NBCA BLACK BASE SURVEY

ACCORDING TO THIS REPORT, POOR QUALITY BASE COURSE HAS BEEN RESPONSIBLE FOR MORE CASES OF PAVEMENT DISTRESS IN THE UNITED STATES THAN ANY ONE FEATURE. THE NATIONAL BITUMINOUS CONCRETE ASSOCIATION BELIEVES THAT AN UPGRADING OF BASE COURSES WOULD RESULT IN REAL QUALITY IMPROVEMENT. IN THIS CONNECTION BLACK BASES OFFER DISTINCT ADVANTAGES FOR UPGRADING LOCAL MATERIALS. BLACK BASE REFERS TO HOT- PLANT-MIXED ASPHALTIC CONCRETE USED BELOW THE NORMAL WEARING, BINDER, OR LEVELING COURSES. NO SPECIFIC GRADATION IS IMPLIED, AND MIXES MADE WITH AGGREGATES RANGING FROM COARSE TO FINE ARE CONSIDERED AS BLACK BASES.

  • Supplemental Notes:
    • Qip 67, pp 1-8
  • Corporate Authors:

    National Asphalt Pavement Association (NAPA)

    5100 Forbes Boulevard
    Lanham, Maryland  United States  20706
  • Authors:
    • Foster, C R
  • Publication Date: 1963

Subject/Index Terms

Filing Info

  • Accession Number: 00210900
  • Record Type: Publication
  • Source Agency: Highway Research Board Bibliography
  • Files: TRIS
  • Created Date: Feb 8 1971 12:00AM