COMPARISON TESTS OF STABILIZING MATERIALS USING THE ROLLING LOAD MACHINE

RESULTS ARE DESCRIBED OF LABORATORY TESTS ON FULL-SCALE PAVEMENT STRUCTURE HAVING VARIOUS TREATED AND UNTREATED LAYERS SURFACED WITH ASPHALTIC CONCRETE. THE TESTS WERE MADE BY MEANS OF A UNIQUE, LARGE CAPACITY ROLLING-LOAD TESTING MACHINE. THE PERFORMANCE OF TREATED SANDSTONE BASE COURSES WERE COMPARED WITH UNTREATED SANDSTONE AND LIMESTONE BASES. A ROLLING LOAD WAS APPLIED THROUGH A SINGLE TRUCK TIRE TO THE SURFACE AREA OF A SPECIMEN BY A RECIPROCATING LONGITUDINAL MOTION OF THE WHEEL AT 20 CYCLES PER MINUTE AND A SIMILAR LATERAL MOTION OF ABOUT, EITHER 3 OR 12 CYCLES PER HOUR, DEPENDING ON THE TRACKING WIDTH. THE PERMANENT VERTICAL DEFORMATION WAS PERIODICALLY MEASURED AT THE SURFACE AND AT EACH INTERFACE OF THE LAYERS COMPRISING THE PAVEMENT SYSTEM. ALL SPECIMENS WERE SUPPORTED BY 22 INCHES OF A-6/8/ SOIL AND WERE SURFACED WITH EITHER 1 OR 3 INCHES OF ASPHALTIC CONCRETE. THE FOLLOWING CONCLUSIONS WERE PRESENTED' /1/ POOR QUALITY SANDSTONE BASE COURSES /LOS ANGELES WEAR OF 70-85 PERCENT/, TREATED WITH THE VARIOUS STABILIZING MATERIALS USED, GENERALLY WITHSTOOD A RELATIVELY LARGE NUMBER OF REPETITIONS OF THE TEST LOAD QUITE WELL AND PERFORMED BETTER THAN UNTREATED LIMESTONE BASES, /2/ TREATMENT OF THE SANDSTONE BASE COURSES GREATLY IMPROVED THE UNIFORMITY OF THEIR PERFORMANCE, /3/ ONLY A VERY SMALL PART OF THE TOTAL PAVEMENT DEFORMATION OCCURRED IN THE ROADBED SOIL, AND /4/ SPECIMENS HAVING PORTLAND-CEMENT AND ASPHALT-CEMENT TREATED BASES SHOWED THE BEST PERFORMANCE FOLLOWED IN ORDER, BY THOSE HAVING ASPHALT-EMULSION TREATED, UNTREATED LIMESTONE AND UNTREATED SANDSTONE BASES.

  • Supplemental Notes:
    • Hpr-1/2/, STATE 1, BPR 2
  • Corporate Authors:

    West Virginia University, Morgantown

    Morgantown, WV  United States  26506

    West Virginia State Road Commission

    1900 Kanawha Boulevard East
    Charleston, WV  United States  25305-0440
  • Authors:
    • Worrell, D T
  • Publication Date: 1966-7

Subject/Index Terms

Filing Info

  • Accession Number: 00214440
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Nov 1 1994 12:00AM