THE EFFECTS OF MINERAL ADDITIVES ON THE DURABILITY OF COATING GRADE ROOFING ASPHALTS

THE EFFECTS OF 14 MINERAL ADDITIVES ON THE DURABILITY OF COATING MADE FROM THREE ASPHALTS WERE EVALUATED IN ACCELERATED DURABILITY MACHINES. IT WAS FOUND THAT WHILE THE DURABILITY OF THE COATING IS LARGELY A FUNCTION OF THE ASPHALT USED, IT INCREASES GENERALLY WITH COATING THICKNESS AND MINERAL ADDITIVE CONCENTRATION. ADDITIVES WITH FLAT, PLATELIKE PARTICLES FINER THAN 75 MICRONS IN DIAMETER (U.S. STANDARD SIEVE NO. 200) WERE MOST EFFECTIVE IN PRODUCING COATINGS OF INCREASED DURABILITY. COMPLETE DISPERSION OF THE ADDITIVES IN THE BASE ASPHALTS IS NECESSARY TO PRODUCE CONSISTENT RESULTS.

  • Supplemental Notes:
    • Bms, P 147
  • Corporate Authors:

    National Bureau of Standards /US

    ,    
  • Authors:
    • Greenfeld, S H
  • Publication Date: 1956

Subject/Index Terms

Filing Info

  • Accession Number: 00210950
  • Record Type: Publication
  • Source Agency: Highway Research Board Bibliography
  • Files: TRIS
  • Created Date: Jun 3 1994 12:00AM