Numerical model on precast prestressed concrete (PC) hollowcore slabs using 11.3 mm diameter 7-wire stand was developed based on finite element analysis. In order to validate the modelling, previous experiment results with respect to prestressed solid concrete slabs were used and compared throughout the course of fire exposure. In addition to, the fire performance of hollowcore slabs with different aggregate types, moisture contents and compressive strength of concrete was investigated. As a result, it can be seen that the type of aggregates and moisture contents used in hollowcore slabs can affect the fire performance as well as temperature developments.

• 민정기(정회원, 한국건설생활환경시험연구원 방재기술평가센터 선임연구원) | Min, Jeong-Ki 교신저자
• 우영제(정회원, 한국건설생활환경시험연구원 방재기술평가센터 책임연구원) | Woo, Young-Je