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常规施工雨水、污水管道窨井时,常遇到窨井埋设较深、地下水位较高等问题。底板混凝土浇捣时,又抽水、又浇捣,质量很难保证,等混凝土强度达到60%,才能砌筑井壁墙,施工期长,质量难保证。我们在一条600m污水管施工时,采用C25
Routine construction of rainwater, sewer pipe wells, they often encounter well buried deep, higher groundwater levels and other issues. Floor pouring concrete pounding, and pumping, and pouring pounding, the quality is difficult to guarantee, such as the concrete strength of 60%, in order to masonry well wall, the construction period is long, the quality is difficult to guarantee. We use C25 in a 600m sewer construction