EFFECT OF RIGID OVERLAYS ON CORROSION RATE OF REINFORCING STEEL IN CONCRETE BRIDGE DECKS. FINAL REPORT

A study on the effects of rigid overlays on corrosion rate of steel in reinforced concrete bridge decks was carried out using three-electrode linear polarization (3LP) instrumentation. Corrosion currents were measured immediately prior to placement of overlays, and one and two years after placement. Four latex modified concrete (LMC), three superplasticized dense concrete (SDC), and three condensed silica fume concrete (CFSC) overlays were included in the study. Results of the study indicate that for LMC and CSFC overlays there is a decrease of from 1 to 2 mA/sq ft in corrosion current after 2 years of service. The most consistent decreases were observed for the CSFC overlays. Results for the SDC overlays were less consistent.

  • Corporate Authors:

    Construction Technology Laboratories, Incorporated

    5400 Old Orchard Road
    Skokie, IL  United States  60077-1030

    Ohio Department of Transportation

    25 South Front Street
    Columbus, OH  United States  43215

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • WHITING, D
  • Publication Date: 1991-10

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 45 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00620435
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/OH-92/001
  • Contract Numbers: State Job 14452(0)
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Mar 31 1992 12:00AM