Altération pluriséculaire des systèmes verre/fer en milieu anoxique : apport des analogues archéologiques à la compréhension des mécanismes

TL;DRAbstract

The knowledge of glass alteration mechanisms arouses a great interest over the last decades, particularly in the nuclear field, since vitrification is used to stabilize high-level radioactive wastes in many countries. In the French concept, these nuclear glasses would be stored in geological repositories. This multibarrier system (glass matrix, stainless steel container, low-carbon steel overcontainer, geological barrier) must ensure the durable confinement of radionuclides. But laboratory experiments do not permit to predict directly the behaviour of these materials over typically a million-year timescale and the extrapolation of short-term laboratory data to long time periods remains problematic. Part of the validation of the predictive models relies on natural and archaeological analogues. Here, the analogues considered are vitreous slags produced as wastes by a blast furnace working during the 16th century in the ironmaking site of Glinet (Normandy, France). The choice of these spe

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