Abstract
In this paper, the two models are proposed so as to estimate corrosion rate of reinforcing bar embedded in concrete due to neutralization. In order to clarify mechanisms of reinforcing bar corrosion, the experiment that corrosion of reinforcing bar due to concrete neutralization under alternate drying and wetting conditions was carded. Measured corrosion potential, corrosion area ratio and specific resistance of concrete were used in these models. Through this analysis, it is confirmed that corrosion of reinforcing bar is oxygen control in high temperature and high humidity, specific resistance control of concrete in low temperature and low humidity. The amounts of corrosion on the theoretical analysis not only show the same tendency, but also show almost the value compare with experimental results. It is confirmed that these corrosion models of reinforcing bar is useful for calculation of corrosion amounts.
