Analytical Estimation of Corrosion Rates of Reinforcing Bars in Concrete Based on Oxygen Consumption

Abstract

If the amount of oxygen diffusion is greater than the amount of oxygen consumed by oxidative corrosion of reinforcing bars in concrete, the reinforcing bars will continue to undergo oxidative corrosion, but using high quality concrete reduces the amount of oxygen diffusion, which in turn decreases the oxygen concentration and the corrosion rate. In this research, we propose an analytical method to estimate corrosion of reinforcing bars in concrete considering the amount of oxygen consumed by corrosion of reinforcing bars. From the results of case study calculations, corrosion of reinforcing bars may be changed from the oxidative corrosion state into the low oxygen corrosion state in high quality concrete.