An experimental study of the cathodic polarization of the reinforcement in chloride contaminated concrete

Oleiwi, HM; Wang, Y; Curioni, M; Augusthus Nelson, L; Chen, X; Shabalin, I

Abstract

This paper reports an experimental study on the influence of chloride contamination on the polarization resistance, concrete resistivity, and the potential shift of concrete reinforcement under different cathodic protection (CP) current densities. Reinforced and non-reinforced concrete specimens of varied chloride contents and exposed to ventilated condition at 50±5% relative humidity and room temperature of 20±3°C were investigated. Five levels of cathodic current densities of 5, 10, 15, 20 and 25 mA/m2 were applied during the cathodic polarization. A new correlation between the concrete resistivity and reinforcement corrosion rate was obtained and compared with previous work. The effect of concrete resistivity and polarization resistance on the reinforcement potential shift were also discussed. In the last, based on the findings of the research, some useful conclusions can be drawn.

Citation

Oleiwi, H., Wang, Y., Curioni, M., Augusthus Nelson, L., Chen, X., & Shabalin, I. (2017, September). An experimental study of the cathodic polarization of the reinforcement in chloride contaminated concrete. Presented at 20th International Corrosion Congress & Process Safety Congress (EUROCORR 2017), Prague

• Presentation Conference Type: Other
• Conference Name: 20th International Corrosion Congress & Process Safety Congress (EUROCORR 2017)
• Conference Location: Prague
• Start Date: Sep 3, 2017
• End Date: Sep 7, 2017
• Publication Date: Sep 3, 2017
• Deposit Date: Oct 12, 2017
• Publicly Available Date: Sep 7, 2018
• Book Title: European Corrosion Congress (EUROCORR 2017) and 20th International Corrosion Congress and Process Safety Congress 2017: Corrosion Control for Safer Living
• ISBN: 9781510862500
• Publisher URL: http://www.prague-corrosion-2017.com/
• Additional Information: Event Type : Conference; Funders : Iraqi Ministry of Higher Education and Scientific Research Scholarship Program