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Research Reports

Pavement Deflection Measurement - Dynamic Phase IV: Final Report

Description: Tests were conducted on various pavements to investigate the correlation between measurements obtained using the Impulse Index Computer and pavement condition as determined by other means. Benkelman Beam deflection measurements and Impulse Index measurements are compared along with Washington State Pavement Rating System results. Effect of temperature on the apparent Impulse Index is evaluated.

  • Date Published: February, 1975
  • Publication Number: WA-RD 3.5
  • Last Modified: July 14, 2007
  • Authors: Frank W. Brands, John C. Cook.
  • Originator: Washington State University. College of Engineering. Research Division.
  • # of Pages: 214 p., 2,525 KB (PDF)
  • Subject: Accelerometers, Benkelman beam, Deflection, Excitation, Flexible pavements, Impulse tests, Measurement, Measuring instruments, Nondestructive tests, Pavements.
  • Keywords: Benkelman beam, deflection tests, impulse testing, impulse index, pavement deflection, pavement evaluation, pavement maintenance.
  • Related Publications: Pavement Deflection Measurement - Dynamic: A Feasibility Study, (WA-RD 3.1).
    Pavement Deflection Measurement - Dynamic, Phase II, (WA-RD 3.2).
    Deflection Measurement - Dynamic, Phase III, WSU Impulse Index Computer, Section I, (Suitcase), (WA-RD 3.3).
    Pavement Deflection Measurement - Dynamic, Phase III, Section II, (Vehicle), (WA-RD 3.4).
    Pavement Deflection Measurement – Dynamic, Phase II, Section II (Vehicle): Final Report, (WA-RD 3.4A).

This abstract was last modified April 29, 2008