THE EFFECT OF SILICONE ON THE RAVELING CHARACTERISTICS OF HOT MIX ASPHALT PAVING MIXTURES

RAVELING IS DEFINED AS DISINTEGRATION OF THE ASPHALT PAVEMENT FROM THE SURFACE DOWNWARD. THE EFFECT OF SILICONE WAS STUDIED ON THE SUSCEPTIBILITY OF A HOT-MIX TO RAVEL. RAVELING WAS EVALUATED, QUANTITATIVELY, BY MEASURING THE AMOUNT ABRADED FROM THE SURFACE OF COMPACTED SPECIMENS DURING AN ACCELERATED ABRASION TEST. CONDITIONS WERE DELIBERATELY SELECTED TO INSURE RAVELING IN THE SPECIMENS MADE WITH BOTH TREATED AND UNTREATED ASPHALTS. THESE CONDITIONS CONSIST OF A RANGE OF AGGREGATES, ASPHALTS, ASPHALT CONTENTS, AND VOID CONTENTS. THE ABRASION DEVICE USED WAS DEVELOPED BY THE MATERIALS AND RESEARCH LABORATORY OF THE CALIFORNIA DIVISION OF HIGHWAYS. THE EFFECT OF DENSITY WAS DEMONSTRATED RATHER STRIKINGLY ON RESISTANCE TO RAVELING. NO SIGNIFICANT EFFECT WAS INDICATED OF VARYING THE CONCENTRATION OF SILICONE. NO SIGNIFICANT RAVELING WAS INDICATED FOR GOOD AND INTERMEDIATE AGGREGATES WHEN THE MIX WAS COMPACTED TO 10 PERCENT VOIDS OR LESS. WHEN COMPACTED TO 10 TO 15 PERCENT VOIDS RAVELING WAS THE SAME FOR SILICONE TREATED ASPHALT AS FOR UNTREATED ASPHALT. RAVELING OCCURED AT ALL VOIDS CONTENTS TESTED FOR PORE AGGREGATE. RAVELING WAS THE SAME FOR SILICONE TREATED ASPHALT AS FOR UNTREATED ASPHALT.

  • Supplemental Notes:
    • pp 1-19, 8 FIG, 2 TAB, 12 REF
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  USA  76011
  • Authors:
    • Gallaway, B M
    • Vavra, G R
  • Publication Date: 1967-8

Subject/Index Terms

Filing Info

  • Accession Number: 00210774
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 24 1994 12:00AM