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

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.