Proposal of Estimation Method of Steel Corrosion Rate in Concrete Considering Temperature Changes
Tsunehiko MITAMURA and Shinichi MIYAZATO
Abstract:In this study, the technique which estimated the change of corrosion rate of existing reinforced concrete under the temperature unsteadily changes was proposed. Therefore, in 2nd chapter, the change of corrosion rate was experimentally investigated using the mortar specimen exposed under the environment where the temperature changed. Next in 3rd chapter, the method for estimating internal temperature of mortar specimen and corrosion rate of the rebar from the temperature changes was constructed. Additionally in 4th chapter, the case which utilized this estimation method for corrosion survey of existing reinforced concrete was imagined. As a result, 1) the technique which estimated the corrosion rate under the temperature changes was able to be constructed. 2) By using this technique, it was clarified that quantity of rust in the any period could be estimated, if corrosion rate of existing reinforced concrete is investigated only at the once. Key Words:Reinforced concrete，Maintenance，Chloride induced corrosion，Corrosion rate，Estimation method，Temperature changes，Case study