Corrosion Behavior of Reinforcement Bars with Various Surface Treatments in Chloride-Contaminated Concrete

Abstract

This work explores the corrosion behavior of reinforcing bars in concrete environments polluted by chloride, analyzing the impact of various surface treatments. The corrosion-resistant nature of reinforcement bars is critical to the longevity of infrastructure in severe settings, particularly those subjected to seawater or de-icing agents. Enhancing this resistance are surface treatments like as galvanization, corrosion inhibitors, and epoxy coatings. Epoxy coatings protect steel from direct contact to corrosive factors by acting as strong barriers against chloride penetration. Applying a protective zinc layer that corrodes sacrificially to prolong the steel's life is known as galvanization. Corrosion inhibitors, on the other hand, reduce the rate of corrosion whether they are added externally or blended into concrete mixtures. This study examines the effectiveness of various treatments using field investigations, electrochemical analysis, and accelerated corrosion tests. It takes into account variables including concrete quality, coating type and thickness, and weather conditions. By optimizing surface treatments for reinforcing bars, the study's findings hope to increase the overall lifetime and durability of concrete buildings in settings high in chloride.