大理岩骨料经过破碎后石粉含量达到40%以上,经过处理后使人工砂中保留了20%左右的石粉,控制大理岩人工砂中石粉含量和细度模数的波动范围是很困难的,本文主要探讨人工砂细度模数和石粉含量如何影响混凝土性能,人工砂的石粉含量根据工程的具体设计要求可控制的范围如何确定等问题。 After the marble aggregate is crushed, the content of the stone powder reaches more than 40%. After the treatment, about 20% of the stone powder is retained in the artificial sand, it is very difficult to control the fluctuation range of the stone powder content and the fineness modulus in the marble artificial sand. This paper mainly discusses how the artificial sand fineness modulus and the content of stone powder affect the concrete performance. The content of stone powder in the artificial sand can be determined according to the specific design requirements of the project.