CORROSION PROTECTION: THE ENVIRONMENT CREATED BY BRIDGE ENCLOSURE

One approach to the corrosion protection of composite bridges is to construct an enclosure round the steel girders which support the reinforced concrete deck. The environment inside a number of such bridge enclosures has been characterised in terms of corrosivity, temperature, relative humidity and time of wetness. Results show that enclosure can produce an atmosphere in which the corrosion rate of initially uncorroded steel is very low. Moreover, enclosure substantially reduces the rate of corrosion of steel which is already corroding. The benefits of the enclosure technique are compared with standard protection methods, particularly painting. The enclosures monitored are the Iden Bridge over the River Rother in East Sussex; the Exceat Bridge over the River Cuckmere in East Sussex; the Beehive Lane bridge, a footbridge crossing the A329M near Bracknell, Berkshire; the Conon Bridge spanning the River Conon, Invernesshire.

  • Availability:
  • Corporate Authors:

    Transport and Road Research Laboratory (TRRL)

    Wokingham, Berkshire  United Kingdom 
  • Authors:
    • MCKENZIE, M
  • Publication Date: 1991

Language

  • English

Media Info

  • Features: References;
  • Pagination: 24 p.
  • Serial:
    • TRRL RESEARCH REPORT
    • Issue Number: RR 293
    • Publisher: Transport and Road Research Laboratory (TRRL)
    • ISSN: 0266-5247

Subject/Index Terms

Filing Info

  • Accession Number: 00799889
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, ATRI
  • Created Date: Oct 6 2000 12:00AM