Dolli H.,Vel Technology Multi Technology Dr Sakunthala Dr Rangarajan Engineering College |
Bhavani,Vel Technology Multi Technology Dr Sakunthala Dr Rangarajan Engineering College |
Rekha,Vel Technology Multi Technology Dr Sakunthala Dr Rangarajan Engineering College |
Suresh,Vel Technology Multi Technology Dr Sakunthala Dr Rangarajan Engineering College |
And 2 more authors.
International Journal of Control Theory and Applications | Year: 2016
Protection of reinforcement corrosion is one the paramount task in the concrete structures exposed to marine environment. This is mainly caused by the chloride ingress and break down of passivity. In such a situation the foolproof solution lies in maintaining a chloride free passive environment around the steel throughout the service life of the concrete structures. The present investigation deals with the evaluation of effectiveness of galvanic protection on the reduction of chloride content in concrete. Towards this objectives, the performance of galvanic protection of steel in concrete was evaluated on experimental concrete specimens of size 150 × 150 × 300 mm were cast with chloride uncontaminated and chloride contaminated concretes. The cathodic protection system was energized by installing a ribbon type magnesium composite anode inconjuction with ion conductive polymer backfill at the anode concrete-interface and the experiment was continued to over a period of 600days. At the end of every 10th day, the periodical data with regard to cathodic protection was measured. After a specific period, the concrete core samples were collected and the water soluble chloride was determined upto different distance from anode. The result showed that in the case of control system (wit out CP), the chloride concentration increased with increasing depths and also a usual diffusion type curve was obtained; whereas a lower level of chloride (near steel) and a linear profile is exhibited for the concrete specimens with CP applied system. This supports to assertion that the chloride ions are moved away from cathode (steel) by the action of cathodic protection. © International Science Press.