EVALUATION OF CONCRETE PAVEMENT CONDITIONS AND DESIGN FEATURES USING LTPP FWD DEFLECTION DATA

The Long Term Pavement Performance (LTPP) study uses falling weight deflectometers (FWDs) to collect data. As part of a study sponsored by the Federal Highway Administration, load transfer efficiencies (LTEs) were calculated for all the test points of each section of the LTTP GPS 3, 4, and 5 experiments. From statistical analysis, it was found that the doweled joints have significantly higher LTEs that the non-doweled joints. Voids at the slab joints and corners were computed by examining the deflection data of the joint and corner tests at different load levels. The loss of support was then expressed as the percentage of joints or slab corners with voids for each LTPP concrete pavement test section. By examining the ratio of the maximum deflection at the mid slab test location versus the edge locations, the concrete shoulders were found to provide significantly greater edge support than asphalt shoulders based on a one tailed student t-test.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0803128584
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Jiang, Y J
  • Tayabji, S D
• Conference:
  • Symposium on Nondestructive Testing of Pavements and Backcalculation of Moduli: Third Volume
  • Location: Seattle, Washington
  • Date: 1999-6-30 to 1999-7-1
• Publication Date: 2000

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 281-294

Subject/Index Terms

• TRT Terms: Concrete pavements; Falling weight deflectometers; Load transfer; Pavement performance; Road shoulders; Slabs; Void ratios
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00801880
• Record Type: Publication
• ISBN: 0803128584
• Report/Paper Numbers: STP 1375
• Files: TRIS
• Created Date: Nov 10 2001 12:00AM