Measuring Pavement Deflection at 55 MPH: The Rolling Wheel Deflectometer

Details

• Corporate Creators:
  United States. Federal Highway Administration
• Contributors:
  Grogg, Max
• Corporate Contributors:
  United States. Federal Highway Administration. Iowa Division Office
• Subject/TRT Terms:
  • Deflectometers
  • Deflection tests
  • Condition surveys
  • Technological innovations
• Publication/ Report Number:
  FHWA-IF-04-001
• Resource Type:
  Brief
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Federal Highway Administration
• Abstract:
  Prioritizing needs and targeting scarce highway funds are critical issues for highway officials. Highway engineers have many valuable tools to assess surface deterioration and overall condition of pavements in their transportation network. One of the newest tools is the Rolling Wheel Deflectometer (RWD). It is primarily designed to measure the structural capacity and stiffness of asphalt pavements at the network level. After years of testing, the Federal Highway Administration has developed the first prototype device for measuring pavement deflection data continuously at speeds matching the pace of traffic. The new device, called the Rolling Wheel Deflectometer (RWD), can measure deflections over hundreds of miles in a given day and provide a "structural map" of an entire highway network quickly and accurately. The RWD is designed to be a network-level screening device.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/59161/dot_59161_DS1.pdf
• File Type:
  [PDF - 112.40 KB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:1d4e6b039b20599705e9b71920a838f2bcf7d3a2a9a4f3f50287b021020b1bab2a1959e4a50029a91598d6e7a0910f8c13f458919485db575b5676f9be4c937d