Optimization of a pavement instrumentation plan for a full-scale test road : evaluation.

Details

• Creators:
  Rice, Jennifer A.
• Corporate Creators:
  University of Florida. Dept. of Civil and Coastal Engineering
• Subject/TRT Terms:
  • Optimization
  • Instrumentation
  • Test sections
  • Evaluation
  • Fiber optics
  • Sensors
  • Data quality
  • Strain measurement
  • Temperature measurement
  • Costs
• Publication/ Report Number:
  BDV31-977-04
• Resource Type:
  Tech Report
• Geographical Coverage:
  Florida
• Corporate Publisher:
  Florida. Dept. of Transportation
• Abstract:
  A 2.5-mile, concrete test road is planned for construction by the Florida Department of Transportation (FDOT) in ; 2016. To support the goals of the test road, a comprehensive instrumentation system is required to provide ; reliable data over a long period. The unique challenges posed by the geographical location and configuration of ; the test pavement require sensors that can employ long sensor cables without compromising data quality and ; have limited susceptibility to damage from lightning strike. The research conducted for this report investigated ; the availability and performance of traditional and emerging instrumentation approaches for the embedded ; measurement of concrete strains and temperatures. Fiber optic sensors possess features that overcome the ; specific challenges of the proposed test pavement and were chosen for experimental evaluation alongside the ; copper-based sensors that have been routinely employed by the State Materials Office (SMO). The candidate ; strain sensors were initially evaluated in a series of non-embedded tests to assess their measurement capabilities, ; noise susceptibility, temperature sensitivity, and ease of installation and use. A small concrete test slab was then ; constructed for longer-term evaluation of the various sensor types in conditions similar to those of the proposed ; test road. The duration of the test slab experiments (several weeks) exposed the slab to environmentally-induced ; loads and dynamic wheel loads imposed by a Heavy Vehicle Simulator. The resulting strain and temperature ; measurements were analyzed to assess the accuracy, repeatability, and robustness of the sensors. The copper and ; fiber optic strain sensors yielded similar measurement results; however, the fiber optic sensors provided a more ; streamlined installation and setup process. The cost of the individual fiber optic sensors is higher than the copper ; sensors; however, the fiber optic sensors require fewer data acquisition (DAQ) units. A hybrid instrumentation ; plan (copper/fiber optic) is suggested to optimize instrumentation costs while ensuring the measurement needs ; and data quality requirements of the test pavement are met.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27247/dot_27247_DS1.pdf
• File Type:
  [PDF - 4.06 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:91d36d4c7bd9b5a0b3637f0976bf9d4d49a208a25226fb1bccc4fb82be0d99d5