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Model Calculations of Porosity Reduction Resulting From Cement-Tuff Diffusive Interaction

Published online by Cambridge University Press:  10 February 2011

Peter C. Lichtner ,
Roberto T. Pabalan  and
Carl I. Steefel
Peter C. Lichtner
Affiliation:
Center for Nuclear Waste Regulatory Analyses, San Antonio, TX 78238-5166U.S.A.
Roberto T. Pabalan
Affiliation:
Center for Nuclear Waste Regulatory Analyses, San Antonio, TX 78238-5166U.S.A.
Carl I. Steefel
Affiliation:
Department of Geology, University of South Florida, Tampa, FL 33620U.S.A.
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Abstract

To determine the potential effects of alkaline plume migration on the near-field environment of the proposed high-level radioactive waste geologic repository at Yucca Mountain, Nevada, calculations are conducted simulating interactions between cement and tuff with pure diffusive transport of solute species. The calculations used the reactive transport submodule GEM of the computer code MULTIFLO [6]. The results suggest that strong alteration of the tuff host rock and of cement in contact with the tuff could result from these interactions. Porosity reduction within the tuff could isolate the matrix from fracture pore water. The model calculations predict calcification of the cement as would be expected. In simulations involving counter-diffusive transport across the cement-tuff contact, calcification is more pronounced in a partially-saturated environment compared to a fully-saturated one.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 709
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

1 Bish, D.L., Carey, J.W., Carlos, B.A., Chipera, S.J., Guthrie, G.D. Jr., Levy, S.S., Vaniman, D.T., and WoldeGabriel, G., LA-EES-1-TIP-96-009. Los Alamos, NM: Los Alamos National Laboratory (1996).Google Scholar
2 Lichtner, P.C. and Eikenberg, J., PSI-Report 95-01. Wurenlingen, Switzerland: Paul Scherrer Institute (1995)Google Scholar
3 Herold, K.J. and Nolting, R.M. III, BABEAFOOO-01717-0200-00002, Rev.01, Civilian Radioactive Waste Management System/Management and Operating (1997)Google Scholar
4 Atkins, M., Bennett, D., Dawes, A., Glasser, F., Kindness, A., and Read, D.. DoE/HMIP/RR/92/005. Aberdeen, Scotland: Aberdeen University (1992)Google Scholar
5 Steefel, C.I. and Lichtner, P.C.. J. Hydrol. (submitted for publication).Google Scholar
6 Lichtner, P.C. and Seth, M.S., MULTIFLO User's Manual. Version 1.1: Two-phase Nonisothermal Coupled Hydrologic-Thermal-Chemical Flow Simulator. San Antonio, TX: Center for Nuclear Waste Regulatory Analyses (1997)Google Scholar
7 Atkins, M., Glasser, F.P., Moroni, L.P., and Jack, J.J.. DoE/HMIP/RR/94.011. Aberdeen, Scotland: Aberdeen University (1994)Google Scholar
8 Glasser, F.P. (personal communication).Google Scholar
9 Wolery, T.J., UCRL-MA-110662. Livermore, CA: Lawrence Livermore National Laboratory (1992)Google Scholar
10 Steefel, C.I. and Lichtner, P.C., Geochim. Cosmochim. Acta 58, 3595 (1994).Google Scholar
11 Hanar, J.E., Carley, J.F., Isherwood, W.F., and Raber, E., UCID-21867. Livermore, CA: Lawrence Livermore National Laboratory (1990)Google Scholar
12 Thorstenson, D.C., Weeks, E.P., Haas, H., and Woodward, J.C., in Proceedings of the Nuclear Waste Isolation in the Unsaturated Zone Focus '89. La Grange Park, IL. American Nuclear Society (1990)Google Scholar
13 Yang, C., Turner, A.K., Sayre, T.M., and Montazer, P., USGS Report 88-4189. Denver, CO: U.S. Geological Survey (1988)Google Scholar
14 Lichtner, P.C., Geochim. Cosmochim. Acta 52, 43 (1988).Google Scholar
15 Lichtner, P.C., Rev. Mineral. 34, 1 (1996).Google Scholar
16 Lichtner, P.C., Amer. J. Sci. 293, 257 (1993).Google Scholar