掺粉煤灰复合超细粉高性能混凝土的性能

Properties of HPC with Pulverized Fly Ash Composite

对掺粉煤灰复合超细粉砂浆和高性能混凝土的性能进行了研究 ,结果表明 ,以 3 0 %～ 70 % (质量分数 )的粉煤灰复合超细粉等量取代水泥 ,可使水泥浆体的凝结时间延长 ,并能配制出C70～C80的高性能混凝土 。

The fluidity and compressive strength of HPC with pulverized fly ash composite(PFAC) are presented. The experimental results indicate that PFAC can improve the fluidity and compressive strength of concrete at 30%～70%(by mass) replacement of cement. A high performance concrete with PFAC had been prepared with a large slump, high longterm compressive strength, low slump loss, and low drying shrinkage ratio. The replacement of cement by PFAC in the range of 30%～70% can not only improve the properties of concrete, but also have positive the environmental effect.