A COMPARISON OF SOME BOND-PREVENTING COMPOUNDS FOR DOWELL-BARS IN CONCRETE ROAD AND AIRFIELD JOINTS

THIS REPORT DESCRIBES A SIMPLE SERIES OF TESTS TO COMPARE THE BOND-PREVENTING EFFICIENCY OF TWELVE MATERIALS FOR COATING DOWEL-BARS IN THE TRANSVERSE JOINTS OF CONCRETE ROADS OR AIRFIELDS. THE MOST SATISFACTORY AND SERVICEABLE MATERIALS FOR BOND PREVENTION WERE FOUND TO BE BITUMINOUS COMPOUNDS BASED ON A BITUMEN OF PENETRATION BETWEEN 100 AND 200, BLENDED WITH SOLVENT NAPHTHA TO GIVE A PAINT-LIKE CONSISTENCY. THE USE OF MINERAL GREASE OR POLYTHENE SLEEVES IS NOT RECOMMENDED BECAUSE THEY ARE LIKELY TO AFFECT ADVERSELY THE LOAD TRANSFERENCE BETWEEN ADJACENT SLABS. BITUMINOUS AND OTHER PAINTS WHICH HARDEN PROVIDE LITTLE OR NO REDUCTION IN BOND AND ARE, THEREFORE, UNSUITABLE. /RRL/A/

  • Supplemental Notes:
    • Technical REPT, 10 PP, 2 FIG, 5 TAB, 2 PHOT
  • Corporate Authors:

    Cement and Concrete Association

    52 Grosvenor Gardens
    London SW1W 0AQ,   England 
  • Authors:
    • Weaver, J
  • Publication Date: 1967-6

Subject/Index Terms

Filing Info

  • Accession Number: 00214902
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Mar 24 1994 12:00AM