The specimens cured by several simple adiabatic tanks were examined for the quality control of strength in structure of 150MPa concrete. It has been understood that the tank where 2 × 5 specimens are arranged is good as a result of the experiment. Then, it was used for the quality control of actual building operations. As a result, specimen cured by selected tank was able to administrate the strength in structure of 150MPa concretes appropriately. Moreover, quality control results of 150MPa concrete were excellent.
