EFFECT OF SELECTED SOLVENTS ON THE VISCOSITIES AND OXYGEN CONTENTS OF ASPHALTS

ESTIMATION OF THE EFFECT OF AGING DURING SERVICE, ON THE PROPERTIES OF ASPHALTS IN ASPHALT-AGGREGATE MIXTURES IS A PROBLEM FACED BY HIGHWAY ENGINEERS. IT IS NOT FEASIBLE TO MEASURE THESE PROPERTIES IN SITU. CURRENT PRACTICE IS THE SOLVENT EXTRACTION OF THE ASPHALT FROM THE MIXTURE AND SUBSEQUENT REMOVAL OF THE SOLVENT BY DISTILLATION. BENZENE (A), BENZENE-ETHANOL MIXTURE (B), TRICHLOROETHYLENE (C), AND 1,1,1-TRICHLOROETHANE (D) WERE USED TO DETERMINE THEIR EFFECTS AS SOLVENTS ON A SERIES OF SIX ASPHALT CEMENTS USED IN THE CONSTRUCTION OF BITUMINOUS PAVEMENTS. MAGNITUDE OF HARDENING (MEASURED BY VISCOSITY AT 25 DEGREE C) INCREASED IN THE ORDER (A) THROUGH (D). OXYGEN CONTENT WAS DETERMINED BY NEUTRON ACTIVATION ANALYSIS IN ORIGINAL AND RECOVERED ASPHALTS, IN GENERAL, THE RECOVERED ASPHALTS HAD LOWER OXYGEN CONTENTS THAN THE REFERENCE ASPHALTS. /AUTHOR/

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  • Supplemental Notes:
    • Vol 41, No 6, PP 823-826
  • Authors:
    • Abu-elgheit, M A
    • Hancock, C K
    • Traxler, R N
  • Publication Date: 1969-5

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  • Accession Number: 00211413
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 28 1994 12:00AM