Anisotropic thermal conductivity of natural Boom Clay

Linh-Quyen Dao, Pierre Delage, Anh-Minh Tang, Yu-Jun Cui, Jean-Michel Pereira, Xiang Ling Li, Xavier Sillen, Guangjing Chen

    Research outputpeer-review


    The thermal conductivity of host rocks is an important parameter in the design of deep geological disposal of heat-emitting radioactivewaste. Due to bedding, heat transfer in sedimentary rocks is affectedbytheir transversally isotropic structure. In this work, an experimental program is run to measure the thermal conductivities of Boom Clay along various orientations with respect to the bedding plane by using the needle thermal probe technique. Measurements were performed on specimens obtained from cores drilled fromthe HADES Underground Research Laboratory (URL) at Mol, Belgium, at a depth of 223 m. The thermal conductivity values obtained are in good agreement with those previously published, confirming the thermal anisotropy of Boom Clay. Moreover, the observed changes in thermal conductivity with respect to the distance to the gallery provide further evidence on the extent of the Excavation Damaged Zone around the gallery.
    Original languageEnglish
    Pages (from-to)282-287
    JournalApplied Clay Science
    Issue number11
    StatePublished - Nov 2014

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