The mutual effect between electric corrosion of reinforcing bars and concrete cracks development caused by corrosion is investigated experimentally and analytically. In the experiment, a salt-water pool was set on the concrete cover of each specimen containing single round rebar for the implementation of electric corrosion. Then the radius losses around the corroded rebars were measured for the corrosion patterns. It was shown that the corrosion rates at various positions around the rebar were related to the crack width nearby. In the analysis, a numerical model based on the rigid body spring method combined with a truss network is proposed to simulate the coupled process by assuming the relation of current efficiency to the crack width. Satisfied agreement with the test results of non-uniform corrosion process and associated crack propagation is obtained using this model, offering a good tool to assist in the employment of the electric corrosion method.
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