Performance of epoxy-coated reinforced steel in the deck of the Perley Bridge
- JS Tinnea & Associates
The Perley Bridge spanned the Ottawa River between the Canadian provinces of Ontario and Quebec from 1931 to 1999. Epoxy-coated steel reinforcing bar (ECR) was used in 1979 in an effort to extend the service life of span 17. Patches were needed to repair corrosion of the west lane as little as 7 to 11 years later. No patches were needed for the east lane which had twice the cover concrete of the west lane. Examinations showed that the original concrete in both lanes and the patch concrete in the west lane were of good quality. Epoxy adhesion to the steel reinforcing bar was good to fair over much of the reinforcing bar, but poor to failed in isolated areas. Analytical scanning electron microscopy (ASEM) identified voids, rust, cracked epoxy, and cracked concrete at some ECR locations. Chloride profiling of the concrete in both lanes, coupled with the corrosion threshold level of chloride, indicated that the time required for corrosion to cause visible damage of the deck was 6.2 years for the west lane and 18.9 years for the east lane.
- Research Organization:
- Albany Research Center (ARC), Albany, OR; JS Tinnea & Associates, Seattle, WA
- Sponsoring Organization:
- Ontario Ministry of Transportation, Toronto, Ontario, Canada
- OSTI ID:
- 895158
- Report Number(s):
- DOE/ARC-2001-099; CRADA 0977
- Country of Publication:
- Canada
- Language:
- English
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