Improving the accuracy and usability of Iowa falling weight deflectometer data : [summary].

Details

• Creators:
  Ceylan, Halil ; Gopalakrishnan, Kasthurirangan ; Kim, Sunghwan
• Corporate Creators:
  Iowa State University. Institute for Transportation
• Subject/TRT Terms:
  • Falling weight deflectometers
  • Accuracy
  • Asset management
  • Pavement layers
  • Hot mix asphalt
  • Portland cement concrete
  • Overlays (Pavements)
  • Backcalculation
  • Software
• Publication/ Report Number:
  InTrans Project 11-415
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Corporate Publisher:
  Iowa State University. Institute for Transportation
• Description:
  Highway agencies periodically evaluate the structural condition of roads as part of their routine maintenance and rehabilitation activities. The falling-weight deflectometer (FWD) test measures road surface deflections resulting from an applied impulse loading, simulative of a truck passing on the highway. The measured surface deflections are utilized to determine pavement layer stiffnesses through a backcalculation type structural analysis.
  
  Although the Iowa Department of Transportation (DOT) has been collecting the FWD data on a regular basis, the pavement layer moduli backcalculation techniques used so far have been cumbersome and time consuming. More efficient and faster methods in FWD test data analysis were deemed necessary for routine analysis.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26283/dot_26283_DS1.pdf
• File Type:
  [PDF - 448.70 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:a4830a7ccd4be7ebba13066b08e2d247a05a047764603433e632d2786f7bb4010ccd7363637ce3560455dcb15b3ca86b0fba0adea786822b19598655dd8daf51