| 摘要 |
PROBLEM TO BE SOLVED: To provide a dry shrinkage reducing method of concrete capable of easily reducing the dry shrinkage of concrete. SOLUTION: The dry shrinkage reducing method of concrete has a selecting step of selecting coarse aggregate with a water-absorbing ratio of 1.5 mass% or below, a mixing step of mixing cement, fine aggregate, the coarse aggregate, and water to obtain a mixture such thatαandβsatisfy the following equation (1)α/β≤0.022 ... (1) hereαis the maximum settlement amount (mm) of the coarse aggretate,βis unit amount of the coarse aggregate (kg/m<SP>3</SP>), a hardening step hardening the mixture to obtain the concrete. COPYRIGHT: (C)2011,JPO&INPIT |
