PROTECTIVE COATINGS FOR CONCRETE BRIDGE DECKS: INTERIM REPORT

PERFORMANCE OF PROTECTIVE COATINGS FOR BRIDGE DECKS IS BEING EVALUATED. APPLICATIONS TO BRIDGES ON THE NEW YORK STATE HIGHWAY SYSTEM FROM 1961 THROUGH 1967 INCLUDED SURFACE OVERLAYS, MEMBRANES BETWEEN THE STRUCTURAL SLAB AND BITUMINOUS WEARING COURSE, AND SURFACE SEALANTS. OVERLAYS AND MEMBRANES CONSISTED OF EPOXIES, POLYESTERS, POLYURETHANES, LATEXES, NEOPRENES, SILICONE RUBBERS, AND ASPHALT CUTBACKS. SURFACE SEALANTS INCLUDED SILICONES, DISTILIATE OILS, AND LINSEED OIL. NONE OF THE SURFACE OVERLAYS LASTED MORE THAN 2 OR 3 YEARS. HOWEVER, A FLEXIBLE POLYESTER RESIN WITH FIBER GLASS HAS PROVIDED SATISFACTORY SERVICE FOR 1-1/2 YEARS AND WILL REMAIN UNDER OBSERVATION. LEAKAGE OF BOX-GIRDER BRIDGES WITH A MEMBRANE WAS PRIMARILY DUE TO SHEAR-KEY CONSTRUCTION (SINCE MODIFIED), WHILE THE SAME MATERIALS APPLIED TO COMPOSITE BRIDGES WERE ASSOCIATED WITH LEAKAGE THAT COULD NOT BE EXPLAINED. A MORE COMPREHENSIVE SURVEY OF MEMBRANES IS PLANNED. SILICONE AND DISTILLATE OIL SEALANTS ON NON-AIR-ENTRAINED CONCRETE DID NOT IMPROVE LONG-TERM DURABILITY. AIR-ENTRAINED CONCRETE, BOTH WITH AND WITHOUT OIL TREATMENT, SHOWED NO EVIDENCE OF DETERIORATION AFTER 4 YEARS OF EXPOSURE. /AUTHOR/

  • Supplemental Notes:
    • Rr 69-4, 23 PP
  • Corporate Authors:

    New York State Department of Transportation

    Engineering Research and Development Bureau, 1220 Washington Avenue
    Albany, NY  USA  12232
  • Authors:
    • Irwin, R J
    • Corbisiero, J A
  • Publication Date: 1969-6

Subject/Index Terms

Filing Info

  • Accession Number: 00216869
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Dec 2 1970 12:00AM