AN ELECTRICAL METHOD FOR EVALUATING BRIDGE DECK COATINGS

FIELD AND LABORATORY TESTS HAVE INDICATED THAT THE ELECTRICAL RESISTANCE OF A BRIDGE DECK COATING CAN BE RELATED TO THE VOIDS AND THUS SEALING ABILITY OF THE COATING. THIS NON-DESTRUCTIVE METHOD FOR EVALUATING BRIDGE DECK COATINGS MAY BE AN ADDITIONAL TOOL FOR EVALUATING THE PERFORMANCE OF MEMBRANES USED TO PREVENT THE INGRESS OF DEICING SALTS WHICH CAUSE CORROSION OF THE STEEL. THE RESISTANCE BETWEEN VARIOUS LOCATIONS ON THE BRIDGE SURFACE AND THE REINFORCING STEEL IS MEASURED. IT IS POSTULATED THAT AN EXCELLENT WATERPROOF COATING FOR BRIDGES WOULD ALWAYS HAVE A RESISTANCE GREATER THAN 500,000 OHMS/SQUARE FT., WHILE A POOR OR PERFORATED COATING WOULD NEVER HAVE A RESISTANCE GREATER THAN 100,000 OHMS/SQUARE FT. /AUTHOR/

  • Corporate Authors:

    California Division of Highways

    Bridge Department
    Sacramento, CA  USA  05914

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Spellman, D L
    • Stratfull, R L
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00215962
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: D-3-11
  • Files: TRIS, USDOT
  • Created Date: Jan 24 1972 12:00AM