Anti-corrosion Performance of an Epoxy Rebar Paint

At marine environments and the places using snow-melting agents,the rebar corrosion caused by penetration of chloridion is a major factor which can lead to invalidation of concrete structures.A solvent based anti-corrosion paint system applied to rebar surface of concrete structure had been developed.The influences of anti-corrosion pigments and glass flakes on anti-corrosion performance of the primer and top coating were studied.The results showed that the coating system with 25% ~ 31% micaceous ferric oxide and mel-phosphate aluminium as anti-corrosion pigments of primer and with an addition of 27% glass flakes treated by coupling agent to the top coating had good resistance to chloridion penetration.