HEAT-RESISTANT PROPERTIES OF ADDITIVES FOR BITUMINOUS MATERIALS

IN PAST YEARS IT WAS GENERALLY BELIEVED THAT HOT-MIXED, HOT-LAID BITUMINOUS PAVEMENTS WERE NOT SUBJECT TO FILM STRIPPING IN THE PRESENCE OF MOISTURE. INVESTIGATIONS MADE WHERE FAILURES OF SUCH BITUMINOUS PAVEMENTS HAVE OCCURED INDICATED, HOWEVER, THAT FILM STRIPPING HAD TAKEN PLACE IN THE UNDERLYING COURSES OF THE PAVEMENTS, THE CONDITION BEING MORE SEVERE IN THE CASE OF IMPERMEABLE BASES THAN IN THOSE HAVING POROUS GRANULAR MATERIALS. TO COUNTERACT THIS DEFICIENCY, THE USE OF COMMERCIAL ADDITIVES FOR TREATING ASPHALT WAS ADOPTED. THE RESULTS WERE NOT ALWAYS SATISFACTORY, IT WAS FELT BY MANY AUTHORITIES THAT THE ADDITIVES MIGHT NOT BE STABLE AT THE TEMPERATURES USED IN CONSTRUCTING HOT-MIX BITUMINOUS PAVEMENTS OR WHEN HELD AT RELATIVELY HIGH TEMPERATURES DURING SHIPMENT FROM THE REFINERY. AS A RESULT, MANUFACTURERS UNDERTOOK THE PRODUCTION OF ADDITIVES HAVING HEAT-RESISTANT QUALITIES FOR THE TREATMENT OF ASPHALT.

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  • Supplemental Notes:
    • Vol 28, No 3, P 41
  • Authors:
    • Critz, P F
  • Publication Date: 1954-8

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Filing Info

  • Accession Number: 00210977
  • Record Type: Publication
  • Source Agency: Highway Research Board Bibliography
  • Files: TRIS
  • Created Date: Apr 21 1994 12:00AM