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Stability and Buffering Capacity of the Geosphere for Long-term Isolation of Radioactive Waste

Application to Argillaceous Media - "Clay Club" Workshop Proceedings - Braunschweig, Germany, 9-11 December 2003

image of Stability and Buffering Capacity of the Geosphere for Long-term Isolation of Radioactive Waste

Most experts worldwide agree that radioactive waste disposal in engineered facilities, or repositories, located in appropriate formations deep underground, provide a suitable waste management option for protecting humans and the environment now and in the future.  These conference proceedings establish the scientific basis for stability and buffering capacity of deep geological waste management systems. The proceedings synthesise the main outcomes of the workshop and present a compilation of the related abstracts.

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Reaction of Argillaceous Media vis-à-vis Natural Perturbations and Geosphere Evolutions Buffering

Nuclear Energy Agency

The capacity of fractures in argillaceous rocks to self-heal (or become, with the passage of time, less conductive to groundwater) is often cited as a primary factor favouring the choice of such materials as host rocks for deep disposal. The underlying processes which contribute to self-healing can be broadly subdivided into: (a) mechanical and hydromechanical processes linked to the change in the stress field, movement of porewater, swelling, softening, plastic deformation and creep, and (b) geochemical processes linked to chemical alterations, transport in aqueous solution...

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