PAVEMENT DEFLECTION MEASUREMENT-DYNAMIC - A FEASIBILITY STUDY, FINAL REPORT

THE FEASIBILITY OF DEVELOPING A DEVICE OR TECHNIQUE TO PROVIDE RAPID MEASUREMENT OF PARAMETERS INDICATIVE OF ROADWAY CONDITION OF STRUCTURAL CAPACITY IS DETERMINED. CURRENTLY EXISTING EQUIPMENT IS INADEQUATE FOR MAKING MEANINGFUL MEASUREMENTS WITH SPEED AND CONVENIENCE. CONSEQUENTLY, A NEW SYSTEM CALLED "IMPULSE TESTING" HAS BEEN PROPOSED AND ITS CONCEPTS POVED IN THIS STUDY. THIS SYSTEM INCORPORATES NEW TECHNIQUES OF NONDESTRUCTIVE TESTING, AND IS ADAPTABLE TO MECHANIZATION FOR AUTOMATIC OPERATION. THE SYSTEM IS BASED ON THE DEFLECTION OF THE PAVEMENT UNDER IMPULSE LOADING, AND ALSO ON THE ENERGY PROPAGATION CHARACTERISTICS OF THE PAVEMENT. THESE TWO PARAMETERS ARE COMBINED TO FORMULATE A QUANTITY WHICH IS CALLED THE IMPULSE INDEX AND WHICH HAS A HIGH DEGREE OF CORRELATION WITH THE STRUCTURAL PROPERTIES OF THE PAVEMENT. /AUTHOR/

• Supplemental Notes:
  • Highway ResEARCH SECTION PUBL H-32, 51 PP
• Corporate Authors:

  Washington State University, Pullman

  Department of Civil and Environmental Engineering
  P.O. Box 642910
  Pullman, WA  United States  99164-2910
• Authors:
  • Brands, F
  • Cook, J C
• Publication Date: 1970-6

Subject/Index Terms

• TRT Terms: Automatic control; Deflection; Energy; Evaluation; Feasibility analysis; Impulse tests; Impulses (Mechanics); Load tests; Measurement; Nondestructive tests; Pavement performance; Pavements; Structural analysis
• Uncontrolled Terms: Parameters; Structural adequacy
• Old TRIS Terms: Impulse testing; Impulses; Pavement deflection
• Subject Areas: Energy; Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00217033
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 23 1970 12:00AM