Small-Strain Shear Modulus and Strength Increase of Cement-Treated Clay

    Volume 33, Issue 1 (January 2010)

    ISSN: 0149-6115

    CODEN: GTJOAD

    Published Online: 24 November 2009

    Page Count: 10


    Flores, R. D. Verástegui
    Assistant Professor, Laboratory of Geotechnics, Ghent Univ., Zwijnaarde,

    Di Emidio, G.
    Ph.D Student/Academic Assistant, Laboratory of Geotechnics, Ghent Univ., Zwijnaarde,

    Van Impe, W. F.
    Full Professor, Laboratory of Geotechnics, Ghent Univ., Zwijnaarde,

    (Received 28 January 2009; accepted 1 October 2009)

    Abstract

    A simple nondestructive technique was used as an alternative method to monitor the hardening of cement-treated clay as a function of time. The principle of this monitoring technique is based on the use of bender elements to measure the small-strain shear modulus (G0) at various time intervals. The strength increase was monitored by conventional unconfined compression testing. Experimental work was carried out on Kaolin clay treated with Portland cement and blast furnace slag cement at different dosages. The results showed that G0, as well as strength, of cement-treated samples increases logarithmically with time. However, blast furnace slag cement produces a slower hardening rate early after mixing. It was found that for each binder type, the G0 increase and the strength increase, when normalized, follow a common trend. Such a hardening function may be used as the basis of a strength prediction rule. The functions obtained are in good agreement with data on other cement-treated inorganic clays published in the literature.


    Paper ID: GTJ102354

    DOI: 10.1520/GTJ102354

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    Author
    Title Small-Strain Shear Modulus and Strength Increase of Cement-Treated Clay
    Symposium , 0000-00-00
    Committee D18