Epoxy Update

by P. David Gustafson, Technical Dir.; Concrete Reinforcing Steel Institute, 933 N. Plum Grove Road, Schaumberg, IL 60173,

Serial Information: Civil Engineering—ASCE, 1988, Vol. 58, Issue 10, Pg. 38-38

Document Type: Feature article


Epoxy-coated reinforcing steel protects against corrosion if it is used correctly. Several construction practices, such as prescribing the limits on permissible coating damage due to shipping and using noncorrosive, compatible bar supports, are described. The bond strength of epoxy-coated bars were tested in comparison to equal uncoated bars. The results showed that the epoxy coating, whatever its thickness, is a bond breaker of the adhesion bond. Based upon these results, provisions for tension development length of epoxy-coated bars are being developed for the 1989 ACI Building Code.

Subject Headings: Bars (structure) | Bonding | Epoxy | Coating | Reinforcing steel | Corrosion | Freight transportation | Comparative studies

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