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    Volume 40, Issue 1 (January 2017)

    Electro-Osmotic Chemical Treatment for Marine Clayey Soils: A Laboratory Experiment and A Field Study

    (Received 27 September 2015; accepted 2 September 2016)

    Published Online: 09 January 2017

    CODEN: GTJODJ

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    Abstract

    An electro-osmotic chemical treatment (ECT) method for marine clayey soils was investigated in this study using self-designed laboratory equipment. According to related studies, electrolytes are an important factor for improving the bearing capacity of marine clayey soils. This study focused on improving the mechanical properties of marine clayey soils by using ECT and analyzed the effects of using a salt electrolyte solution on soil strength. The design of the ECT procedure was also investigated in this study. In addition, this study considered various practical issues, including the current, voltage, and bearing capacity of soils before and after testing. The laboratory testing results demonstrated that the ECT technique is an effective method for improving marine clayey soils and that the concentration of the salt solution obviously influences improvements of soil strength. Furthermore, based on laboratory results, a field study was performed in the Dong-gang Business District, Dalian City. The results from the field study were compared with those from the laboratory, and the feasibility of using ECT for marine clayey soils was further analyzed. An empirical formula for the strengthened zone was also developed for strengthening marine clayey soils to meet construction requirements. This study provides some references and suggestions for the practical application of the ECT technique for marine clayey soils.


    Author Information:

    Zhang, L.
    Institute of Engineering Mechanics, China Earthquake Administration, Sanhe City, Hebei Province,

    Wang, N. W.
    Institute of Engineering Mechanics, China Earthquake Administration, Sanhe City, Hebei Province,

    School of Civil Engineering, Shenyang Jiangzhu University, Shenyang,

    Jing, L. P.
    Institute of Engineering Mechanics, China Earthquake Administration, Sanhe City, Hebei Province,

    Fang, C.
    Department of Civil Engineering, University of Nebraska-Lincoln, Lincoln, NE

    Shan, Z. D.
    Institute of Engineering Mechanics, China Earthquake Administration, Harbin, Heilongjiang,

    Li, Y. Q.
    Institute of Engineering Mechanics, China Earthquake Administration, Harbin, Heilongjiang,


    Stock #: GTJ20150229

    ISSN:0149-6115

    DOI: 10.1520/GTJ20150229

    Author
    Title Electro-Osmotic Chemical Treatment for Marine Clayey Soils: A Laboratory Experiment and A Field Study
    Symposium ,
    Committee D18