STP1562

    Interface Transmissivity Measurement in Multicomponent Geosynthetic Clay Liners

    Published: Jul 2013


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    Abstract

    Three different multicomponent geosynthetic clay liners (GCLs) from different manufacturers are tested in a transmissivity cell with a new testing procedure to quantify the flow rate and the interface transmissivity between the coating or attached film presenting a hole and the upper geotextile of the GCL. The testing device was previously used in studies aiming to evaluate the interface transmissivity between a damaged geomembrane (GM) and a regular GCL. Different results are obtained regarding the evolution with the time of the flow rate ranging from 1.73 × 10−11 m3/s to 2.18 × 10−10 m3/s at steady state, which is on average in the range of flow rate results obtained with a GM–GCL composite liner. Additional tests performed by adding a GM on top give lower values of flow rates. This shows the importance of the film or coating rigidity for decreasing flow rate and insuring a better quality contact at the interface.

    Keywords:

    geosynthetics, environmental applications, landfill liner, transmissivity, multicomponent geosynthetic clay liners (GCLs), testing, advective flow


    Author Information:

    Bannour, H.
    Irstea, HBAN Unit, Antony,

    Touze-Foltz, N.
    Irstea, HBAN Unit, Antony,

    Courté, A.
    Irstea, HBAN Unit, Antony,

    von Maubeuge, K. P.
    NAUE GmbH and Co., KG, Espelkamp-Fiestel


    Paper ID: STP156220120089

    Committee/Subcommittee: D35.04

    DOI: 10.1520/STP156220120089


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