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    Volume 43, Issue 2

    Special Issue Paper

    Compressibility and Durability Characteristics of Lime Treated Expansive Semiarid Soils

    (Received 18 February 2014; accepted 22 October 2014)

    Published Online: 14 March 2015

    CODEN: JTEVAB

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    Abstract

    The current study evaluates the role of lime and the curing period on the compressibility and durability characteristics of two expansive semiarid soils samples originating from Saudi Arabia. The compressibility behavior of these soil samples was evaluated using a range of loading periods of time. Starting with a minimum practicable loading period of 0.5 h, the loading periods were progressively increased to 1, 2, 4, 8, and 24 h. It has been observed that the addition of lime significantly reduces the compressibility behavior of both the selected soils. The study shows that, for a given consolidation pressure increment, an increase in the duration of loading time produces a moderate increase in the final equilibrium void ratio values. In order to evaluate the durability characteristics, lime leachability tests (amount of lime that is converted into soluble form by dissociation into calcium and hydroxyl ions) were conducted on compacted specimens at varying lime contents on samples cured for 1, 7, 14, and 28 days. Analysis of the soil samples subject to increasing periods of curing time show a considerable decrease in the concentration of calcium. This is due to the transformation of amorphous lime into a stable crystalline form, which leads to the formation of pozzolanic compounds.


    Author Information:

    Moghal, Arif Ali Baig
    Assistant Professor, Department of Civil Engineering, College of Engineering, King Saud Univ., Riyadh,

    Kareem Obaid, Ali Abdul
    Master Student, Department of Civil Engineering, College of Engineering, King Saud Univ., Riyadh,

    Al-Refeai, Talal O.
    Professor, Department of Civil Engineering, College of Engineering, King Saud Univ., Riyadh,

    Al-Shamrani, Mosleh Ali
    Professor, Department of Civil Engineering, College of Engineering, King Saud Univ., Riyadh,


    Stock #: JTE20140060

    ISSN:0090-3973

    DOI: 10.1520/JTE20140060

    Author
    Title Compressibility and Durability Characteristics of Lime Treated Expansive Semiarid Soils
    Symposium ,
    Committee E60