Behaviour of cement concrete at high temperature

Bulletin of the Polish Academy of Sciences. Technical Sciences

I. HagerCorresponding authorInstitute of Building Materials and Structures, Cracow University of Technology, 24 Warszawska St., 31-155 Kraków, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Institute of Building Materials and Structures, Cracow University of Technology, 24 Warszawska St., 31-155 Kraków, Poland

关键词: Keywords : concrete;    high temperature;    fire damage;    thermal strain;    transient thermal strain;    hot tested mechanical properties;    residual properties;   

DOI  :  10.2478/bpasts-2013-0013

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

The paper presents the impact of high temperature on cement concrete. The presented data have been selected both from the author’s most recent research and the published literature in order to provide a brief outline of the subject. The effect of a high temperature on concrete covers changes taking place in cement paste, aggregates, as well as the interaction of these two constituents, that result in changes of mechanical and physical characteristics of concrete. This paper presents the effects of a high temperature on selected physical properties of concrete, including colour change, thermal strain, thermal strains under load, and transient thermal strains. In addition, changes to mechanical properties are discussed: stress-strain relationship, compressive strength, and modulus of elasticity. Moreover, the phenomenon of explosive spalling and the main factors that affect its extent are analysed in light of the most recent research

【 授权许可】

Unknown