石粉含量对机制砂混凝土性能的影响

试验研究了石粉含量对机制砂混凝土和易性、力学性能、干缩性能和抗渗性能的影响.结果表明,机制砂中石粉含量10％～15％能改善混凝土的和易性和力学性能,减小混凝土的干缩,提高混凝土的抗渗性.

Effects of Stone Powder Content on Manufactured-Sand Concrete

The effects of different dosages of stone powder on workability,mechanics performance,drying shrinkage and impermeability of manufactured-sand concrete are studied through test.The results indicate that workability and mechanics performance of concrete are both improved,the drying shrinkage of concrete is decreased,the impermeability of concrete is greatly increased when content of stone powder in manufactured-sand is within 10%～15%.