本文在优选高性能PFA混凝土配合比的基础上，采用了较少的水泥用量(C≤165 kg/m3). PFA掺量达70%以上(等量取代)，配制出高工作性(坍落度:24 mm)的80 MPa以上的高性能混凝土。试验结果表明:高性能PFA混凝土具有如下特点:高流态、低坍落度损失、高弹模、低干缩、高耐久及高绿色度等。并在长沙铁道学院学生三食堂大型坡度屋面板工程中应用成功。

In this paper，based on the optimal selection of the mix proportion.a kind of high-performance PFA concrete，with a little dosage of cement (C≤165 kg/m3)，the PFA content being above 70%,HPC with high workability (slump:24 cm)whose strength is above 80 MPa，has been obtained. The experimental results have been indicated that the High-Performance PFA Concrete has such advantages as high fluidity，small percentage loss of slump，high modulus of elasticity，small drying shrinkage,high durability,high Green and so on. Its application has been proved successfully in abrupt slope roof structure in student's third dining hall of Changsha Railway University.