NON-FERROUS PRESTRESSING AND REINFORCEMENT FOR CONCRETE HIGHWAY BRIDGES

A number of strategies are available to deal with the problem of corrosion of reinforcement in concrete bridges, one of which is to replace the steel reinforcement with a non-corroding alternative such as fibre reinforced plastic (FRP). This paper gives an overview of research in the UK by the Highways Agency of the Department of Transport, and by an industrial consortium in a EUREKA project. Trial bridges have been built in several countries. The work reported here was to assess the potential benefit of FRP reinforcement for UK highway bridges, and to generate independent test data to ensure that design calculations would be safe. Also, an existing whole life costing model was used to compare the use of FRP with other ways of dealing with corrosion in concrete bridges. Tests have been carried out on 4 metre long reinforced concrete and post tensioned beams and preliminary conclusions are that current design methods can be used, with some adjustments. Determining shear strength proved most difficult. FRP material costs would have to fall by 35% (glass fibre) and 75% (carbon fibre) for them to be economic on a road with average traffic levels, but they are already cheaper than conventional reinforcement where traffic flow is more than twice the average. (A) For the covering abstract see IRRD 882313.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 503-15

Subject/Index Terms

Filing Info

  • Accession Number: 00729491
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-419-21210-8
  • Files: ITRD
  • Created Date: Dec 26 1996 12:00AM