English：

To accelerate the hardening and strength growth of the newly poured concrete, it is necessaryto conserve the concrete so that the hydration reaction of the concrete can continue under the appropriatehumidity and temperature conditions and realize the continuous growth of the concrete strength. Atpresent, the traditional curing method in our country is to carry on the artificial watering curing ofconcrete members at any time according to experience. However, this kind of curing method is easy tocrack the concrete members because the curing is not timely or the water evaporates too fast, which hasan impact on the strength of concrete and the safety of the structure. In order to solve the influence ofdelayed maintenance and subjective experience, an intelligent maintenance system for concrete structuremaintenance was developed based on PLC automatic control and sensor technology. Firstly, spray intervaltime of curing system is determined according to the law of concrete hydration heat release. Secondly,combined with the on⁃site monitoring temperature and humidity, reasonable adjustment of automaticspraying interval time. Finally, through the practical application in the construction site, it shows that thesystem can effectively improve the maintenance quality of concrete components and reduce theconstruction cost.