高石粉含量机制沙对混凝土性能影响的试验研究

Experiment Research on Influence of High Stone Powder Content Machin-made Sand to Concrete Performance

摘要: 为了能够合理地利用生产机制沙的副产物石粉，通过实验分析了3种水灰比（0.45、0.55、0.65）、6种石粉含量（5%、10%、15%、20%、25%、30%）、28 d龄期的混凝土的抗压强度和抗渗性能。试验结果表明：适当的石粉含量能提高混凝土的抗压强度和抗渗性能，对于中低强度机制沙混凝土，水灰比为0.45，0.55和0.65时石粉含量应分别控制在9%，14%和10%左右。

Abstract: In order to be able to reasonably use the by-product powder of machine-made sand， through the experiment， it analyzes three kinds of water cement ratio （0.45， 0.55， 0.65）， six kinds of stone powder content（5%，10%，15%，20%，25%，20%），the compressive strength and impermeability of the age of 28 d concrete performance.Experimental results show that the appropriate stone powder content can improve the compressive strength and impermeability of concrete performance，for the middle and lower strength machine-made sand concrete， water cement ratio 0.45， 0.55 and 0.65 stone powder content should be controlled at 9%，14%and 10% respectively.