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Corrosion behavior of epoxy/zinc duplex coated rebar embedded in concrete in ocean environment

Authors
Publisher
Elsevier Ltd
Publication Date
Volume
28
Issue
1
Identifiers
DOI: 10.1016/j.conbuildmat.2011.08.026
Keywords
  • Epoxy/Zinc Duplex Coating
  • Rebar
  • Corrosion
  • Concrete

Abstract

Abstract The corrosion behavior of epoxy/zinc duplex coated rebar embedded in concrete is evaluated comparing with the black steel, galvanized and epoxy coated rebars for a long term in ocean environment. The effect of mechanical damages of epoxy coatings on the corrosion protection is examined. The epoxy coated and epoxy/zinc duplex coated rebars show the higher anti-corrosion performance than other types of rebars. However, once the epoxy coating is mechanically damaged, the more serious corrosion may occur in the damaged area of epoxy coated rebar in concrete. The epoxy/zinc duplex coating remains a good corrosion protection to steel in concrete even when suffering from some mechanical damages.

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