C50机制砂高性能混凝土配合比优化试验研究

Optimization Research of Mix Design in C50 High Performance Manufactured Sand Concrete

伴随基础设施建设高速发展和河砂资源的日益短缺,机制砂混凝土的应用逐步普遍,既有研究表明机制砂混凝土适当增加石粉掺量是有利的。基于此成果,此研究通过对比试验,获得了机制砂混凝土中粉煤灰及石粉合理的掺量,从而在保证机制砂混凝土性能满足要求的情况下,减少制砂过程中所产生的多余石粉排放,降低混凝土成本。

With the rapid development of infrastructure and the increasing shortage of river sand resources,the application of mechanism sand concrete is becoming more and more common.Some studies show that it is beneficial to increase the content of fly ash and stone powder in manufactured sand concrete.Based on that,this study determines the reasonable content of fly ash and stone powder in manufactured sand concrete through contrast experiment,which can reduce excess stone powder emissions during sand production and reduce the cost of concrete under the condition that ensures manufactured sand concrete to meet requirements.