Evaluation on Water Vapor Pressure and Restrained Stress of Concrete by Ring-Type Restrained Condition

링형 강관 구속 조건에 의한 콘크리트의 수증기압력과 구속응력 평가

In this study, water vapor pressure and restrained stress were evaluated by ring-type restrained condition for compressive strength 60 and 80MPa concrete. Experimental results show that the 80MPa concrete has higher water vapor pressure and restraint stress than the 60MPa concrete, resulting in spalling occurrence. It is because, the higher the compressive strength of the concrete, the more dense the internal structure is formed.