Patents

A redox active polymer encapsulated lamellar compound based self passivating anticorrosive coating has been developed for corrosion protection of reinforcement rods embedded in concrete structures. The corrosion resistant property of the newly developed coating has been evaluated by various short term laboratory tests and some accelerated corrosion studies such as complete immersion test, potential measurements, anodic polarization studies, electrochemical impedance measurements, cathodic disbondment test and time to cracking study. The results of the above studies evidently indicate the superior corrosion resistant property of this self passivating anticorrosive coating system even under severe marine environmental condition. Because of the superior corrosion resistant property of this self passivating anticorrosive coating system, the corrosion initiation on the rebars embedded in the concrete is delayed or postponed. Consequently, the actual service life of valuable concrete structures can be increased by several folds.