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The Long-Term Corrosion and Modelling of Two Simulated Belgian Reference High-Level Waste Glasses

  • P. Van Iseghem (a1) and B. Grambow (a2)

Abstract

The corrosion behaviour in distilled water of two simulated candidate high level waste borosilicate glasses (SAN602519L3C2 and SM58LW11) his been investigated at 90°C for different SA/V condition's 10, 100, 7800 m−1). The experimental data were modelled using the PHREEQE and GLASSOL computer codes. The model is quite successful for describing the corrosion behaviour, using experimentally derived values for the forward rate, silica saturation and the final rate. GWss SAN60 is more stable than glass SM58 at SA/V values of 10 and 100 m−1, but in the long term the relative performance is inverse. Indeed, the high Al content of SAN60 induces the creation of analcime crystals after SiO2 has reached its saturation concentration in solution, which cause an enhancement of the final rate of dissolution of the glass; for SM58 on the contrary the SiO2 solution is a stable condition.

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[ 1] Van Iseghem, P., Timmermans, W., De Batist, R.; in Scientific Basis for Nuclear Waste Management VIII, edited by C.M., Jantzen, J.A., Stone and R.C., Ewing (Mater. Res. Soc. Proc. 44, Pittsburgh, PA 1985), pp. 5562
[ 2] Testing and Evaluation of Solidified High Level Radioactive Waste, edited by A.R., Hall (Graham & Trotman Publ. 1987), EUR 10852
[ 3] DOE/TIC 11400- Nuclear Waste Materials Handbook - Test Methods, PNL-Richland (Washington) (1981)
[ 4] Grambow, B., Hermansson, H.P., Björner, I.K., Werme, L.; in Scientific Basis for Nuclear Waste Management IX, edited by L., Werme (Mater. Res. Soc. Proc. 50, Pittsburgh, PA 1986) pp. 187194
[ 5] Grambow, B., Zwicky, H.U., Bart, G., Björner, I.K., Werme, L.O.; in Scientific Basis for Nuclear Waste Management X, edited by J.K., Bates and W.B., Seefeldt (Mater. Res. Soc. Proc. 84, Pittsburgh Pa, 1987), pp. 471482
[ 6] JSS Report 87–01, SKB, Stockholm, in press (1987)
[ 7] Grambow, B., JSS-project report 87–02 (1987)
[ 8] Grambow, B., in Scientific Basis for Nuclear Waste Management VIII, edited by C.M., Jantzen, J.A., Stone and R.C., Ewing (Mater. Res. Soc. Proc. 44, Pittsburg, PA 1985), pp. 1524
[ 9] Iler, R.K., J. Colloid Interface Sci. 13, 399 (1973)
[ 10] Grambow, B., Strachan, D., PNL-report, to be published 1988
[ 10] Haaker, R., Malow, G., Offermann, P., in Scientific Basis for Nuclear Waste Management VIII, edited by C.M., Jantzen, J.A., Stone and R.C., Ewing (Mater. Res. Soc. Proc. 44, Pittsburgh, PA 1985), pp. 121128
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  • ISSN: -
  • EISSN: 1946-4274
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