Estimation of Remaining Pavement Life of Low-Volume Roads with Falling Weight Deflectometer Results: A Practical Method

A practical method to estimate the remaining pavement life of low-volume roads is presented that uses the results of falling weight deflectometer (FWD) measurements. The method was developed from observations of accelerated pavement tests, and additional field results from Transit New Zealand’s asset management database are presented. Methods currently used in Australia and New Zealand to predict the remaining life of pavements are based on linear elastic backcalculation of FWD tests with the association of Australian and New Zealand road transport and traffic authorities (Austroads) approach, in which the life of the pavement is related to the vertical compressive strain at the top of the subgrade. The vertical compressive subgrade strain is usually determined by linear elastic backcalculation of FWD tests. Industry has highlighted significant concern about the Austroads procedure in New Zealand and whether the traditional FWD analysis with the Austroads subgrade strain criterion can predict pavement life accurately. In response to industry concerns, accelerated pavement test results from the Canterbury Accelerated Pavement Testing Indoor Facility were used to develop a new pavement performance criterion that predicts rutting of a low-volume road. The remaining-life prediction procedure is based on central deflections from the FWD measurement results and uses the change in FWD test results between the start and end of the postcompaction period.

• Record URL:
  https://doi.org/10.3141/1989-72
• 
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=Estimation+of+Remaining+Pavement+Life+of+Low-Volume+Roads+with+Falling+Weight+Deflectometer+Results%3a+A+Practical+Method&author=S.+Werkmeister&author=D.+Alabaster&publication_year=2007
• Availability:
  • Find a library where document is available. Order URL: http://www.trb.org/Main/Public/Blurbs/158926.aspx
• Authors:
  • Werkmeister, Sabine
  • Alabaster, David
• Conference:
  • 9th International Conference on Low-Volume Roads
  • Location: Austin Texas, United States
  • Date: 2007-6-24 to 2007-6-27
• Publication Date: 2007

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 261-269
• Monograph Title: Low-Volume Roads 2007. Volume 2
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 1989
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Accelerated tests; Backcalculation; Deflection; Estimating; Falling weight deflectometers; Low volume roads; Pavement performance; Rutting; Service life; Subgrade (Pavements)
• Uncontrolled Terms: Vertical strain
• Geographic Terms: Australia; New Zealand
• Subject Areas: Data and Information Technology; Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 01051252
• Record Type: Publication
• ISBN: 9780309104630
• Files: TRIS, TRB, ATRI
• Created Date: Jun 8 2007 1:07PM