Evaluation of Asphalt Concrete Layer Response Using Asphalt Strain Gauges and Fiber Optic Strain Gauges

Four flexible pavements were constructed on the north side for Construction Cycle 7 (CC7) at the Federal Aviation Administration’s (FAA) National Airport Pavement Test Facility (NAPTF) to develop flexible perpetual pavement design criterion and validate/refine/modify the fatigue model for asphalt concrete (AC). H-Bar asphalt strain gauges (ASG) were installed in four test sections to measure transversal and longitudinal strain at the bottom of the AC layer. Fiber optic strain gauges (FOSG) were also installed in one of the test sections (8-inch thick asphalt concrete layer). Full-scale tests were performed on these pavement test sections under heavy aircraft gear loads using the National Airport Pavement Test Vehicle (NAPTV). Three traffic speeds, four gear configurations and three wheel loads were used to evaluate the mechanical response of the AC layer. It was found that response of fiber optic strain gauges is comparable to the asphalt strain gauge. The effects of traffic speed, gear configuration, and wheel load on the asphalt concrete strain were investigated. Strain basins were established based on five wander positions.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 42-53
  • Monograph Title: International Conference on Transportation and Development 2016: Projects and Practices for Prosperity

Subject/Index Terms

Filing Info

  • Accession Number: 01606119
  • Record Type: Publication
  • ISBN: 9780784479926
  • Files: TRIS, ASCE
  • Created Date: Jun 20 2016 3:02PM