Coating disbondment in epoxy-coated reinforcing steel in concrete -- Field observations
- Univ. of South Florida, Tampa, FL (United States). Dept. of Civil and Environmental Engineering
- Florida Dept. of Transportation, Gainesville, FL (United States). Materials Office
A summary on the disbondment of epoxy coating on reinforcing steel extracted from marine substructures in Florida is presented. The bridges examined in this study had been in service for periods ranging from 3 to 13 years. Disbondment was consistently observed in rebar in bridges older than 4 years. The disbondment developed even in the absence of significant chloride ion contamination of the concrete surrounding the rebar. Continued loss of adhesion was observed in most of the specimens even after prolonged storage (1 month to years) in a desiccator. Contamination of the epoxy-steel interface was modest to very small, and the extent of contamination did not show any distinct correlation with loss of bond.
- OSTI ID:
- 382567
- Report Number(s):
- CONF-960389--
- Country of Publication:
- United States
- Language:
- English
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