Effect of Organic Coating Corrosion Inhibitor on Protection of Reinforced Mortar

Abstract

Corrosion of reinforced concrete is the most important cause of concrete structure deterioration. In the present study, the protective effect of the reinforcement mortars against corrosion is examined. In particular, the chloride penetration resistance on reinforced cement mortars using organic coating as additive containing was studied. The aforementioned additive consists of corrosion inhibitor for protection of steel rebars against pitting corrosion. For the experimental procedure, four (4) different types of reinforced mortars were prepared. The corrosion protection of the additive was evaluated by electrochemical methods, (linear polarization resistance, Half-cell Potential Resistance and Electrochemical Impedance Spectroscopy). In addition, the mass loss of steel rebars against time of partially immersed in NaCl solution was carried out in the lab. The experimental results showed that in all examined cases the organic coating provides anticorrosion protection on steel rebars against chlorides.

Corrosion Behavior of Reinforcement Steel Embedded in Cement Mortars Using Different Protection Systems

“…Also, in a previous work [19] where it was examined the use of the same organic coating containing corrosion inhibitor that was used at the present study, in order to estimate anticorrosion protection on the reinforcement steel, showed that the use of the system organic coating/corrosion inhibitor applied on the surface of the mortar and on the surface of the steel rebar appeared an optimum anticorrosion protection of 29% based on mass loss, after 24 months in the corrosive environment, while the system organic coating/corrosion inhibitor applied on the surface of the mortar only gave a protection degree of 11% based on mass loss for the same period.…”