Measuring Thermal Effect in the Structural Response of Flexible Pavement Based on Field Instrumentation

Temperature affects the structural response of flexible pavement in two ways. Firstly, the pavement material expands and contracts for temperature variations and produces thermal strain. Secondly, when pavement temperature changes, the modulus of the asphalt concrete (AC) changes and consequently, the stress-strain responses for a particular vehicle also change. This study describes both of these phenomenon based on field instrumentation on an interstate pavement, Interstate 40 (I-40), in the state of New Mexico, United States of America. Continuous horizontal strains at the bottom of the AC and vertical stresses at different depths of the pavement are measured for an eighteen-wheel vehicle from June 8 to November 3, 2012. The horizontal strains are measured with installed Horizontal Asphalt Strain Gauges (HASGs) and the vertical stresses with Earth Pressure Cells (EPCs). Results show that the vertical stresses and the horizontal strains at the bottom of AC layer increase up to 1.88 and 1.41 times, respectively, in the afternoon than those in the morning for the climate condition in New Mexico for the above mentioned period.

• Record URL:
  http://www.ijprt.org.tw/index.php?page=issue&volume=6&issue=4
• Record URL:
  http://www.ijprt.org.tw/reader/pdf.php?id=309
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19966814
• Supplemental Notes:
  • Abstract used by permission of publisher.
• Authors:
  • Islam, Md Rashadul
  • Tarefder, Rafiqul A
• Publication Date: 2013-7

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: pp 274-279
• Serial:
  • International Journal of Pavement Research and Technology
  • Volume: 6
  • Issue Number: 4
  • Publisher: Chinese Society of Pavement Engineering
  • ISSN: 1996-6814
  • EISSN: 1997-1400
  • Serial URL: http://www.ijprt.org.tw/index.php
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Asphalt concrete; Field tests; Flexible pavements; Live loads; Pavement performance; Strain measurement; Temperature; Thermal stresses
• Geographic Terms: New Mexico
• Subject Areas: Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01490362
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 20 2013 5:24PM