This experimental study aimed to clarify some influence of several initial curing conditions to give the adhesion unity of concrete and finishing mortar. In this experiment, the initial curing conditions were set six types of environment conditions. The six types of environment were standard curing, wind and standard curing, hot and wet curing, freeze and dry curing, hot and moisture curing, and, freeze fusion repetitions curing. Each initial curing gave for finishing mortar when it applied on concrete specimens. After each initial curing finished, these each specimen was burdened two severe environments which were sunshine sprinkling repetitions or freeze fusion repetitions. And then, these specimens were measured distortion and change of adhesive strength occurred to them.
