ingredient, and 3-10 pts.mass of air bubbles stabilizer comprising polyacrylic acid or polyacrylic acid salt as an active ingredient. ! COPYRIGHT: (C)2015,JPO&INPIT |
