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    Field Measurements of Frost Penetration into a Landfill Cover that uses a Paper Sludge Barrier

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    Frost penetration is a major environmental concern in landfill design. Freezing and thawing cycles may deteriorate the permeability of the liner or cap. In this study, the depth of frost penetration into a landfill cover that uses paper sludge as the impermeable barrier (the Hubbardston landfill in Massachusetts) was measured using a frost measurement system. A thermistor probe measured the temperature at various depths. Although temperature measurements are important, soil resistivity measurements are required to accurately predict the freezing level, since soil resistivity increases greatly upon freezing. A conductivity probe measured the half bridge voltage between conductivity rings and a ground rod. Data were collected in data loggers.

    The data collected from 1992–1996 showed that the frost level did not penetrate the paper sludge capping layer. Heavy snow cover throughout the winters decreased the depth of frost penetration by insulating the landfill. The high water content in the sludge also contributed to the lack of freezing.


    instrumentation, freezing, thawing, permeability

    Author Information:

    Moo-Young, HK
    Assistant Professor, Lehigh University, Bethlehem, PA

    LaPlante, C
    Assistant Professor, Union College, Schenectady, NY

    Zimmie, TF
    Professor, Rensselaer Polytechnic Institute, Troy, NY

    Quiroz, J
    Graduate Research Assistant, Rensselaer Polytechnic Institute, Troy, NY

    Committee/Subcommittee: D18.23

    DOI: 10.1520/STP14222S