As a result of evaluating the spalling properties using a restrained ring-type concrete specimen, in the case of rapid heating, the water vapor pressure rapidly rise and the surface spalling is repeated. In the case of low-speed heating, The water vapor pressure accumulated in the concrete exceeded the limit, and explosive spalling occurred inside.

• 백재욱(충남대학교 건축공학과, 석사과정) | Baek, Jae Uk
• 김규용(충남대학교 건축공학과 교수, 공학박사) | Kim, Gyu Yong Corresponding author
• 윤민호(충남대학교 건축공학과, 박사과정) | Yoon, Min Ho
• 황의철(충남대학교 건축공학과, 박사과정) | Hwang, Eui Chul
• 남정수(충남대학교 건축공학과 조교수, 공학박사) | Nam, Jeong Soo