中文摘要：

高强高性能混凝土已得到广泛应用,然而高温或火灾下的性能衰减与爆裂成为制约其应用的瓶颈问题,高温爆裂破坏机理尚不清楚.该文对国内外高温或火灾下高强高性能混凝土爆裂机理的研究进行综述,阐述了蒸汽压、热应力、热开裂3种热爆裂机理及其影响因素,分析了目前研究存在的困难与挑战.提出建立一个以蒸汽压致爆机理为主,热应力和热开裂机理为辅的多因素耦合的爆裂模型来定量分析高强高性能混凝土的高温爆裂机理.

英文摘要：

High strength and high performance concrete （HSC/HPC） enjoys a wide application. However, the performance degradation and the thermal spalling under high temperature or fire is a bottleneck problem in its applications. Especially, the spalling mechanism is an important issue demanding a thorough study. The study of the explosive spalling mechanism of high strength and high performance concrete under high temperature or fire is reviewed in this paper, with a focus on three kinds of spalling mechanism： the vapor pressure, the thermal stress and the thermal cracking and related influencing factors, the difficulties and challenges. A multi-factor coupling spalling model is established with the steam pressure as the main factor, and the thermal stress and the thermal cracking as the secondary factors, and the high temperature spalling mechanism of HSC/HPC is quantitatively analyzed.