GEOTECHNICAL ASPECTS

 

Objectives: 

  • i)                    Define realistic outcomes of strength testing of municipal refuse

  • ii)                   Define true risk associated with diffusion across landfill liners and chart future research needs

    •

    Schedule:

    0:00 - 0:05  Introduction

    0:05 - 0:20  Presentation 1 and questions

    0:20 - 0:35  Presentation 2 and questions

    0:35 - 1:00  Focused discussion

    1:00 - 1:15  Presentation 3 and questions

    1:15 - 1:30  Presentation 4 and questions

    1:30 - 1:55  Focused discussion

    1:55 - 2:00  Wrap-up

    Discussion:

    The discussion time will center on a series of questions.  Some of the discussion time will be spent in small groups generating ideas and reporting back to the overall group; other  time will be for open discussion before the whole audience.  The chair will lead the discussion time and keep it on track.  The discussion will be steered into the examination of the following questions:

    Issue 1: Shear strength of refuse:

  • Can conventional geotechnical testing techniques be applied to the determination of the shear strength of refuse?

  • What is the minimum size specimen that needs to be tested to achieve representative results?

  • How many replicate tests are required to adequately account for the inherent variability of refuse?

    •

     

    Issue 2: Diffusion across barriers:

    ·        What is the magnitude of the problem of diffusion of contaminants across landfill liners, ie does it pose a major risk?

    ·        If the answer to the above question is YES, what are the most problematic contaminants and what are the most appropriate tests for quantifying the risks posed?

    ·        Are there cost-effective techniques for ameliorating these risks?

    Although all of the above questions may not be examined, the chair will use them to focus discussion.  They will also be used during pre-conference e-mail communications with the platform presenters to help them refine and orient their presentations appropriately.

    Presentations:

    Gabr, M

    Shear strength parameters of Municipal Solid Waste with Leachate Recirculation
    Affiliation: Department of Civil Engineering, North Carolina State University, Raleigh, NC, USA

    Siegel, Timothy
    Geotechnical characterization of ash for static and seismic design of landfills
    Affiliation:  S&ME Inc, 840 Low Country Blvd, Mt Pleasant, SC, USA

    Bartelt-Hunt, Shannon
    Evaluation of Sorptive Amendments for use in Waste Disposal Liners
    Affiliation:  Department of Civil Engineering, University of Virginia, Charlotsville, VA, USA

    Tuncer Edil
    Quantification of diffusion across synthetic membranes

     Chair

    Andy Fourie, School of Civil and Environmental Engineering, University of the Witwatersrand, Johannesburg, South Africa. andyf@civil.wits.ac.za

    Go to
    Main Page  |  Session List  |  Call for Papers