Development of A Design Protocol: Sustainable Stabilization of Slope Using Recycled Plastic Pin in Mississippi

The maritime and multimodal system is an integral part to the efficient movement of the nation’s freight, which includes around 25,000 miles of commercially navigable harbors, channels, and waterways, 4 million miles of public highways and roads, and over 140,000 miles of national, regional, and local railroad networks. Slopes and embankments are one of the major components of the maritime and multimodal transportation infrastructure, which often subjected to shallow landslides due to the existence of expansive clay soil. In Mississippi, the shallow slope failure is induced by the climatic (temperature and rainfall) variation that cause shrink-swell behavior of expansive Yazoo clay soil, and require significant budget to repair. As a cost effective alternative, Recycled Plastic Pins (RPP) can be utilized to stabilize shallow slope failures, to offer a sustainable option and increase the economic competitiveness to maintain multimodal transportation infrastructure. The current study intent to investigate the effectiveness of RPP to stabilize shallow slope failure on Yazoo clay in Mississippi, and develop a next generation design protocol based on the climatic variation of Mississippi, to maintain an efficient, resilient, and sustainable multimodal transportation system. Highly plastic Yazoo clay soil samples from will be collected and investigated in the laboratory to determine the physical and mechanical soil properties. The laboratory test result will be utilized to conduct safety analysis of unreinforced and RPP reinforced slope using Finite Element Method (FEM) in Plaxis, to evaluate the effectiveness of RPP in Mississippi. The historical rainfall data of coastal Mississippi from NOAA will be evaluated and the rainfall pattern will be determined. The rainfall data (with different intensity and duration) will be applied over the RPP reinforced slopes (with different spacing) in coupled flow mode, and associated deformation and safety analysis will be conducted to evaluate slope performance under different rainfall condition. Based on the extended FEM analysis results, the optimum spacing of RPP will be determined and a design protocol for Mississippi will be developed.


  • Status: Completed
  • Sponsor Organizations:

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Start Date: 20160501
  • Expected Completion Date: 20171031
  • Actual Completion Date: 20171030

Subject/Index Terms

Filing Info

  • Accession Number: 01601163
  • Record Type: Research project
  • Source Agency: Maritime Transportation Research and Education Center
  • Files: UTC, RiP
  • Created Date: May 27 2016 1:40PM