OBSERVED LONG-TERM WATER CONTENT CHANGES IN FLEXIBLE PAVEMENTS IN A MODERATE CLIMATE

A comprehensive instrumentation system was installed at four sties across the state of Tennessee to monitor seasonal variations in the environmental factors affecting flexible pavement response. This paper presents some selected findings obtained from over five years of continuous data collection. The data included temperature and water content of the various pavement layers, and weather information. Falling weight deflectometes (FWD) tests were used to observe the pavement response during different seasons. The measured seasonal variations in subgrade and base water content were observed to be small. Consistent with these observations, the seasonal variations in FWD back calculated subgrade modulus were small, suggesting that these effects may not be important in the design of pavements in moderate climates. Since the pavement systems were new construction, little pavement distress was observed over the study period. However, as the pavements age, water infiltration may increase leading to greater water content changes in the unbound materials.

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

  American Society of Civil Engineers

  Geo Institute, 1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Zuo, G
  • Drumm, E C
  • Meier, R W
  • Rainwater, N R
  • Marshall, C
  • Wright, W C
• 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;
• Pagination: 10 p.
• Serial:
  • ASCE Geotechnical Special Publication
  • Issue Number: 126
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Climate; Falling weight deflectometers; Flexible pavements; Infiltration; Information systems; Moisture content; Pavement layers; Pavement performance; Seasons; Subgrade (Pavements); Temperature; Water; Weather conditions
• Geographic Terms: Tennessee
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00988000
• Record Type: Publication
• ISBN: 0784407444
• Report/Paper Numbers: Volume 1
• Files: TRIS
• Created Date: Mar 28 2005 12:00AM