Volume 6, Issue 4 (April 2009)

    Long-Term Properties of Airfoam-Treated Lightweight Soil Made from Dredged Clay

    (Received 24 September 2008; accepted 17 February 2009)

    Published Online: 2009

    CODEN: JAIOAD

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    Abstract

    Airfoam-treated soil is lightweight and provides for the early age development of shear strength and effective utilization of dredged soils. This paper summarizes a 10-year follow-up study of the lightweight soils that were placed as backfill at the seawall in Kobe Port Island and Tokyo International Airport. These two sites are the early case examples of construction undertaken in 1996 including the recovery project after the Kobe earthquake disaster and the offshore expansion project of the Tokyo International Airport. Sampling and laboratory testing were carried out in order to investigate the physical and mechanical properties to compare the initial material condition. The depth profiles of the soil parameters such as bulk density, water content, pH, Ca content, shear strength, and needle penetration resistance were examined. Consequently, it was confirmed that the physical and mechanical properties of the airfoam-treated lightweight soil satisfied their required performances, indicating that the lightweight soil has sufficient durability for use as geomaterial for construction in coastal areas.


    Author Information:

    Watabe, Yoichi
    Port and Airport Research Institute, Yokosuka, Japan

    Tanaka, Masanori
    Port and Airport Research Institute, Yokosuka, Japan

    Saegusa, Hiroyuki
    Research and Development Center, Toa Corporation, Yokohama, Japan

    Shinsha, Hiroshi
    Penta-Ocean Construction Co., Ltd., Tokyo, Japan

    Tsuchida, Takashi
    Hiroshima University, Higashi Hiroshima, Japan


    Stock #: JAI102134

    ISSN: 1546-962X

    DOI: 10.1520/JAI102134

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    Author
    Title Long-Term Properties of Airfoam-Treated Lightweight Soil Made from Dredged Clay
    Symposium Fourth Symposium on Contaminated Sediments: Sustainable Management and Remediation, 2009-07-03
    Committee D18