[Purposes]The corrosion cracking of reinforced concrete members caused by steel corrosion is an important factor in the degradation of concrete structures.Therefore,it is necessary to explore the mechanism of corrosion cracking.[Methods]Based on the artificial electrification corrosion test,the cor-rosion expansion cracking calculation of reinforced concrete beams was carried out,and the corrosion ex-pansion cracking corrosion depth of corroded reinforced concrete beams was calculated to obtain the cor-rosion expansion crack width value.[Findings]The research results indicate that the calculation formula for rust-induced crack width,considering the corrosion current density and electrolyte concentration,can effectively predict the width of rust-induced cracks in reinforced concrete beams.[Conclusions]The mechanism of rust-induced crack expansion in reinforced concrete beams is highly complex,and the crack width is influenced by various factors.The crack calculation formula modified based on the cor-rosion current density and electrolyte concentration provides an effective approach for crack research.
关键词
钢筋混凝土梁/钢筋锈蚀/锈胀开裂/厚壁圆筒理论
Key words
reinforced concrete beam/steel bar corrosion/corrosion expansion and cracking/thick-walled cylinder theory
维普
万方数据