건설재료시공학연구실

Building material & construction lab.

Abstract

In this study, polypropylene fiber reinforced ultra-high strength concrete restrained by steel-ring was evaluated thermal stress and water vapor pressure. As a result of experiment, it wsa confirmed that water vapor pressure was relaxed by fiber reinforcement. However, the spalling occured due to the larger restrained stress than the plain specimen. Therefore, it is considered that the thermal stress should be considered together with the effect of water vapor pressure on the spalling