PRACTICAL REALITIES AND CONCERNS REGARDING PAVEMENT EVALUATION

The state-of-the-art of pavement evaluation has advanced considerably over the past 30 years. Strength measurement equipment has progressed from the CBR probe and the plate-bearing test to the dynamic cone penetrometer. In situ and nondestructive test methods have advanced from the test pit and the Benkelman beam to ground penetrating radar and the falling weight deflectometer. Analytical methods have evolved from the Westergaard equation to mechanistic design based on elasticity and viscoelasticity. This paper will address selected issues, such as spatial and seasonal variation in the properties of materials, laboratory testing methods, and field test procedures. The reasons why we are having difficulty comparing field measurements and predictions based on laboratory tests will be discussed. The need for improved pavement performance criteria and better constitutive models will be assessed. Methods for performing back-calculation will be reviewed, and some suggestions for improvement of these methods will be suggested.

Language

  • English

Media Info

  • Features: Figures; References;
  • Pagination: p. 19-46
  • Serial:
    • Volume: 1

Subject/Index Terms

Filing Info

  • Accession Number: 00728631
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Nov 27 1996 12:00AM