A Review on Green Inhibitors of Reinforcement Concrete Corrosion

Deterioration of the rebar due to corrosion is a serious problem fordurability of reinforced concrete (RC) structures as it leads to asignificant loss public and industrial sections. Various approaches, suchas cathodic protection, application of epoxy protective layer on therebar, application of cover and coating on the concrete to make itimpermeable to the invasive and aggressive agent materials, applicationof chemical material to prevent or delay the corrosion, have beenapplied to fight against this destructive phenomenon. It is widelyaccepted that one of the most effective and thus frequently appliedmethods is the application of chemical corrosion inhibitors. In the lastdecade these chemicals have been increasingly on demand; however,the downside is that the available chemicals in the market are toxic anddangerous to the environment. Hence, during the last two decades’researchers have switched their attention on Green Corrosion Inhibitors.The present paper analysis the non-toxic corrosion inhibitors inreinforced concrete based on the studies conducted on green inhibitors.The inhibitors will be introduced based on not only environmentallyfriendliness, but also efficiency, availability, being economical, ease ofapplication, and other criterion.

Keywords:

Reinforced Concrete , Corrosion , Chemical Corrosion Inhibitors , Green Corrosion Inhibitors