STRENGTHENING OF DELPH BRIDGE AND OLD BEDFORD BRIDGE

The paper describes the work carried out in Norfolk, England on two under-strength bridges in an environmentally sensitive area. A feasibility report was first produced to enable the client to decide whether to strengthen or replace the bridges. Detailed designs and contract documents were produced and works supervised within the scheme. The two bridges are of a similar three-span reinforced concrete construction with curved soffits, but one was completed in 1936, the other in 1964. A thorough survey of the concrete was necessary to understand the problems and possible solutions. Investigations showed that spalling of the concrete and corrosion of the reinforcement had taken place. Tests showed that the depth of carbonation had exceeded the cover in many places. Details are given of the repair techniques involved, including an electrochemical process to treat the concrete. Site works to repair the bridges were designed so that vehicular and pedestrian traffic could be maintained at all times.

  • Availability:
  • Corporate Authors:

    PALLADIAN PUBLICATIONS LTD

    THE OLD FORGE
    ELSTEAD, SURREY  United Kingdom  GU8 6DD
  • Authors:
    • HUGGARD, R
  • Publication Date: 1996

Language

  • English

Media Info

  • Pagination: p. 22-6
  • Serial:
    • CONSTRUCTION REPAIR
    • Volume: 10
    • Issue Number: 1
    • Publisher: PALLADIAN PUBLICATIONS LTD
    • ISSN: 0967-0726

Subject/Index Terms

Filing Info

  • Accession Number: 00723154
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jul 26 1996 12:00AM