| 摘要 |
PURPOSE:To obtain rapidly hardening mortar or concrete which is one prepared by kneading cement with an aggregate, a rapidly hardening admixture, a setting adjustor composed of an irritant and a retarder and water, has no problems of reduction in durability by alkali aggregate reaction and shows excellent strength development. CONSTITUTION:Lithium phosphate is used as an irritant. Lithium phosphate will not cause alkali aggregate reaction and consequently has no problems of reduction in durability of freezing damage resistance, etc., resulting from alkali aggregate reaction. The objective rapidly hardening mortar or concrete has excellent early development of strength and can be made into a high- strength hardened material in a short period of time. |
