DURABILITY OF CONCRETE BRIDGE DECKS IN NEW YORK STATE

THIS INVESTIGATION INITIATED TO ASSESS THE CONDITION OF CONCRETE BRIDGES IN NEW YORK HIGHWAY SYSTEM INCLUDED INSPECTION OF 334 STRUCTURES BUILT FROM 1950 TO 1961 REPRESENTING VARIOUS DESIGNS AND ENVIRONMENT. ALL BUT ONE WERE TWO-COURSE BRIDGES WITH 7-INCH CONCRETE BASE, 60% HAD 2 1/2-INCH BITUMINOUS WEARING COURSE AND 40% HAD 4-INCH CONCRETE WEARING COURSE. FIFTY-FOUR BRIDGES WERE FIELD TESTED AND SAMPLED FOR LABORATORY ANALYSES TO EXPLAIN OBSERVED DETERIORATION. EVALUATION OF EXISTING PROTECTIVE COATINGS AND IMITATION OF AN EXPERIMENTAL COATING PROGRAM WERE ALSO INCLUDED. BITUMINOUS CONCRETE WEARING COURSES WERE FOUND TO BE IN GOOD CONDITION AFTER AN AVERAGE 7 YR. OF SERVICE. CEMENT CONCRETE WEARING SURFACES, ABOUT 8 YR OF AGE, EXHIBITED VARIOUS TYPES AND DEGREES OF DISTRESS. MOST PREVALENT WERE TRANSVERSE AND CORNER CRACKING. NO SIGNIFICANT DIFFERENCE IN SCALING WAS NOTED BETWEEN CONCRETE WITH OR WITHOUT SPECIFIED AIR-ENTRAINMENT, ABOUT 25% OF EACH TYPE EXHIBITING LIGHT TO MODERATE DISTRESS. PROGRESSIVE SCALING OF NON-AIR-ENTRAINED CONCRETE WEARING SURFACES WAS SUGGESTED BY A HIGHER INCIDENCE OF DISTRESS IN DECKS MORE THAN 10 YR OLD. SIGNIFICANT PROGRESSIVE SPALLING OF CONCRETE PIER CAPS AND COLUMNS, BOTH WITH AND WITHOUT AIR- ENTRAINMENT, OCCURRED ON SIMPLE-SPAN STRUCTURES DUE TO LEAKAGE THROUGH DECK JOINTS. RESULTS OF FIELD AND LABORATORY TESTS HELPED IN PART TO EXPLAIN PERFORMANCE. DYNAMIC VIBRA- TION AND STRUCTURAL TYPE COULD NOT BE CORRELATED WITH OBSERVED PATTERNS. CORES REMOVED FROM PORTLAND CEMENT CONCRETE DECKS INDICATED THAT MORE SEVERE CRACKING WAS ASSOCIATED WITH POOR BOND BETWEEN COURSES. THE GENERALLY SIMILAR SCALING OF CONCRETE DECKS WITH AND WITHOUT AIR- ENTRAINMENT WAS ATTRIBUTED TO MARKED VARIATIONS IN AIR CONTENT. WHILE NO EVIDENCE OF DISTRESS WAS FOUND IN STRUCTURAL CONCRETE DECKS COVERED BY A BITUMINOUS CONCRETE OVERLAY, PROBABLY BECAUSE OF THEIR YOUNG AGE WHEN CORED, HIGH CONCENTRATIONS OF DEICING SALT AT THE INTERFACE SUGGEST THE POSSIBILITY OF FUTURE DETERIORATION. REGARDING PROTECTIVE COATINGS, NONE OF THE SURFACE OVERLAYS LASTED MORE THAN 2 TO 3 YEARS. HOWEVER, MEMBRANE MATERIALS PLACED AS AN INTERLAYER BETWEEN A (BC) WEARING SURFACE AND A STRUCTURAL CONCRETE DECK ARE PERFORMING SATISFACTORILY. SILICONE AND DISTILLATE OIL SURFACE SEALANTS DID NOT APPEAR TO IMPROVE LONG-TERM DURABILITY OF NON-AIR-ENTRAINED CONCRETE DECKS. SIMILARLY, LINSEED OIL APPLIED TO AIR- ENTRAINED CONCRETE DID NOT ENHANCE DURABILITY. /AUTHOR/

  • Supplemental Notes:
    • Hpr, 27-1
  • Corporate Authors:

    New York State Department of Transportation

    1220 Washington Avenue
    Albany, NY  USA  12232

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Authors:
    • Corbisiero, J A
    • Radlift, R F
    • Irwin, R J
  • Publication Date: 1968-10

Subject/Index Terms

Filing Info

  • Accession Number: 00206356
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Mar 18 1994 12:00AM