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高强高性能混凝土高温爆裂机理研究进展

DOI: 10.6052/1000-0879-13-272, PP. 403-412

Keywords: 高强高性能混凝土,爆裂,高温,机理,模型

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Abstract:

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.

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