New Advances in Novel Polymeric Alloy Geocell-Reinforced Base Course for Paved Roads

Seventh Street in Nisku industrial hub of Alberta was in very poor serviceability condition for the heavy traffic of the industrial area. In 2012, the County of Leduc decided to rehabilitate the road structure with asphalt pavement on cement treated base (CTB). Typical to most of the roads in cold climatic regions the conventionally designed CTB work satisfactorily at the beginning but start to show signs of failure as soon as the first freeze-thaw cycle completes with block cracks and other forms of pavement distress. To find a reliable solution to the problem the County decided to install a trial section with a Nano Polymeric Alloy (NPA) geocell-reinforced granular base and compare the performance over time with the conventional practice of CTB. Commercially available higher strength geocells made from NPA material were used to reinforce the base course. Two test sections were constructed over a total stretch of 1000m of the road, 500m each of the CTB and NPA geocell-reinforced granular base on either side of the railway track. The University of Alberta conducted initial research and monitoring on the test sections. During the following years, non-destructive testing and monitoring of both the sections was carried out by the Leduc County employing independent organizations. Monitoring of the tests sections conducted after consecutive freeze-thaw season have demonstrated the increasing benefit of using NPA geocells over CTB. This paper discusses the construction, immediate tests and monitoring done over three years on the road and compares the performance based on the findings.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: 1 PDF file, 1.8 MB, 16p.
  • Monograph Title: TAC 2017: Investing in Transportation: Building Canada's Economy - - 2017 Conference and Exhibition of the Transportation Association of Canada

Subject/Index Terms

Filing Info

  • Accession Number: 01668454
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: ITRD, TAC
  • Created Date: May 3 2018 3:14PM