Influence of corrosion inhibitors in reinforced concrete – A state of art of review

Abstract

It is commonly known that reinforced bar corrosion possesses a substantial threat to the endurance of reinforced concrete (RC) structures, particularly in harsh environments. As a result, numerous monitoring and detecting devices have been created to obtain or see the degree of damage to corroded reinforcements within concrete, which cannot be seen with the unaided eye. Corrosion mechanism has also been thoroughly studied throughout the world. The goal of this study is to go through the latest changes in reinforced concrete using corrosion inhibitors and how they are used in the lab and in the field. Inhibitors are chemicals which can stop or postpone the onset of corrosion in concrete reinforced buildings when added to concrete at low concentrations. This review study looks at the various forms of corrosion inhibitors used to concrete, along with how they work and where they are utilised. The study also compares the evaluation studies of effectiveness of admixed inhibitor and migrating inhibitor. Inducing of corrosion inhibitor in concrete by electrochemical injection, electromechanical chlorine extraction procedures, X-ray photoelectron spectroscopy (XPS), and rapid chloride migration procedures were also discussed.