Reduction of Chloride Ion in RC Structures by Inverse Diffusion Method

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Chloride ingress in Reinforced Concrete (RC) structures is the most aggressive phenomenon that causes the corrosion of steel reinforcement bars and warrants untimely expensive repair of the existing structures. To ensure the durability of RC structures, the development of high performing repairing material is immensely expected. This study was carried out using ion-exchange resin admixture to develop a high durable resin mixed cement mortar for reducing the chloride induced corrosion of RC structures. A set of experiments including immersion tests, inverse diffusion tests were conducted to investigate the chloride absorption behavior and corrosion reducing potentiality of resin mixed cement mortar. The test results revealed that, newly developed mortar could effectively reduce chloride concentration at the reinforcement area and restrain the chloride induced corrosion of RC structures.