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    Volume 41, Issue 1 (January 2018)

    Permeability Test Device for Soil with Automatic Water Head Control

    (Received 13 February 2017; accepted 17 July 2017)

    Published Online: 2017

    CODEN: GTJODJ

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    Abstract

    This paper proposes a constant water head permeability test device for soil with automatic water head control using sensors, actuators, and a microcontroller. A microcontroller controls a solenoid valve based on signals from a water level sensor to sustain a constant water level. The microcontroller also uses a digital scale, a temperature sensor, and a digital time clock to measure the amount of water, water temperature, and time lapse, respectively, during a permeability test. In the permeability tests for Jumunjin sand and Gwanak weathered soil that were performed in this study, the test device sustained a constant water level, minimizing the wastage of water. The permeability coefficients determined using the developed device were practically identical to the permeability coefficients obtained from the conventional method and had good agreement with the predicted values from previous studies. This study is also expected to well showcase the improvement and automation of the conventional geotechnical experiments using the microcontroller.

    Author Information:

    Woo, Sang Inn
    Department of Civil and Environmental Engineering, Seoul National University, Gwanak-gu, Seoul

    Kim, Joonyoung
    Institute of Engineering Research, Seoul National University, Gwanak-gu, Seoul

    Chung, Choong-Ki
    Department of Civil and Environmental Engineering, Seoul National University, Gwanak-gu, Seoul


    Stock #: GTJ20170047

    ISSN:0149-6115

    DOI: 10.1520/GTJ20170047

    Author
    Title Permeability Test Device for Soil with Automatic Water Head Control
    Symposium ,
    Committee D18