L. Cheng, I. Maruyama,?A Prediction Method for the Corrosion Rate of Steel Rebar in Carbonated Mortar under Variable Environmental Conditions, J. Adv. Concr. Technol. 21 (2023) 611?630.
Here, we have proposed a new method to evaluate the corrosion reaction rate of reinforcing steel bars that occur in the carbonated mortar (concrete) based on the parametric study of the corrosion rate of carbon steel in the carbonated mortar with different temperatures, equilibrium RH, and different cover depths. It is pretty simple, because the corrosion of reinforcing steel bars is, in most cases, rate-limited by the electrical resistance of the mortar around the reinforcing steel bars. I think that the dependence of the electrical resistance of the mortar on temperature and humidity was evaluated rigorously in the experiment, and these data could be useful for you. The paper also includes case studies of three actual buildings, courtesy of the Japan Testing Laboratory and the local government. Recently, an evaluation of the remaining service life of RC buildings has been conducted, but in many cases, the evaluation has to be based on empirical formulas with a bit little scientific basis. I hope our results contribute to this business.