Abstract
The concrete cracking has a significant influence on the structural performance and durability assessment, making it important to clarify the concrete cracking process due to reinforcement corrosion. This work presents phase-field modeling to describe the characteristics of concrete damage induced by non-uniform corrosion of reinforcement. First, phase-field fracture formulations are presented and the phase-field regularised cohesive zone model with Cornelissen softening law is considered. Secondly, the time-dependent non-uniform corrosion model is established and verified by the available experimental results. A parametric analysis is conducted to investigate the effect of the concrete cover depth, rebar diameter, and aggregate area fraction on the concrete crack pattern and width. The results show that the concrete cracking process can be described by the phase-field model and the crack width increases with the increase of concrete cover depth and rebar diameter.
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