FRACTURE MECHANICS ANALYSIS FOR CONCRETE CRACKING PROCESS DUE TO RUST EXPANSION
According to the analysis based on linear elastic fracture mechanics theory and existing research results of elastic mechanics, the relationship between corrosion expansion force and crack opening displacement before the rust expansion crack reach concrete surface was established in this paper. Meanwhile, concrete fracture toughness and its influencing factors were analyzed combined with double-K fracture criterion. The analysis results indicate that appropriate increase of concrete cover thickness, selection of small-diameter steel and increase of concrete strength are beneficial to improve the anti-corrosive-cracking ability of reinforced concrete. The theoretical analysis result agrees well with the corrosion expansion experimental result of a reinforced concrete specimen.
Concrete fracture mechanics analysis crack opening displacement fracture toughness
Jun Wei Long-Fei Cao Zhen-Yu Wang Xiao-Chun Liu Yue Xu
School of Civil Engineering and Architecture,Central South University,Changsha 410075,P. R. China School of Highway Engineering,Changan University,Xian 710064,P. R. China
国际会议
长沙
英文
706-710
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）