CORROSION PERFORMANCE OF EPOXY-COATED REINFORCING STEEL: NORTH AMERICAN EXPERIENCE

The paper combines a brief history of epoxy-coated reinforcing steel in North America with a summary of investigations of its corrosion performance. Epoxy-coated reinforcement was developed in the early 1970s. After demonstration projects in the mid 1970s, the market, largely in the transportation sector, expanded rapidly and epoxy-coating became the preferred method of corrosion protection in highway bridges. The first evidence of unsatisfactory field performance emerged in 1986 in bridges in the Florida Keys. Isolated examples of corrosion of coated reinforcement were reported from about 1990 onwards, though many field investigations reported good performance. Laboratory studies were equally controversial, some predicting good performance, and others only a short extension of service life. Improvements have been made in increasing the adhesion of coatings, and decreasing the number of defects, but the effect on the service life of epoxy-coated reinforcement is uncertain because the necessary and sufficient conditions for effective long-term field performance have not been defined. (A)

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  • Corporate Authors:

    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • Manning, D G
  • Publication Date: 1996

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00729207
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 12 1996 12:00AM