Epoxy Coatings for Corrosion Protection of Steel rebar used in Reinforced Geopolymer Concrete

Epoxy Coating, Corrosion, Rebar steel, Reinforced concrete and Geopolymers.

Abstract

Corrosion is a pervasive and costly issue with significant economic and environmental implications. Corrosion protection coatings play a vital role in safeguarding various industries against the detrimental effects of corrosion. In this study, reinforcing steel bars with four types of epoxy coating (thickness range (1.00 – 1.350 mm) then embedded in concrete and then the samples were carried out of corrosion potentials, corrosion current density, coating adhesion tests, chloride content. Results revealed that under the studied conditions the CR did not provide total protection of steel reinforcement in cracked concrete. Their use however, tended to reduce significantly the damage caused by the chloride-induced corrosion when compared with the uncoated bars embedded in concrete with similar characteristics.