NINE-YEAR PERFORMANCE OF EPOXY-COATED REBAR IN A TUNNEL STRUCTURE

This paper presents the current state of the epoxy-coated reinforcing steel embedded in the deck of a tunnel structure. The tunnel has been subjected to frequent applications of de-icing agents, mainly sodium chloride, throughout each winter for nine years. The tests included measurement of corrosion rate, determination of chloride profile, and analysis of the nature of corrosion products formed on the rebar surface. The results showed that epoxy-coated rebar exhibited far superior corrosion performance when compared with uncoated reinforcing steel. Chloride ion concentration shows a gradual decrease with depth, becoming minimum at mid depth then increasing again. (A) For the covering abstract see IRRD 867793.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 1199-1209

Subject/Index Terms

Filing Info

  • Accession Number: 00675073
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 1-85075-723-2
  • Files: ITRD
  • Created Date: Mar 28 1995 12:00AM