DESIGN OF EMULSIFIED ASPHALT TREATED BASE COURSES

THE FOLLOWING ARE DESCRIBED: (1) METHODS OF SELECTING AGGREGATES FOR EMULSIFIED ASPHALT TREATED BASES (ETB) AS MANY TYPES OF GRANULAR AGGREGATES, SANDS, AND NON-PLASTIC SILTS WERE FOUND SUITABLE FOR USE IN ETB; (2) STABILITY TESTS CARRIED OUT TO PREVENT PLASTIC DEFORMATION, AND MIX-DESIGN CRITERIA; (3) THE USE OF THE ELASTIC THEORY COMBINED WITH THE EXISTING DESIGN PROCEDURES OF THE ASPHALT INSTITUTE TO ESTABLISH THE LAYER EQUIVALENCY OF ETB. LAYER EQUIVALENCY IS EXPRESSED IN TERMS OF THE NUMBER OF INCHES OF COMPACTED UNTREATED AGGREGATE THAT WILL PRODUCE THE SAME LEVEL OF PERFORMANCE AS ONE INCH OF ETB. THE THICKNESS DESIGN PROCEDURES AND STRENGTH TESTS DESCRIBED WERE USED TO EVALUATE THE INFLUENCE OF CONSTRUCTION PRACTICES ON PAVEMENT THICKNESS. CURING OF ETB WAS FOUND NECESSARY TO ENSURE THAT THE ASPHALT PARTICLES IN THE EMULSION COALESCE INTO A TOUGH ASPHALT FILM. CONSTRUCTION CONTROL REQUIREMENTS ARE PRESENTED FOR ENSURING ADEQUATE CURING OF ETB. /RRL/

  • Supplemental Notes:
    • 30 Pp, 11 FIG, 5 TAB, 2 PHOT, 18 REF
  • Corporate Authors:

    Conf Asphalt Pavements Proc /S Africa

    ,    
  • Authors:
    • Kari, W J
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00205669
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Jul 18 1971 12:00AM