Protection of Rebar Concrete by Means of Inhibitor Admixture

This paper deals with the effectiveness of nitrite based and amine based inhibitors in protecting steel rebar against corrosion due to aggressive environment. The suitability of the inhibitor was evaluated by carrying out flexural tests. Inhibitors were admixed during casting and the concentration of inhibitor was varied from 3% to 5%. The corrosion of reinforcement is accelerated by chemical and electrochemical techniques. Amine based inhibitor delays the onset of corrosion. Further, EIS studies were performed to study the effectiveness of amine based inhibitor.