CORALUS: an integrated in situ test on the corrosion of alpha-active (SON68) HLW glass

Elie Valcke, Steven Smets, Serge Labat, Karel Lemmens, Pierre Van Iseghem, Peter Thomas, Nicole Godon, Patrick Jollivet, Géraldine Parisot, Jean-Pierre Mestre, Norbert Jockwer, Klaus Wieczorek, Claudine Pozo

    Research outputpeer-review

    Abstract

    As part of the study of the performance of the French R7T7 HLW glass in underground disposal conditions, integrated in situ corrosion tests with alpha-doped SON68 glass samples were performed. Two test tubes have been dismantled, and the glass and clay samples have been analysed (mass loss, SEM, EDX, SIMS,…). The results on glass corrosion respond to the expectations and agree with results from laboratory tests and modelling predictions. The glass alteration is about two orders of magnitude higher at 90 °C than at 30 °C. The addition of powdered glass frit to a Ca-bentonite backfill reduces the glass alteration by two orders of magnitude in comparison with the more aggressive backfill, dried Boom Clay. The advantage and limitations of integrated in situ tests are discussed.
    Original languageEnglish
    Title of host publicationMRS Online Proceedings Library
    PublisherSpringer
    DOIs
    StatePublished - 1 Sep 2006
    Event2005 - MRS : 29th International Symposium on the Scientific Basis for Nuclear Waste Management - Gent
    Duration: 12 Sep 200516 Sep 2005

    Publication series

    NameMRS Online Proceedings Library
    PublisherSpringer
    Volume932
    ISSN (Electronic)1946-4274

    Conference

    Conference2005 - MRS
    Abbreviated titleMRS2005
    Country/TerritoryBelgium
    CityGent
    Period2005-09-122005-09-16

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