Arid
DOI10.2172/138367
报告编号ANL--91/36
来源IDOSTI_ID: 138367
Parametric effects on glass reaction in the unsaturated test method
Woodland, A.B.; Bates, J.K.; Gerding, T.J.
英文摘要The Unsaturated Test Method has been applied to study glass reaction under conditions that may be present at the potential Yucca Mountain site, currently under evaluation for storage of reprocessed high-level nuclear waste. The results from five separate sets of parametric experiments are presented wherein test parameters ranging from water contact volume to sensitization of metal in contact with the glass were examined. The most significant effect was observed when the volume of water, as controlled by the water inject volume and interval period, was such to allow exfoliation of reacted glass to occur. The extent of reaction was also influenced to a lesser extent by the degree of sensitization of the 304L stainless steel. For each experiment, the release of cations from the glass and alteration of the glass were examined. The major alteration product is a smectite clay that forms both from precipitation from solution and from in-situ alteration of the glass itself. It is this clay that undergoes exfoliation as water drips from the glass. A comparison is made between the results of the parametric experiments with those of static leach tests. In the static tests the rates of release become progressively reduced through 39 weeks while, in contrast, they remain relatively constant in the parametric experiments for at least 300 weeks. This differing behavior may be attributable to the dripping water environment where fresh water is periodically added and where evaporation can occur.
出版年1991
报告类型Technical Report
语种英语
国家美国
来源学科分类05 NUCLEAR FUELS ; HIGH-LEVEL RADIOACTIVE WASTES ; UNDERGROUND DISPOSAL ; GLASS ; CHEMICAL REACTIONS ; GROUND WATER ; SMECTITE ; SYNTHESIS ; PARAMETRIC ANALYSIS ; Yucca Mountain Project
URLhttp://www.osti.gov/scitech/servlets/purl/138367
资源类型科技报告
条目标识符http://119.78.100.177/qdio/handle/2XILL650/264620
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GB/T 7714
Woodland, A.B.,Bates, J.K.,Gerding, T.J.. Parametric effects on glass reaction in the unsaturated test method,1991.
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