Concrete Mixture and Thermal Stress of Preventing Thermal Cracking by Hydration Heat in Mass Concrete Structure

수화열에 의한 온도균열 방지를 위한 매스콘크리트 구조물의 콘크리트 배합과 온도응력 제어방안

The method for preventing thermal cracks is necessary in mass concrete structures. So various experiments were carried out for the controls of thermal cracks and we substituted fly ash for a quarter of cement quantity in order to decrease hydration heat. The maximum block size is determined by numerical analysis as well. Hydration heat and thermal stress were measured through various gauges and analysis considering the steps of concrete placement were carried out. It was found from this study that the appropriate block size was able to be determined properly by numerical analysis.