Improvement of cathodic method inhibit concrete iron corrosion

ABSTRACT In this study, the effects of CI" which inserted in concrete structure by environmental effects and mixture water on concrete iron were investigated. Current-potential changes of concrete samples which were prepared using electrolyte as mixture and/or surface water containing various CI- concentration were measured. The conductivity, I CI" I and pH were determinated in case cathodic (-700 mV) and anodic (+700 mV) potentials applied to the cell for five hours. According to the investigation results, chloride ions cause to corrosion on concrete iron. A rapid increase of solubility of concrete iron is observed depending on increasing of CI" concentration at anodic region (+700 mV). A regular diffusion of CI" into the concrete and the surface water has not been determined at -700 and +700 mV potentials applied to the cell. Key Words: concrete, corrosion, cathodic protection, diffusion, chloride effect.