1 Choose appropriate maintenance strategies and methods as soon as possible. On the basis of timely maintenance as far as possible, there is more water outside the concrete, which can completely avoid evaporation, reduce shrinkage and ensure the orderly development of external hydration of concrete. For the newly poured concrete with a series of curing, it is necessary to take curing measures immediately after the concrete is formed outside and the external water film does not disappear. However, in the curing process, the exterior of the formed concrete cannot be polluted or damaged, so it is necessary to choose the appropriate curing strategy and the best curing period.

2. Increase the relative humidity of the air. Increasing the relative humidity of the air can make the water outside the concrete evaporate less quickly. It is not difficult to increase the relative humidity of the air by spraying water mist on the windward side and around the newly poured concrete, and the capital investment is not high, which is one of the more suitable methods. An extremely convenient spraying strategy can choose plastic hoses with pinholes to be erected around and upwind of the newly poured concrete construction site, and then pour water with appropriate water pressure to form pinhole spraying. In addition, plastic film can be covered outside the concrete without initial setting to prevent water loss caused by strong wind and concrete evaporation.

3. Reduce the temperature of concrete. Reducing the temperature of concrete properly can reduce the plastic shrinkage caused by the evaporation of water outside the concrete and prevent the occurrence of hot cracks. In addition, it can also reduce the temperature of hardened concrete and reduce the possibility of shrinkage cracks caused by temperature shrinkage of concrete. In the process of cooling, the following strategies can be chosen: to prevent the fresh concrete from being directly irradiated by the sun, so as to effectively reduce the environmental temperature of the road concrete surface; Take appropriate measures to reduce the temperature of a series of components of concrete and control the temperature of fresh concrete below 32℃.