| 摘要 |
PROBLEM TO BE SOLVED: To provide high strength mortar which reduces pre-curing period, does not need special curing conditions nor special curing facilities and has a large initial flow, excellent compressive strength and flexural strength and low dry shrinkage. SOLUTION: The high strength mortar is obtained by mixing cement, pozzolanic fine powder, fine aggregate, a water-reducing agent, a reinforcing fiber, a shrinkage-reducing agent, an air content-adjusting agent and water. The mortar has a fluidity of≥250 mm at the initial flow, a compressive strength of≥150 N/mm<SP>2</SP>and a flexural strength of≥20 N/mm<SP>2</SP>after steam curing and a dry shrinkage in terms of the ratio of change in the length of≤50×10<SP>-6</SP>. Thus, pre-curing period is shortened. Special curing conditions and special curing facilities become unnecessary. A large initial flow, excellent compressive strength and flexural strength and a low dry shrinkage are achieved. COPYRIGHT: (C)2006,JPO&NCIPI |
