ADAPTATION OF THE GENERAL AASHO ROAD TEST EQUATION TO ARKANSAS CONDITIONS

SERVICEABILITY AND DEFLECTION CHARACTERISTICS WERE DETERMINED FOR 27 TEST SITES ON VARIOUS ARKANSAS HIGHWAYS. THE CHLOE PROFILOMETER WAS USED TO QUANTITATIVELY RATE THE SERVICEABILITY OF THE TEST SECTIONS. THE BENKELMAN BEAM, EQUIPPED WITH A RECORDER TO PROVIDE A CONTINUOUS ANALOG TRACE OF THE DEFORMATION CURVE, WAS USED AS AN INDICATOR OF PAVEMENT COMPOSITE STRENGTH. AREAL AND LINEAR PARAMETERS OF THE DEFLECTION CURVE CHARTS WERE DETERMINED. THE SERVICEABILITY MEASUREMENTS DID NOT INDICATE ANY DEFINITE TRENDS FOR THE TWO MEASUREMENT PERIODS. A MATHEMATICAL MODEL WAS DEVELOPED TO DESCRIBE BENKELMAN BEAM DEFLECTION TRACES. THE DEFLECTION PARAMETERS WERE USED TO DETERMINE THE RESISTANCE OF PAVEMENT COMPONENTS TO SHARP CURVATURE (STIFFNESS). A PROCEDURE TO EVALUATE THE AASHO MATERIAL COEFFICIENTS BY THE USE OF THE STIFFNESS COEFFICIENTS WAS PRESENTED. CALIFORNIA R-VALUE DETERMINATIONS WERE MADE FOR VARIOUS GROUPS OF ARKANSAS SOILS. GRANULAR MATERIALS (CRUSHED STONE, SAND GRAVEL) EXHIBITED STATISTICALLY CONSTANT R-VALUES FOR EACH GROUP. A MODIFICATION OF THE TEST PROCEDURE WAS SUGGESTED TO ALLOW COMPLETE SATURATION OF SILT SOILS. THERE WAS NO NOTICEABLE CORRELATION BETWEEN THE R-VALUE TEST RESULTS AND THE AASHO MATERIAL COEFFICIENTS. /AUTHOR/

  • Corporate Authors:

    University of Arkansas, Fayetteville

    Fayetteville, AR  United States 

    Arkansas State Highway Department

    Little Rock, AR  United States  72203

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • LeFevre, E W
    • Helliger, W L
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00205368
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Report/Paper Numbers: Hrc-20
  • Files: TRIS, STATEDOT
  • Created Date: Sep 28 1970 12:00AM