Comparative Study of Corrosion Resistance of Polymer Modified Concrete and Concrete with Corrosion Inhibiting Agent

Abstract

Now a days, various reinforced concrete structures due to rapid deterioration. Several deterioration causes and factors have been investigated in reinforced concrete structures. Corrosion of steel reinforcement is one of the major deterioration problems. The study has been made on corrosion resistance of polymer modified concrete with polymer (SBR latex) 10% such as with mineral admixture (Fly ash 30%, GGBS 30%, SF 8%) by volume of cement. Also the study will conducted for concrete with corrosion inhibiting agent (sodium nitrite 2%, Potassium dichromate 0.75%).Thus, the corrosion-induced initiation time and maximum anodic current intensity generated by corrosion process of embedded steel reinforcement in concrete were investigated in this paper. The objective of this study is to evaluate the corrosion resistance of polymer modified concrete and concrete with corrosion inhibiting agent using an acceleration corrosion cell. The corrosion cell proved to be good and simple method to evaluate the durability of concretes especially with respect to chloride ion penetration, and the protection of reinforcement against corrosion. Results proved that due to remarkable increase in time to cracking the polymer modified GGBS based concrete increases the durability and service life of concrete structures significantly.