AN INVESTIGATION OF DESIGN METHODS FOR ASPHALTIC PAVING MIXTURES

THE INVESTIGATION INCLUDED A COMPARISON OF FIVE ASPHALT MIX DESIGN METHODS WITH RESPECT TO: (1) THE JOB ASPHALT CONTENTS WHICH WOULD BE OBTAINED ON A GIVEN AGGREGATE MATERIAL OF SPECIFIED GRADING COMBINED WITH A GIVEN TYPE AND GRADE OF ASPHALT, (2) THE METHODS USED TO EVALUATE THE SIGNIFICANT PROPERTY OF STABILITY (I. E., THE RESISTANCE TO DEFORMATION OF AN ASPHALTIC PAVEMENT UNDER TRAFFIC LOADS), AND (3) THE EFFECT OF CHANGING COMPACTION METHODS ON THE RESULTS OBTAINED BY THE VARIOUS MECHANICAL STABILITY TESTS. THE MIX DESIGN METHODS CONSIDERED INCLUDED: HUBBARD-FIELD, CORPS OF ENGINEERS, BUREAU OF PUBLIC ROADS, STATE OF CALIFORNIA, AND ASPHALT INSTITUTE. THE MATERIAL SELECTED FOR THIS COMPARISON PROGRAM WAS A DENSELY GRADED DISINTEGRATED GRANITE COMBINED WITH A ROAD OIL MEDIUM CURED LIQUID ASPHALT (ROMC-5). IT WAS SELECTED BECAUSE: (1) A SECTION OF A MAIN HIGHWAY IN CALIFORNIA HAS BEEN IN OPERATION FOR 17 YEARS UNDER MAIN-LINE TRAFFIC AND THE PAVEMENT IS STILL IN EXCELLENT CONDITION, (2) THE LOW VISCOSITY CHARACTERISTICS OF THE ROMC-5 ASPHALT, EVEN AFTER EXTENDED CURING, TENDED TO MAGNIFY DIFFERENCES BETWEEN STABILITY TEST METHODS, AND (3) FIELD SPECIMENS WERE READILY OBTAINABLE BY FIELD CORING OPERATIONS.

  • Supplemental Notes:
    • Vol 53, pp 1079-1102
  • Authors:
    • Vallerga, B A
    • Zube, E
  • Publication Date: 1953

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  • Accession Number: 00210976
  • Record Type: Publication
  • Source Agency: Highway Research Board Bibliography
  • Files: TRIS
  • Created Date: Apr 21 1994 12:00AM