Pilot study : rolling wheel deflectometer, falling weight deflectometer, and ground penetrating radar on New Hampshire roadways.

Details

• Creators:
  Smart, Aaron L.
• Corporate Creators:
  University of New Hampshire. Dept. of Civil Engineering
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Pavement management systems
  • Nondestructive tests
  • Ground penetrating radar
  • Falling weight deflectometers
  • Testing equipment
  • Thickness
  • Alternatives analysis
  • Deflection tests
  • Pavement performance
  • Pilot studies
• Publication/ Report Number:
  FHWA-NH-RD-14282N
• Resource Type:
  Tech Report
• Geographical Coverage:
  New Hampshire
• Corporate Publisher:
  New Hampshire. Dept. of Transportation
• Abstract:
  The New Hampshire Department of Transportation Pavement Management Section’s scope of work includes monitoring, evaluating, and ; sometimes forecasting the condition of New Hampshire’s 4,560 miles of roadway network in order to provide guidance on rehabilitation or ; preservation treatments. Pavement Management monitors rutting, cracking, ride quality, and several other road and pavement parameters using a ; 2009 PathRunner XP Model LG-23 road and pavement condition data collection vehicle. ; Supplemental methods to evaluate pavement structural capacity would enhance Pavement Management’s ability to forecast pavement ; performance. This project evaluated non-destructive testing methods to evaluate pavement thickness and deflection information by means of ; ground penetrating radar (GPR) and rolling wheel deflectometer (RWD) testing respectively. ; The GPR testing covered 115 miles and resulted with substantial variations in pavement thicknesses ranging from 4.0 to 12.0 inches. These ; predictions, when correlated with data from 35 ground cores, show an average accuracy of 6.5%. Although an initial purchase of a GPR system ; is costly, once in place, this testing is expected to cost $140 per lane mile compared to the cost of pavement core sampling at $10,000 per lane ; mile. ; The RWD test routes totaled 650 lane miles. Average deflections ranged from 6.4 to 19.2 mils and representative deflections ranged from 9.2 ; to 22.4 mils. Falling weight deflectometer (FWD) deflections were similar RWD deflections with the best average and representative ; deflection correlations occurring at an FWD load plate pressure of 110 psi. RWD advantages over FWD include continuous pavement ; deflection profiles, no significant disruption of traffic, and $5,700 savings per lane mile.
  More +
• Format:
  PDF
• Funding:
  14282N, X-A000(530)
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27792/dot_27792_DS1.pdf
• File Type:
  [PDF - 4.25 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:8b04b4c03045f0d4926b14c44bfddc13c7e5048f038d0d9719367d52b9989dac