Field Examination Of Epoxy Coated Rebars In Concrete Bridge Decks

Download or read book Field Examination of Epoxy-coated Rebars in Concrete Bridge Decks written by Henry J. Gillis and published by . This book was released on 1994 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coating reinforcing bars with epoxy was assumed to be the answer to corrosion problems in highway structures when it was developed. In the last few years, this assumption has been seriously questioned. Cases of damage to structures resulting from corrosion of epoxy coated steel have been reported in Florida, New York and Ontario. In 1992, the Physical Research Section was asked by the Office of Bridges and Structures at the Minnesota Department of Transportation to conduct a limited field survey to determine if a problem existed in Minnesota. The first bridge built with epoxy coated rebars in Minnesota shows no signs of distress almost 20 years after construction. The corrosion of epoxy coated rebars that has been observed elsewhere was not discovered by this survey. The prestressed girder bridges included in this survey showed fewer transverse cracks than the steel girder bridges.