Testing the alteration of waste glasses under geological storage conditions
This project was based on integral experiments designed to simulate a geological storage environment. These included five experiments with environmental materials simulating a granite repository: - two tests with non-radioactive SON 68 18 17 glass (a monolithic block and a fractured block simulating an industrial waste glass), and - three tests on alpha-doped glass specimens (237Np, 239Pu and 241Am). Four additional experiments with non-radioactive or 239Pu-doped glass were conducted with moist clay as a simulated backfill material. Fracturation of the glass block did not increase aqueous corrosion significantly, although all the fracture surfaces were accessible to water. Corrosion behaviour was not significantly different for inactive or radioactive specimens under these conditions. This investigation also reveals the strong influence of clays on glass alteration. The test clay not only enhanced glass corrosion proportionally to the ratio between the clay mass and the glass surface area, but also diminished the actinide retention factor in the alteration film that developed at the glass surface.
Bibliographic Reference: EUR 13606 EN (1991) 152 pp., FS, ECU 12.50
ISBN: ISBN 92-826-3198-2
Record Number: 199210005 / Last updated on: 1994-12-02
Original language: en
Available languages: en