ROAD RESPONSES TO VIBRATION TESTS

THE DYNAMIC PROPERTIES OF ROAD PAVEMENTS ARE MEASURED WITH EQUIPMENT USING SMALL VIBRATIONAL FORCES AFTER VERIFICATION OF THE CONDITION OF ELASTIC LINEARITY IN PAVEMENT BEHAVIOR. WITH MINOR MODIFICATIONS, THIS EQUIPMENT IS SUITABLE FOR WAVE PROPAGATION, ATTENUATION, AND IMPEDANCE MEASUREMENTS. APPROXIMATE SIMPLE METHODS, VERIFIED IN PRACTICE, HAVE BEEN EMPLOYED TO DETERMINE THE ATTENUATION IN, AND YOUNG' MODULI OF, THE VARIOUS ROAD LAYERS, WHILE A SEVEN-PARAMETER MECHANICAL MODEL WAS DEVISED TO EXPLAIN THE EXPERIMENTAL IMPEDANCE CURVES. A FOURIER ANALYSIS WAS APPLIED TO THE RESULTS OF IMPEDANCE MEASUREMENTS MADE OVER A WIDE FREQUENCY RANGE TO PREDICT ROAD DEFLECTIONS CAUSED BY AN IMPULSE FUNCTION OF ANY SHAPE, AND THE TREATMENT WAS VERIFIED EXPERIMENTALLY. RESULTS FROM WAVE PROPAGATION, ATTENUATION, AND IMPEDANCE MEASUREMENTS WERE COMBINED TO EVALUATE ROAD DEFLECTIONS UNDER A MOVING WHEEL LOAD. /AUTHOR/

  • Supplemental Notes:
    • Vol 96, No SM6, PROC PAPER 7709, PP 2099-2124
  • Authors:
    • SZENDREI, M E
    • Freeme, C R
  • Publication Date: 1970-11

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00207215
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 12 1971 12:00AM