Hostname: page-component-77c89778f8-swr86 Total loading time: 0 Render date: 2024-07-20T07:09:12.808Z Has data issue: false hasContentIssue false
  • English
  • Français

Hydraulic and Diffusive Properties of Clay-Based Backfill Material for a Low-and Intermediate-Level Waste Repository

Published online by Cambridge University Press:  15 February 2011

W.J. Cho ,
J.O. Lee ,
P.S. Hahn  and
H.H. Park
W.J. Cho
Affiliation:
Nuclear Environment Management Center Korea Atomic Energy Research Institute, P.O. Box 105, Yoo-Sung, Taejon 305–606, Korea
J.O. Lee
Affiliation:
Nuclear Environment Management Center Korea Atomic Energy Research Institute, P.O. Box 105, Yoo-Sung, Taejon 305–606, Korea
P.S. Hahn
Affiliation:
Nuclear Environment Management Center Korea Atomic Energy Research Institute, P.O. Box 105, Yoo-Sung, Taejon 305–606, Korea
H.H. Park
Affiliation:
Nuclear Environment Management Center Korea Atomic Energy Research Institute, P.O. Box 105, Yoo-Sung, Taejon 305–606, Korea
Get access

Abstract

The results of experimental studies performed to determine the radionuclide diffusion coefficients in a compacted clay and the hydraulic conductivities of clay/crushed granite mixtures with various clay contents are presented. Clay used in the experiments is a natural clay from the southeastern part of Korea, and it contains mainly calcium bentonite. The hydraulic conductivities of clay/crushed granite mixtures decreased with increasing clay content. In case of clay content of 50 wt.%, they maintain the considerably lower values even at the dry density of 1.5 Mg/m3. The diffusion coefficients for 90Sr, 137Cs, 60Co and 125I in water saturated clay at a dry density of 1.4 Mg/m3 were measured at room temperature. The average apparent diffusion coefficients obtained are 4.5 × 10−12 m2/s, 9.0 ×10−13 m2/s, 3.4 × 10−13 m2/s and 6.7 × 10−11 m2/s for 90Sr, 137Cs, 60Co, and 125I, respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 299
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Park, H.S. et al., Korea Atomic Energy Research Institute Report, KAERI-NEMAC/PR-32193 (1994).Google Scholar
2. Smith, M. J. et al., RHO-BWI-ST-7, Rockwell Hanford Operations (1980).Google Scholar
3. Hahn, P.S. et al., Korea Atomic Energy Research Institute Report, KAERI-NEMAC/RR-63192 (1993).Google Scholar
4. Moon, H.S., You, J.H., Kim, J.H. and Cho, H.I., J. of the Korean Institute of Mining Geology, Vol. 20, p. 159 (1987).Google Scholar
5. Yong, R.N., Boonsinsuk, P. and Wong, G., Canadian Geotech. J., Vol. 23, p. 216 (1986).Google Scholar
6. Talbot, A.N. and Richart, F.E., University of Illinois Bulletin, No.137, Urban, IL (1923).Google Scholar
7. Cho, W.J., Oscarson, D.W. and Hahn, P.S., Applied Clay Science, Vol. 8, p. 283 (1993).Google Scholar
8. Westsik, J.H. Jr., Hodges, F.N., Kuhn, W.L. and Myers, T.R., Nucl. and Chem. Waste Management, Vol. 4, p. 291 (1983).Google Scholar
9. Gillham, R.W. and Cherry, J.A., Geological Society of America, Special Paper 189, p. 31 (1982).Google Scholar
10. Gray, M.N., Cheung, S.C.H. and Dixon, D.A., in Scientific Basis for Nuclear Waste Management, Material Research Society, Boston, MA, p. 523 (1984).Google Scholar
11. Pusch, R., SKBF/KBS, Swedish Nuclear Fuel Supply Company Technical Report 83–46 (1983).Google Scholar
12. Oscarson, D.W., Hume, H.B., Sawatsky, N.G. and Cheung, S.C.H., Soil Sci. Soc. of America J., Vol. 56, p. 1400 (1992).Google Scholar
13. Muurinen, A., Penttila-Hiltunen, P. and Uusheimo, K., in Scientific Basis for Nuclear Waste Management XII, Material Research Society, Pittsburgh, PA, p. 743 (1989).Google Scholar
14. Sato, H., Ashida, T., Kohara, Y., Yui, M., and Sasaki, N., J. of Nucl. Sci. and Technol. Vol. 29, p. 873 (1992).Google Scholar
15. Cho, W.J., Oscarson, D.W., Gray, M.N. and Cheung, S.C.H., Radiochimica Acta, Vol. 60, p. 159 (1993).Google Scholar
16. Miyahara, K., Ashida, T., Yusa, Y. and Sasaki, N., Radiochimica Acta, Vol. 52/53, p. 293 (1991).Google Scholar
17. Muurinen, A., Rantanen, J. and Penttila-Hiltunen, P., in Scientific Basis for Nuclear Waste Management IX, Material Research Society, Stockholm, Sweden, p. 617 (1986).Google Scholar
18. Berry, J.A. and Bond, K.A., DOE Report No. DOE/HMIP/PR/ 90/076 (1990).Google Scholar