A PROBABILISTIC APPROACH FOR ESTIMATING CORROSION POSSIBILITY OF REINFORCED CONCRETE STRUCTURE CONSIDERING CRACK DEVELOPMENT
A PROBABILISTIC APPROACH FOR ESTIMATING CORROSION POSSIBILITY OF REINFORCED CONCRETE STRUCTURE CONSIDERING CRACK DEVELOPMENT
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Tiao Wang;Y. Luan
中科院分区：
文献类型：
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作者：
Tiao Wang;Y. Luan
氯化物侵入引起的钢筋腐蚀是暴露于氯化物侵蚀的钢筋混凝土（RC）结构的主要威胁之一。混凝土保护层的裂缝提供了氯离子进入的额外路径并促进钢筋腐蚀。由于缺乏适当的分析方法，目前关于裂纹发展对腐蚀可能性的影响的信息不充分。因此，本研究开发了一种快速数值方法（RNA）来研究开裂混凝土的氯离子侵入。可以考虑裂纹的发展和氯化物的结合效应。该方法通过与有限元分析的比较得到验证。基于这种方法，估计裂纹钢筋混凝土结构的腐蚀可能性变得可行。
Reinforcement corrosion induced by chloride ingress is one of the major threats of reinforced concrete (RC) structures exposed to chloride attack. The cracks of concrete cover provide additional paths of chloride ingress and facilitate the reinforcement corrosion. Current information regarding the influence of crack development on corrosion possibility is insufficient due to lack of proper analytical approach. On this account, a rapid numerical approach (RNA) is developed in this study to study the chloride ingress of cracked concrete. It could consider the crack development and chloride biding effect. This approach is validated through comparisons with the FEM analysis. Based on this approach, it becomes feasible to estimate the corrosion possibility of cracked RC structures.