TRENDS OF PAVEMENT CHARACTERISTICS DURING TWELVE MONTHS OF A DESIGNED EXPERIMENT

SIGNIFICANT FINDINGS FROM THE FIRST HALF OF A COMPREHENSIVE TWO YEAR FIELD AND LABORATORY RESEARCH ARE PRESENTED. SIXTEEN EXPERIMENTAL SECTIONS WERE CONSTRUCTED AS PART OF A PRIMARY HIGHWAY PROJECT IN UTAH. THE EXPERIMENT EMPLOYS FIVE FACTORS AT TWO LEVELS, EACH INCORPORATED IN A ONE-HALF REPLICATE OF A 2 TO THE FIFTH FRACTIONAL FACTORAL EXPERIMENT. THE FIVE FACTORS ARE: THICKNESS OF SURFACE COURSE, THICKNESS OF BASE COURSE, RUBBER SOLID CONTENT, ASPHALT VISCOSITY TYPE, AND ASPHALT CONTENT. TESTS ON RECOVERED ASPHALT INCLUDED KINEMATIC VISCOSITY (140F), PENETRATION (77F), AND DUCTILITY (39.2F); ON PAVEMENT MIXTURE PROPERTIES DETERMINED FROM CORES CUT FROM THE PAVEMENT: STABILITY, DENSITY, AIR VOIDS, ULTIMATE COMPRESSIVE STRENGTH, STRAIN, MODULUS OF ELASTICITY, INDIRECT TENSILE STRENGTH, AND STRESS RELAXATION MODULUS, AND ON PAVEMENTS: SKID RESISTANCE, DEFLECTION, AND RUT-DEPTH. THE TIME TRENDS OF MOST OF THESE TESTS AND THE MAIN FACTORS HAVE BEEN PLOTTED. IN ADDITION TO THE FIVE MAIN FACTORS, TEST RESULTS ALSO INDICATE MANY CHANGES IN IMPORTANT PAVEMENT CHARACTERISTICS DURING THE 12-MONTH PERIOD. /AUTHOR/

  • Corporate Authors:

    University of Utah, Salt Lake City

    307 Park Building
    Salt Lake City, UT  USA  84112

    Utah State Department of Highways

    757 West Second South
    Salt Lake City, UT  USA  84104

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Darter, M I
    • Lai, J S
    • Vokac, R
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00206266
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: 903 & 910
  • Files: TRIS, USDOT
  • Created Date: Jan 11 1971 12:00AM