| EPSRC Reference: |
GR/H61407/01 |
| Title: |
A COMPARITIVE STUDY OF DISSOLUTION PROCESSES IN NATURAL AND HYDROTHERMALLY CORRODED GLASSES |
| Principal Investigator: |
Cox, Dr G |
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| Department: |
Physics |
| Organisation: |
University of York |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
10 December 1992 |
Ends: |
09 December 1994 |
Value (£): |
97,959
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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The objective of the proposed research is to obtain clearer understanding of the long term dissolution of glass in a natural environment. Short term (accelerated) leaching tests on durable glasses, eg nuclear waste glasses, at temperatures > 100 C produce surface corrosion bursts typically a few micrometres thick. Only limited information can be obtained from such experiments about the long-term dissolution processes which operate when glass decays naturally in the presence of groundwater. We propose a series of experiments to investigate the accelerated corrosion of poorly durable potash glasses. Samples will be cut from pristine sections of naturally corroded specimens of archaeological origin - whose weathering crusts will previously have been characterised - and exposed to continuous flow and static leaching conditions. Various leachants will be used (including groundwater) at selected temperatures and flow rates. Extraction rates will be monitored by analysing the leachants during the course of the experiments. The data will be used to establish glass dissolution mechanisms. Tests will be applied to determine the validity, and limitations, of extrapolating short-term (weeks) data to predict the long-term (centuries) behaviour of glass when it decays at lower temperatures in a natural environment.
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Key Findings |
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.york.ac.uk |