This article describes the selection of constituent materials and the choice of mix design for C50 floor, as well as its supply, transportation, vibration, consolidation, curing and quality control.

介绍了寒冷地区C50砼地面的原材料选择，配合比选定，砼供应及运输、浇捣、养护及质量控制。

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By reasonable pouring, mix proportion optimizing, effective temperature control and reasonable curing, the concrete quality of spillway tunnel is guaranteed and no crack found.

通过合理选择浇筑措施、优选配合比、有效的温度控制以及合理的养护，目前，泄洪洞各方面质量均满足要求。且：禾发现裂缝。

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