Advances in studies on concrete durability andcountermeasures against freezing-thawing effects |
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| Authors: | WuJian Yan FuJun Niu XianJun Zhang Jing Luo GuoAn Yin |
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| Affiliation: | 1. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering ResearchInstitute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China2. Key Laboratory of Loess Earthquake Engineering, China Earthquake Admin;State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering ResearchInstitute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;Engineering Management Center of China Railway Corporation, Beijing 100038, China;State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering ResearchInstitute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering ResearchInstitute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China |
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| Abstract: | This paper is a meta-analysis of recent domestic and foreign research on freezing-thawing effects on concrete durability.The main theories on the mechanisms of freeze-thaw damage to concrete are introduced: the hydrostatic pressure theory,the osmotic pressure theory, the critical water saturation degree theory, the dual mechanism theory, and the micro-ice-crystal lens model theory. The influence laws of freezing-thawing on the mechanical properties of concrete aresummarized, and countermeasures to improve concrete durability in freezing-thawing circumstances are presented. Thiswork provides valuable references for future engineering constructions in cold regions. |
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| Keywords: | concrete durability freezing-thawing effect mechanical properties countermeasures cold region |
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