Determine the Feasibility and Methodologies of Using Structural Data from the Traffic Speed Deflectometer in Network- and Project-Level Treatment Decision-Making

Details

• Creators:
  Scullion, Tom ; Dorsett, Garrett ; Liu, Wenting
• Corporate Creators:
  Texas A&M Transportation Institute
• Corporate Contributors:
  Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Traffic speed
  • Deflectometers
  • Pavement management systems
  • Pavements
  • Deflection
  • Decision making
  • Structural analysis
  • Data analysis
  • Falling weight deflectometers
  • Literature reviews
  More +
• Publication/ Report Number:
  FHWA/TX-25/0-7107-R1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Edition:
  August 2021–August 2024
• Corporate Publisher:
  Texas A&M Transportation Institute
• Abstract:
  The traffic speed deflectometer (TSD) offers TxDOT a highway-speed, nondestructive testing tool, which can significantly assist TxDOT districts with development of their four-year plans. In this project, the TSD was initially compared to the deflections measured by the falling weight deflectometer (FWD). Good correlation was observed in the maximum deflections reported by both devices. However, because the loading methods are significantly different, the resultant shapes of the deflection bowls are also different. To assist with developing TxDOT maintenance plans, the data filters evaluated in this report should be used to classify projects based on structural strength (as measured by the TSD) and surface conditions (e.g., rutting, cracking, etc.). Because of TxDOT’s extensive maintenance program, many roadways may appear to be in reasonable condition but are in fact structurally weak. This information should be provided to TxDOT district teams responsible for developing the four-year plans.
• Format:
  PDF
• Funding:
  0-7107
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/80604/dot_80604_DS1.pdf
• File Type:
  [PDF - 6.92 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:a71a1d2723126d88e182bff2f517b179e28a0bcd8a65ac5c41c41122240ee1cd144582afd2dfca2c180d8c088f960fb831751789d5f52a595accbecbbb82ff78