HIGHWAY TEST TRACK: VOLUME 3 EXPERIMENTAL RING NO 3

THREE DIFFERENT KINDS OF BASE MATERIALS OF VARYING BASE THICKNESSES WERE TESTED AT WASHINGTON STATE UNIVERSITY TEST TRACK ON RING #3 DURING THE FALL OF 1967 AND SPRING OF 1968. TWELVE 18-FOOT TEST SECTIONS CONSISTING OF 4.5, 7.0, 9.5 AND 12 INCHES OF UNTREATED CRUSHED ROCK SURFACING TOP COURSE BASE; 3.0, 5.0, 7.0, AND 9.0 OF EMULSION TREATED CRUSHED SURFACING TOP COURSE BASE AND 0.0, 2.0, 3.5, AND 5.0 INCHES OF SPECIAL NON-FRACTURED SCREENED AGGREGATE ASPHALT TREATED BASE WERE TESTED. THE BASES WERE COVERED BY A UNIFORM 3.0 INCH THICK CLASS "B" ASPHALT CONCRETE WEARING COURSE. THE PAVEMENT STRUCTURE WAS BUILT ON A CLAY-SILT SUBGRADE. TESTING TO DESTRUCTION WAS PERFORMED AND EACH SYSTEM EVALUATED. CONCLUSIONS REACHED INCLUDED: (1) THE TEST TRACK IS CAPABLE OF DUPLICATING PREVIOUS RESULTS; (2) BASE EQUIVALENCIES WERE DEVELOPED; (3) FALL FAILURES WERE DIFFERENT THAN SPRING FAILURES, (4) THE SPECIAL AGGREGATE ASPHALT TREATED BASE HAS BETTER LOAD CARRYING ABILITY; AND (5) THE ENVIRONMENTAL CONDITIONS MAY BE ONE OF THE MOST IMPORTANT LONGEVITY FACTORS IN PAVEMENT LIFE. /AUTHOR/

  • Corporate Authors:

    Washington State University, Pullman

    Department of Civil and Environmental Engineering
    P.O. Box 642910
    Pullman, WA  United States  99164-2910

    Washington State Department of Highways

    Olympia, WA  United States 

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • KRUKAR, M
    • Cook, J C
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00205371
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Y-993
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Nov 18 1970 12:00AM