Triaxial- and uniaxial-compression testing methods developed for extraction of pore water from unsaturated tuff, Yucca Mountain, Nevada
- Colorado School of Mines, Golden, CO (USA). Dept. of Geology and Geological Engineering
- Geological Survey, Denver, CO (USA). Water Resources Div.
To support the study of hydrologic system in the unsaturated zone at Yucca Mountain, Nevada, two extraction methods were examined to obtain representative, uncontaminated pore-water samples from unsaturated tuff. Results indicate that triaxial compression, which uses a standard cell, can remove pore water from nonwelded tuff that has an initial moisture content greater than 11% by weight; uniaxial compression, which uses a specifically fabricated cell, can extract pore water from nonwelded tuff that has an initial moisture content greater than 8% and from welded tuff that has an initial moisture content greater than 6.5%. For the ambient moisture conditions of Yucca Mountain tuffs, uniaxial compression is the most efficient method of pore-water extraction. 12 refs., 7 figs., 2 tabs.
- Research Organization:
- American Nuclear Society (ANS), La Grange Park, IL (United States); Colorado School of Mines, Golden, CO (United States). Dept. of Geology and Geological Engineering; Geological Survey, Denver, CO (United States). Water Resources Div.
- DOE Contract Number:
- AI08-78ET44802
- OSTI ID:
- 137938
- Report Number(s):
- CONF-890928-28; ON: DE91002374
- Resource Relation:
- Conference: Nuclear waste isolation in the unsaturated zone: FOCUS `89, Las Vegas, NV (United States), 18-21 Sep 1989; Other Information: PBD: [1989]
- Country of Publication:
- United States
- Language:
- English
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