| DOI: | 10.2172/1049356
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| 报告号: | LA-UR-12-24272
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| 报告题名: | Status of LANL investigations of temperature constraints on clay in repository environments |
| 作者: | Caporuscio, Florie A [Los Alamos National Laboratory]; Cheshire, Michael C [Los Alamos National Laboratory]; Newell, Dennis L [Los Alamos National Laboratory]; McCarney, Mary Kate [Los Alamos National Laboratory]
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| 出版年: | 2012
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| 发表日期: | 2012-08-22
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| 国家: | 美国
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| 语种: | 英语
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| 中文主题词: | 降水
; 高温
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| 主题词: | PRECIPITATION
; HEAT
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| 英文摘要: | The Used Fuel Disposition (UFD) Campaign is presently evaluating various generic options for disposal of used fuel. The focus of this experimental work is to characterize and bound Engineered Barrier Systems (EBS) conditions in high heat load repositories. The UFD now has the ability to evaluate multiple EBS materials, waste containers, and rock types at higher heat loads and pressures (including deep boreholes). The geologic conditions now available to the U.S.A. and the international community for repositories include saturated and reduced water conditions, along with higher pressure and temperature (P, T) regimes. Chemical and structural changes to the clays, in either backfill/buffer or clay-rich host rock, may have significant effects on repository evolution. Reduction of smectite expansion capacity and rehydration potential due to heating could affect the isolation provided by EBS. Processes such as cementation by silica precipitation and authigenic illite could change the hydraulic and mechanical properties of clay-rich materials. Experimental studies of these repository conditions at high P,T have not been performed in the U.S. for decades and little has been done by the international community at high P,T. The experiments to be performed by LANL will focus on the importance of repository chemical and mineralogical conditions at elevated P,T conditions. This will provide input to the assessment of scientific basis for elevating the temperature limits in clay barriers. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1049356
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/40820
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1049356.pdf（750KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Caporuscio, Florie A [Los Alamos National Laboratory],Cheshire, Michael C [Los Alamos National Laboratory],Newell, Dennis L [Los Alamos National Laboratory],et al. Status of LANL investigations of temperature constraints on clay in repository environments. 2012-01-01.
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