以超高泵送C40混凝土为研究对象,通过总胶凝材料用量、硅灰掺量、水胶比等参数调整进行浆体流动度与分层度对比试验,确定总胶凝材料用量、水胶比以及硅灰在超高泵送C40浆体中的作用,进而在混凝土配合比中通过硅灰掺量对比试验,确定工程应用配合比。总胶凝材料用量450kg,硅灰掺量2%,水胶比0.32的混凝土,泵送高度250m,泵送平均压力14.1MPa,超高泵送施工顺利。 Taking C40 concrete with super-high pumping as the research object, the fluidity and the degree of stratification of the slurry were compared by adjusting the total amount of cementitious material, the amount of silica fume, the water-cement ratio and other parameters to determine the total amount of cementitious material, And silica fume in ultra-high pumping C40 slurry role, and then in the concrete mix through the silica fume content comparison test to determine the engineering application mix. The total amount of cementitious material 450kg, silica fume content of 2%, water-cement ratio of 0.32 concrete, pumping height 250m, pumping average pressure 14.1MPa, high pumping construction smoothly.