Falling Weight Deflectometer and Life Cycle Cost Analysis of a Major Urban Arterial Roadway Rehabilitated Using a Foamed Asphalt Stabilized Base

Marine Way in Burnaby, British Columbia is a major commuting route in Greater Vancouver. The roadway is currently subjected to Annual Average Daily Traffic (AADT) over 20,000 vehicles. As such, there was emphasis for construction activities to minimize delays to the travelling public. The Falling Weight Deflectometer (FWD) was used extensively in the design, construction, and post-construction phases of the project. A Life Cycle Cost Analysis (LCCA) suggested that the use of reclamation and base stabilization would provide significant savings from the alternate options. The rehabilitation strategy considered not only the long term road rehabilitation solutions but also environmental impacts and delays to the traveling public. The road was reconstructed in 2011 utilizing full depth reclamation with a Foamed asphalt Stabilized Base (FSB). During the construction phase of this project, the FWD was used to test the various stages of the foamed asphalt process, particularly at the top of the FSB surface, and at the completed asphalt surface. This data was used to verify the AASHTO design layer coefficient of the FSB layer. This case study documents the rehabilitation option selection process, construction impact mitigation measures and provides the economic justification for proceeding with the selected rehabilitation method. (A)

Language

  • English

Media Info

  • Pagination: p. 165-85
  • Monograph Title: Proceedings of the Fifty-Seventh Annual Conference of the Canadian Technical Asphalt Association: Vancouver, British Columbia November 2012

Subject/Index Terms

Filing Info

  • Accession Number: 01494232
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: ITRD, TAC
  • Created Date: Sep 24 2013 12:57PM