| Title |
A Study on Corrosion Properties of Epoxy-Coated Reinforcing Bars by Corrosion Potential Tests |
| Abstract |
The purpose of this paper is to evaluate the corrosion properties of epoxy-coated bars by a rapid corrosion potential test. Tests are performed with simple lollipop specimens but simulating the conditions of the reinforced concrete structures attacked by chloride. Tests include the corrosion potemtial measurement of local damaged epoxy-coated bars and uncoated bars. The corrosion potential is measured for 30 days, and after 60 days the damage of bars is investigated.The corrosion potential of epoxy-coated bars is much more positive than that of uncoated bars. The epoxy-coated bars with larger hole than 6mm are corroded rapidly. The corrosion procedure has close relation with the corrosion potential change. Reinforcing bars in the concrete are rapidly corroded below the average corrosion potential of - 0.45V. No rust and blister spots on the reinforcing bars are found over average corrosion potential of - 0.3V. |