12 degree weather, should the cast-in-place floor be watered?

The cast-in-place floor slab should be watered in the weather of 12 degrees.

1. The curing of ordinary cement varieties in general environment should be started after concrete pouring 12h- 18h. The curing time shall last for 2 1d-28d. Concrete can be watered and cured after initial setting.

2, the initial setting time of special concrete shall not be less than 45 minutes. The initial setting of concrete is generally 6 ~ 10h, the final setting is/kloc-0 ~14h, the initial setting in winter is generally 12 ~ 16h, and the final setting is 16 ~ 20h. The setting time of concrete is related to the materials used, especially the admixture, which can be adjusted according to the engineering needs.