REPEATED LOAD TEST EVALUATION OF BASE COURSE MATERIALS

BASE COURSE MATERIALS EVALUATED INCLUDED SAND, SOIL- AGGREGATE, CRUSHED STONE AND CEMENT AND ASPHALT STABILIZED BASES. REQUIRED BASE COURSE THICKNESS WAS DETERMINED USING A THEORETICAL DESIGN PROCEDURE DEVELOPED DURING THIS INVESTIGATION. THE PROCEDURE CONSIDERS FATIGUE OF STABILIZED LAYERS AND RUTTING IN BASE AND SUBGRADE AND WAS CORRELATED WITH KNOWN PERFORMANCE OF THE AASHO ROAD TEST. BASE COURSE COEFFICIENTS FOR USE IN THE "AASHO INTERIM GUIDE TO THE DESIGN OF FLEXIBLE PAVEMENTS" WERE DETERMINED FOR A SELECTED NUMBER OF EQUIVALENT 18 KIP, SINGLE AXLE LOADINGS. PROPERTIES OF THE BASE COURSE MATERIALS WERE DETERMINED FROM RESULTS OF REPEATED LOAD TRIAXIAL AND FATIGUE TESTS. CYLINDRICAL SPECIMENS OF BASE COURSE MATERIAL WERE PLACED IN CONVENTIONAL TRIAXIAL CELLS AND SUBJECTED TO 100,000 LOAD REPETITIONS. THESE TESTS WERE PERFORMED USING A CONSTANT CONFINING PRESSURE AND A TRIANGULAR LOADING PULSE HAVING A DURATION OF 0.10 SECONDS. BOTH ELASTIC AND PLASTIC PROPERTIES OF MATERIALS WERE EVALUATED. ALL TESTS WERE PERFORMED WITH FREE DRAINAGE OF SPECIMENS. SUPPLEMENTRAY FATIGUE TESTS WERE PERFORMED ON 18-1/2 INCH DIAMETER SPECIMENS OF STABILIZED BASE MATERIALS. AN EVALUATION OF RUTTING CHARACTERISTICS OF BASE MATERIALS STUDIED WAS MADE USING THE RUT INDEX, WHICH CAN BE CALCULATED USING LABORATORY EVALUATED PLASTIC RESPONSES. /AUTHOR/

  • Supplemental Notes:
    • 120 PP
  • Corporate Authors:

    University of Georgia, Experiment

    Georgia Experiment Station
    Experiment, GA  United States 
  • Authors:
    • Barksdale, R D
  • Publication Date: 1972-5

Subject/Index Terms

Filing Info

  • Accession Number: 00233363
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 17 1973 12:00AM