TIME-TO-CORROSION OF REINFORCING STEEL IN CONCRETE SLABS. VOLUME 3: PERFORMANCE AFTER 830 DAILY SALT APPLICATIONS

The purpose of this investigation is to provide administrators and designers with factual data on which to base decisions on the type of protection to provide to bridge decks constructed in corrosive environments. Specifically, the objective is to determine the relative time-to-corrosion of reinforcing steel embedded in concrete slabs, fabricated from various mix designs and construction procedures when the slabs are subject to periodic setting with a 3 percent NaC1 solution. One hundred and twenty-four, 4 ft. by 5 ft. by 6 in. reinforced concrete slabs were fabricated, cured, and placed in the outdoor exposure yard on elevated stands. Concrete covering the feasible range of mix designs were investigated. Clear concrete cover ove the reinforcing steel was varied from 1 to 3 inches. Various finishing methods, curing procedures, admixtures, surface protective treatments and special new concretes were also included. Volume I and II, FHWA-RD-73-32 and 33, issued in April 1973 presented the details of slab fabrication and testing as well as an interim evaluation after 330 daily salt applications. This report, Volume 3, presents the results of evaluations of conventional concretes and those materials and techniques which "looked good" in the initial report. 830 daily saltings were applied prior to this evaluation. /FHWA/

  • Supplemental Notes:
    • See also PB-226053.
  • Corporate Authors:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • CLEAR, K C
  • Publication Date: 1976-4

Media Info

  • Pagination: 64 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00142909
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-76- 70 Intrm Rpt., FCP 24B1-012
  • Files: TRIS, USDOT
  • Created Date: Dec 15 1976 12:00AM