细集料掺配级配在混凝土中的应用研究

The application research on fine aggregate blending and gradation in concrete

根据砂浆的流变性能,对细集料的级配筛分、掺配比及砂浆流动度等进行了试验研究,并依据特细砂的掺配比情况,调整了混凝土的原料配合比,分析了混凝土的工作性能和抗压强度,提出了机制砂与特细砂掺配后的级配要求,可有效解决机制砂级配不良的问题。

According to the rheological properties of mortar,this paper made test research on fine aggregate gradation screening,blending propor-tion and mortar fluidity etc. ,and according to the mixing situation of fine aggregate,adjusted the raw materials proportion of concrete,analyzed the working performance and compression strength of concrete,put forward the graduation requirements after mechanism sand and fine sand blending,could effectively solve the bad problems of mechanism graduation.