Microstructural investigation of calcium montmorillonite

Michal Matusewicz, K. Pirkkalainen, V. Liljeström, J.P. Suuronen, A. Root, A. Muurinen, R. Serimaa, Markus Olin

    Research output: Contribution to journalArticleScientificpeer-review

    11 Citations (Scopus)

    Abstract

    Bentonite clay is planned to form a part of deep-geological repositories of spent nuclear fuel in several countries. The extremely long operation time of the repository requires an in-depth understanding of the structure and properties of used materials. In this work the microstructure of a simplified system of Ca-montmorillonite is investigated using a set of complementary methods: X-ray diffraction, small angle X-ray scattering, nuclear magnetic resonance, transmission electron microscopy and ion exclusion. The paper presents experimental results obtained from compacted, water saturated samples in the dry density range 0.6–1.5 g/cm3. It can be observed that different methods yield similar quantification of water present in the interlamellar space. Combined results support the multiple porosity concept of the bentonite structure.
    Original languageEnglish
    Pages (from-to)267-276
    Number of pages9
    JournalClay Minerals
    Volume48
    Issue number2
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Bentonite
    bentonite
    montmorillonite
    repository
    calcium
    Calcium
    dry density
    Geological repositories
    nuclear magnetic resonance
    transmission electron microscopy
    microstructure
    Water
    Spent fuels
    porosity
    X-ray diffraction
    scattering
    Nuclear fuels
    X ray scattering
    clay
    water

    Keywords

    • betonite buffer
    • calcium
    • hlw repositories
    • microstructure
    • montmorillonite

    Cite this

    Matusewicz, M., Pirkkalainen, K., Liljeström, V., Suuronen, J. P., Root, A., Muurinen, A., ... Olin, M. (2013). Microstructural investigation of calcium montmorillonite. Clay Minerals, 48(2), 267-276. https://doi.org/10.1180/claymin.2013.048.2.08
    Matusewicz, Michal ; Pirkkalainen, K. ; Liljeström, V. ; Suuronen, J.P. ; Root, A. ; Muurinen, A. ; Serimaa, R. ; Olin, Markus. / Microstructural investigation of calcium montmorillonite. In: Clay Minerals. 2013 ; Vol. 48, No. 2. pp. 267-276.
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    abstract = "Bentonite clay is planned to form a part of deep-geological repositories of spent nuclear fuel in several countries. The extremely long operation time of the repository requires an in-depth understanding of the structure and properties of used materials. In this work the microstructure of a simplified system of Ca-montmorillonite is investigated using a set of complementary methods: X-ray diffraction, small angle X-ray scattering, nuclear magnetic resonance, transmission electron microscopy and ion exclusion. The paper presents experimental results obtained from compacted, water saturated samples in the dry density range 0.6–1.5 g/cm3. It can be observed that different methods yield similar quantification of water present in the interlamellar space. Combined results support the multiple porosity concept of the bentonite structure.",
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    author = "Michal Matusewicz and K. Pirkkalainen and V. Liljestr{\"o}m and J.P. Suuronen and A. Root and A. Muurinen and R. Serimaa and Markus Olin",
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    Matusewicz, M, Pirkkalainen, K, Liljeström, V, Suuronen, JP, Root, A, Muurinen, A, Serimaa, R & Olin, M 2013, 'Microstructural investigation of calcium montmorillonite', Clay Minerals, vol. 48, no. 2, pp. 267-276. https://doi.org/10.1180/claymin.2013.048.2.08

    Microstructural investigation of calcium montmorillonite. / Matusewicz, Michal; Pirkkalainen, K.; Liljeström, V.; Suuronen, J.P.; Root, A.; Muurinen, A.; Serimaa, R.; Olin, Markus.

    In: Clay Minerals, Vol. 48, No. 2, 2013, p. 267-276.

    Research output: Contribution to journalArticleScientificpeer-review

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    Matusewicz M, Pirkkalainen K, Liljeström V, Suuronen JP, Root A, Muurinen A et al. Microstructural investigation of calcium montmorillonite. Clay Minerals. 2013;48(2):267-276. https://doi.org/10.1180/claymin.2013.048.2.08