An experimental study on ionic migration through saturated kaolin

J. Blewett, W. J. McCarter, Malcolm Chrisp, G. Starrs

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    This paper details technical aspects associated with electrical conductivity measurements within saturated clays and presents experimental work to show the direct application of electrical techniques to track ionic movement through clay under chemically induced flow. The study confined itself to kaolin using both naturally sedimented samples and consolidated samples. Regarding the latter, a Rowe cell was adapted to allow electrical measurements to be taken both normal and parallel to the direction of loading. Bulk conductivity measurements and measurements on the conductivity of the interstitial pore fluid were used to quantify the pore tortuosity and effective diffusion coefficient of saturated clay. In addition, predicted concentration time curves agreed well with those estimated from conductivity measurements. © 2003 Elsevier B.V. All rights reserved.

    Original languageEnglish
    Pages (from-to)281-291
    Number of pages11
    JournalEngineering Geology
    Volume70
    Issue number3-4
    DOIs
    Publication statusPublished - Nov 2003

    Keywords

    • Consolidation
    • Diffusion
    • Electrical conductivity
    • Kaolin

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