Advances in studies on concrete durability and countermeasures against freezing-thawing effects  

作　　者：WuJian Yan FuJun Niu XianJun Zhang Jing Luo GuoAn Yin 

机构地区：[1]State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences [2]Key Laboratory of Loess Earthquake Engineering,China Earthquake Administration [3]Engineering Management Center of China Railway Corporation

出　　处：《Research in Cold and Arid Regions》2014年第4期398-408,共11页寒旱区科学（英文版）

基　　金：supported by the National Key Technology Support Program (No. 2014BAG05B05);the Basic Scientific Research Business from Institute of Earthquake Science, CEA (No. 2014IESLZ01)

摘　　要：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 are summarized, and countermeasures to improve concrete durability in freezing-thawing circumstances are presented. This work provides valuable references for future engineering constructions in cold regions.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 are summarized, and countermeasures to improve concrete durability in freezing-thawing circumstances are presented. This work provides valuable references for future engineering constructions in cold regions.

关 键 词：concrete durability freezing-thawing effect mechanical properties COUNTERMEASURES cold region 

分 类 号：TU528[建筑科学—建筑技术科学]