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通过对砂率为35%、39%、43%、47%、51%的煤矸石粉混凝土进行试验,研究掺加煅烧煤矸石粉的情况下,砂率对混凝土和易性及7、28、60 d抗压强度的影响。煤矸石粉取代水泥掺入混凝土中,取代率为20%。研究结果表明:与基准组混凝土相比,砂率对煤矸石粉混凝土和易性及强度的影响趋势较平缓;煤矸石粉掺入混凝土后混凝土的整体强度降低,但能一定程度改善混凝土的保水性及黏聚性。
Through the experiment of 35%, 39%, 43%, 47% and 51% sand coal gangue concrete, the effect of sand ratio on the workability of concrete and 7,28, 60 d compressive strength. Gangue powder instead of cement mixed with concrete, the replacement rate of 20%. The results show that the influence of sand rate on the workability and strength of coal gangue concrete is comparatively gentle compared with the baseline group concrete. The overall strength of concrete after coal gangue powder is mixed with concrete is reduced, but the water holding capacity of concrete can be improved to a certain extent Sex and cohesion.