USING SEISMIC MODULI IN STRUCTURAL DESIGN OF FLEXIBLE PAVEMENTS

In many current procedures for structural design of pavements, an accurate determination of layer moduli is required. With the onset of the movement toward the 2002 Mechanistic Pavement Design, investigating the feasibility of supplanting the existing methods with more mechanistic approaches would be desirable. Nondestructive testing techniques are widely used to determine moduli of pavements, the critical strains and, thus, to estimate the remaining lives of pavement systems. A nondestructive testing device, the Seismic Pavement Analyzer (SPA), whose operating principle is based on generating and detecting seismic waves in a layered medium can be used for this purpose. Seismic methods to provide fundamentally-correct linear-elastic moduli of different layers. To incorporate in pavement design and analysis, seismic moduli of different layers have to be adjusted to represent moduli at strain and stress levels that are close to those applied by truck traffic. To do so, the nonlinear and viscoelastic behaviors of different layers should be accurately determined. In this paper, the process of using seismic data and laboratory tests to determine design modulus values and an attempt to validate the process are presented. Also included is a validation of the results based on FWD measurements.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0784407444
• Corporate Authors:

  American Society of Civil Engineers

  Geo-Institute
  Reston, VA  United States  20191-4400
• Authors:
  • Abdallah, I
  • Nazarian, S
  • Yuan, D
• Conference:
  • Geotechnical Engineering for Transportation Projects, Geo-Trans 2004
  • Location: Los Angeles, California
  • Date: 2004-7-27 to 2004-7-31
• Publication Date: 2004

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 10 p.
• Serial:
  • ASCE Geotechnical Special Publication
  • Issue Number: 126
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Flexible pavements; Mechanical properties; Modulus of elasticity; Nondestructive tests; Pavement layers; Pavement performance; Pavements; Seismic prospecting; Service life; Strain (Mechanics); Stress relieving; Structural design; Truck traffic
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00987989
• Record Type: Publication
• ISBN: 0784407444
• Report/Paper Numbers: Volume I
• Files: TRIS
• Created Date: Mar 25 2005 12:00AM