Durability of Silicate Glasses: An Historical Approach
- USM 201 'Mineralogie-Petrologie', Museum National d'Histoire Naturelle, CNRS UMR 7160, Paris (France)
- Laboratoire des Geomateriaux, Universite de Marne la Vallee (France)
- Service de Recherches de Metallurgie Physique, Commissariat a l' Energie Atomique (CEA), Saclay (France)
- Laboratory of Waste Management, Paul Scherrer Institut (PSI), Villigen (Switzerland)
- Department of Geological and Environmental Sciences, Stanford University, Stanford, CA (United States)
We present a short review of current theories of glass weathering, including glass dissolution, and hydrolysis of nuclear waste glasses, and leaching of historical glasses from an XAFS perspective. The results of various laboratory leaching experiments at different timescales (30 days to 12 years) are compared with results for historical glasses that were weathered by atmospheric gases and soil waters over 500 to 3000 years. Good agreement is found between laboratory experiments and slowly leached historical glasses, with a strong enrichment of metals at the water/gel interface. Depending on the nature of the transition elements originally dissolved in the melt, increasing elemental distributions are expected to increase with time for a given glass durability context.
- OSTI ID:
- 21054652
- Journal Information:
- AIP Conference Proceedings, Vol. 882, Issue 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644427; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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