REPORT OF COMMITTEE ON CHARACTERISTICS OF ASPHALTS

A QUESTIONNAIRE RELATING TO THE SERVICE OF ASPHALTIC ROAD MATERIALS WAS ADDRESSED TO VARIOUS ORGANIZATIONS AND INDIVIDUALS HAVING TO DO WITH THE USE OF ASPHALT IN HIGHWAY CONSTRUCTION. NINETY-ONE REPLIES WERE RECEIVED AND THESE INDICATED THAT FAILURES OF ASPHALTIC SURFACES DUE TO THE QUALITY OF THE ASPHALT ARE PREVALENT AND MERIT SERIOUS ATTENTION. FAILURES WERE REPORTED FROM ALL SECTIONS OF THE COUNTRY AND WERE ASSOCIATED WITH MANY TYPES AND GRADES OF ASPHALT. ON THE BASIS OF THESE REPLIES A PROGRAM OF ASPHALT RESEARCH IS RECOMMENDED. DURING 1937, TEN LABORATORIES COOPERATED IN A STUDY OF FILM STRIPPING IN BITUMINOUS MIXTURES CONTAINING VARIOUS TYPES AND GRADES OF ASPHALTIC ROAD MATERIALS. WIDELY VARYING RESULTS WITH DIFFERENT AGGREGATES INDICATE AGGREGATE CHARACTER TO BE OF MAJOR IMPORTANCE IN CONNECTION WITH FILM STRIPPING. AS FOR THE BITUMINOUS MATERIALS, RESISTANCE TO STRIPPING INCREASED WITH CONSISTENCY AND CRACKED MATERIALS WERE MORE RESISTANT THAN UNCRACKED. THE CURING OF SAMPLES WAS FOUND TO HAVE AN IMPORTANT EFFECT ON TEST RESULTS. MODIFICATIONS OF THE TEST PROCEDURE ARE SUGGESTED. /AUTHOR/

  • Supplemental Notes:
    • Vol 17, ParT I, PP 328 - 333, 1 PHOT; part of Report of Department of Materials and Construction
  • Authors:
    • Kelley, E F
  • Publication Date: 1938

Media Info

  • Monograph Title: Proceedings of the Seventeenth Annual Meeting of the Highway Research Board Held at Washington, D.C. November 30, December 1, 2, 3, 1937. Part I
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00211547
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 15 1971 12:00AM