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Article
Open AccessModeling glass corrosion with GRAAL
Computational codes are necessary tools for geochemical modeling of the alteration of minerals due to their ability to handle key mechanisms, such as dissolution, precipitation, diffusion, and convection at ma...
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Article
Open AccessApplication of GRAAL model to the resumption of International Simple Glass alteration
The methodology developed for predicting nuclear waste behavior under disposal conditions combines experimental approaches and modeling. A waste glass canister placed in contact with water undergoes irreversib...
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Article
Open AccessChemical durability of peraluminous glasses for nuclear waste conditioning
For the handling of high level nuclear waste (HLW), new glass formulations with a high waste capacity and an enhanced thermal stability, chemical durability, and processability are under consideration. This st...
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Article
Open AccessStructure of International Simple Glass and properties of passivating layer formed in circumneutral pH conditions
Knowing the structure of a material is necessary to understand its evolution under various influences; here, the alteration by water of a reference glass of nuclear interest, called International Simple Glass ...
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Article
Open AccessContribution of zeolite-seeded experiments to the understanding of resumption of glass alteration
Understanding the origin and the consequences of glass alteration regimes is necessary for the prediction of nuclear glass durability. The so-called “stage 3” or “resumption of alteration regime” of glasses us...
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Article
Open AccessOrigin and consequences of silicate glass passivation by surface layers
Silicate glasses are durable materials, but are they sufficiently durable to confine highly radioactive wastes for hundreds of thousands years? Addressing this question requires a thorough understanding of the...
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Article
Glass-Iron-Clay interactions in a radioactive waste geological disposal: a multiscale approach
In France, nuclear glass canisters arising from spent fuel reprocessing are expected to be disposed in a deep geological repository using a multi-barrier concept (glass/canister/steel overpack and claystone). ...
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Article
Compositional Effects on the Long-Term Durability of Nuclear Waste Glasses: A Statistical Approach
As a result of the development of a reference glass formulation for the immobilization of West-Valley nuclear waste, a large number of glass compositions have been tested under a variety of leaching conditions...
