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    Volume 43, Issue 6 (November 2020)

    Special Issue Paper

    A New Inclined Pullout Device for Laboratory Tests on Geosynthetics

    (Received 9 April 2019; accepted 12 February 2020)

    Published Online: 01 November 2020

    CODEN: GTJODJ

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    Abstract

    Geosynthetics are widely used in landfill cover systems for various purposes. The stability of these geosynthetics on slopes of landfill covers depends on the effectiveness of the anchors in which these are embedded at the top of the slope. These geosynthetics are subjected to pullout forces that are in an inclined direction. However, only two studies have been reported so far on the inclined pullout behavior of geosynthetics embedded in various types of anchors. In this study, a new inclined pullout device is developed to conduct pullout tests under different angles of inclinations. The salient features and details of various components of this device are presented in this article. Because geogrids are the preferred choice for veneer reinforcement, inclined pullout tests are conducted on geogrids embedded in three different types of anchor, namely, run-out, I-type, and L-type anchors. The tests are conducted on two different types of sands, i.e., quarry sand and river sand. The results show that the peak pullout force increases significantly as the inclination of the pullout force increases for all three types of anchor and for both the sands. Moreover, the complete pullout force-displacement response is found to be different for the three anchors. Practical implications of the outcome of the study are given.

    Author Information:

    Bhowmik, Riya
    Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi

    Shahu, J. T.
    Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi

    Datta, Manoj
    Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi


    Stock #: GTJ20190115

    ISSN:0149-6115

    DOI: 10.1520/GTJ20190115

    Author
    Title A New Inclined Pullout Device for Laboratory Tests on Geosynthetics
    Symposium ,
    Committee D18