砂含泥量对泵送混凝土性能的影响

In this paper, preparation C40 pumping concrete with different mud sand, and contrast of different mud sand on pumping concrete througt the determination of concrete mixture slump, slump loss, gas content, pressure bleeding rate, electric flux and different age strength. The test results show that, containing a small amount of clay content ( < 7% ) of sand on concrete workability is improved with no mud divided clean compared to sand, and the concrete compressive strength and resistance to chloride ion penetration increased slightly, mud content is too large (≥7% ) will significantly reduce the concrete mixture of liquidity, 28d compressive strength and resistance to chloride ion permeability. Therefore, the amount of sludge containing sand can be used for high strength pump concrete.