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本文研究了机制砂的石粉含量、细度模数、砂率三个因素对机制砂应用于混凝土拌合物中,对拌合物性能和强度的影响。结果表明,适量石粉可以提高混凝土的工作性、强度、耐久性;机制砂的细度模数宜控制在2.4~3.2之间;砂率的选用范围宜在36%~44%之间。
In this paper, the influence of the sand content, the fineness modulus and the sand rate on the performance and strength of the mixture were studied. The results show that the appropriate amount of stone powder can improve the workability, strength and durability of concrete. The fineness modulus of sand should be controlled between 2.4 and 3.2. The selection range of sand rate should be between 36% and 44%.