Stabilization of Peat Deposits for Roadway Construction and Remediation

Peat, a soil with very high organic content, is often encountered in roadway construction in Ohio, especially in Ohio Department of Transportation (ODOT) Districts 1, 2, 4, 6 and 12. In contrast to other problematic soils such as soft clays, the majority of deformation in peat is caused by secondary compression (volume changes by soil particle rearrangement), instead of primary compression (pore water dissipation). Therefore, the deformation of roadways on peat is a long-term phenomenon, and it evolves with time. Roadways constructed on peat often experience premature distress in the form of rutting, cracking and differential settlement. The goal of this study is to identify potential remediation strategies for settlement control of pavements on Ohio peats and to evaluate the performance of the most promising and cost effective strategy with field experiments. The outcome of this research is expected to provide an alternative option in ODOT's toolbox for peat treatment in roadway construction and maintenance. Engineers from the ODOT Central Office or district offices can also refer to the guidelines and recommendations developed in this research in the design and implementation of the polymer injection method, which has the potential to greatly reduce ODOT's pavement maintenance costs in terms of material, labor, and time in areas where peat deposits are encountered. The project has been divided into two phases. Phase I of the project aims to identify the potential ground improvement technologies which are applicable to roadways on peat deposits, to assess the cost-benefit of each technology and to rate each technology considering the various selection factors. ODOT will review the cost benefit analysis and decide whether it will beneficial to move forward to Phase II. Phase II will evaluate the effectiveness of the selected technologies with a comprehensive field test plan and provide recommendations to ODOT on the future implementation of the technology.


  • English


  • Status: Completed
  • Contract Numbers:



  • Sponsor Organizations:

    Federal Highway Administration, Ohio Division

    200 North High Street
    Room 328
    Columbus, OH  United States  43215
  • Project Managers:

    Noble, Jack

  • Performing Organizations:

    University of Akron

    College of Engineering
    Akron, OH  United States  44325
  • Principal Investigators:

    Tao, Junliang

  • Start Date: 20141101
  • Expected Completion Date: 0
  • Actual Completion Date: 20150901
  • Source Data: RiP Project 37233

Subject/Index Terms

Filing Info

  • Accession Number: 01539803
  • Record Type: Research project
  • Source Agency: Ohio Department of Transportation
  • Contract Numbers: 26677, 135027
  • Files: RiP, STATEDOT
  • Created Date: Oct 2 2014 1:00AM