1. In order to ensure that the newly poured concrete has suitable hardening conditions and prevent cracks and internal cracks caused by early drying shrinkage, after the completion of mass concrete pouring, it should be covered and watered within 12 hours. For concrete with impermeability requirements, the curing time of concrete mixed with ordinary portland cement shall not be less than 14 days; The curing time of concrete mixed with slag cement and pozzolanic cement shall not be less than 12 days.

2. Covering curing is the most commonly used method of heat preservation and moisture retention. The main measures are: 1. Covering curing should be started after initial setting, and watering should be started after final setting (12 hours later). Covering, straw, rotten straw mats, bamboo curtains, sacks and woven cloth should be started. Watering tools can be water pipes, buckets and other tools to ensure the wettability of concrete. After pouring is completed, it shall be cured within 12h; Before the concrete strength reaches C 12, it is forbidden for anyone to walk on it, install formwork supports, and do not hit or chop on it.