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Many researches have been carried out on the influence of cracks and corrosion rate. There are two conflicting viewpoints on whether the crack width limits are objectively valid to reduce the corrosion rate; One is thatwider crack accelerate corrosion rate, while another opposing opinion is that the crack width does not directly affect the corrosion rate. Thus, the different understanding of the relation of cracks and corrosion reflects on worldwide standards and codes of practice. According to the majority of existing experimental results, the corrosion rate seems to be independent of cracking width. However, there are no sufficient experimental results for explaining the effect of cracking numbers, cracking distance and other influencing factors on corrosion rate. In this case, this paper is carried out on the analysis of crack theory and corrosion mechanism to determine their relations in the practical situation. One prospective experimental model is provided by applying Half-cell potential measurement and Galvanic current measurement are established to further explore the relative influencing factors that may affect the corrosion rate.

Towards the design of a Specimen to Investigate Chloride-induced Corrosion Rates in Cracked Concrete Members