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ADHESION OF ASPHALT TO STONE

A SCRAPING TEST WAS USED TO DETERMINE CONDITIONS FOR FORMING A PROPER JOINT BETWEEN ASPHALT AND STONE, AND A PEELING TEST WAS USED TO SHOW THAT THE ADHESION OF COMPOSITES OF STONE, ASPHALT, AND ALUMINUM-FOIL RIBBON FOLLOWS THE RHEOLOGICAL THEORY OF ADHESION. VENEZUELAN ASPHALT OF PENETRATION GRADE 85 TO 100 WAS APPLIED TO GRANITE AND MARBLE SLABS AT TEMPERATURES FROM 100 TO 170 C. AFTER COOLING 1 TO 3 HR. ASPHALT WAS SCRAPED FROM THE SLABS WITH A RAZOR BLADE. THE AMOUNT OF ASPHALT REMAINING AFTER SCRAPING WAS NEARLY INDEPENDENT OF APPLICATION TEMPERATURES OF 110 TO 170 C BUT STRONGLY DEPENDENT ON SURFACE ROUGHNESS. STONE-ASPHALT-ALUMINUM-FOIL SANDWICHES WERE HEATED AT 130 C FOR 20 TO 30 MIN AND ALLOWED TO COOL 1 TO 3 HR. THE ALUMINUM FOIL WAS THEN PEELED FROM THE ASPHALT USING AN APPARATUS THAT PROVIDED A PERPENDICULAR TENSILE FORCE. CONFORMING TO RHEOLOGICAL THEORY, THE PEELING RATE AND RATIO OF RESIDUE ON STONE AND ASPHALT DEPENDED ON PEELING TENSION AND TEMPERATURE. ATTEMPTS TO USE THIS TEST TO DETERMINE PENETRATION OF ASPHALT BY WATER WERE NOT SUCCESSFUL, BUT THE PENETRATION OF WATER BY ASPHALT WAS MEASURED AT 3 AND 25 C. IN THESE TESTS A STONE SLAB WAS APPLIED TO AN ASPHALT-COATED METAL UNDER WATER. INITIALLY THERE WAS VERY LITTLE ADHESION. WITH AGING, HOWEVER, ADHESION INCREASED, THEN LEVELLED OFF. THE RATE OF DISPLACEMENT APPEARED TO BE DIFFERENT FOR GRANITE AND MARBLE. /JM/

  • Supplemental Notes:
    • Vol 1, No 1, PP34-47, 5 FIG, 2 TAB, 15 REF
  • Authors:
    • Bikerman, J J
  • Publication Date: 1966-3

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Filing Info

  • Accession Number: 00211326
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 9 1994 12:00AM