| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of easily measuring a drying shrinkage rate (length change rate) of hardened concrete in advance based on water content in ready mixed concrete, and a method of assessing quality of ready mixed concrete based on the drying shrinkage rate. <P>SOLUTION: In the method of measuring a drying shrinkage rate of hardened concrete, the water content (x) in ready mixed concrete is measured, and the length change rate (y) of 26-week-old hardened concrete is obtained based on the following formula [1]; the method of assessing quality of ready mixed concrete is based on the drying shrinkage rate: y=-4.60x+174 [1]. <P>COPYRIGHT: (C)2012,JPO&INPIT |
