In Korea, for about 2 months from late July to early September, it is expected that the average temperature will exceed 25 ℃, therefore, construction shall be conducted with hot weather concrete. In the case of the concrete placed at this time, if proper curing quality control measures are not established, problems such as plasticity, drying, shrinkage, and crack are caused. Therefore, in this study, an optimum method is proposed by mutually comparing the temperature history characteristics of the slab concrete in accordance with the change of surface coated curing material type.