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Cs Speciation in Cements

Published online by Cambridge University Press:  21 March 2011

J. V. Hanna ,
L. P. Aldridge  and
E. R. Vance
J. V. Hanna
Affiliation:
Materials Division, Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia
L. P. Aldridge
Affiliation:
Materials Division, Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia
E. R. Vance
Affiliation:
Materials Division, Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia
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Abstract

Solid-state 133Cs magic angle spinning nuclear magnetic resonance (MAS NMR) measurements have been used to investigate Cs speciation in cements designed for immobilizing low-level nuclear wastes. Cs in ordinary Portland cement cured for only 10 days at room temperature appears to only inhabit aqueous solutions, as evidenced by a sharp signal with no sidebands, whether or not substantial quantities of blast furnace slag or silica fume are present. No significant 133Cs spectral differences were observed when slag or silica fume were present for curing periods of 10 days, but differences due to Cs partly inhabiting crystalline sites instead of water solutions were observed after 12 months in the slag-containing cement. Pre- incorporation of Cs in various zeolites, followed by mixing the zeolites into the cement, leads to enhanced Cs retention in the cement when it is subject to water leaching at 25°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 663: Symposium – Scientific Basis for Nuclear Waste management XXIV , 2000 , 89
Copyright
Copyright © Materials Research Society 2001

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References

REFERENCES

1. Atabek, R., Bouniol, P., Oliver, J., Gegout, P. and Jorda, M., in Mater. Res. Soc. Symp. Proc. 176, eds. Oversby, V. M. and Brown, P. W., 3 (1990).Google Scholar
2. Matsuzuru, H., Moriyama, N., Wadachi, Y. and Ito, A., Health-Physics-USA, 32, 529 (1977).Google Scholar
3. Atkinson, A., Nelson, K., and Valentine, T. M., Nucl. Chem. Waste Mgmt., 6, 241 (1986).Google Scholar
4. Tyson, A., Spectrum '90: American Nuclear Society (ANS) international meeting on radioactive waste technologies, decontamination, and hazardous wastes, American Nuclear Society, 322 (1990).Google Scholar
5. Angus, M. J., McCulloch, C. E., Crawford, R. W., Glasser, F. P. and Rahman, A. A., in Advances in Ceramics, Nuclear Waste Management, Volume 8, eds. Wicks, G. G. and Ross, W. A., American Ceramic Society, 429 (1984).Google Scholar
6. Aldridge, L. P., Day, R. A., Leung, S., Ray, A. S., Stevens, M.G., Knight, R. S. and Mapson, C. F., in Mechanisms of Chemical Degradation of Cement-Based Systems, eds. Scrivener, K. L. and Young, J. F., E&FN Spon, London, 358 (1997).Google Scholar
7. Plodinec, M. J., Evaluation of 137Cs sorbents for fixation in Concrete, Report DP-1444, E.I. Du Pont de Nemours and Company, Savannah River Laboratory (1977).Google Scholar
8. Atkinson, A. and Nickerson, A. K., Nucl. Tech., 81, 100 (1988)Google Scholar
9. Barnes, M. W., Scheetz, B. E. and Roy, D. M., in Advances in Ceramics, Nuclear Waste Management II, Volume 20, eds. Clark, D. E., White, W. B. and Machiels, A. J., American Ceramic Society, 313 (1986).Google Scholar
10. McCulloch, C. E., Rahman, A. A., Angus, M. J., Glasser, F. P. and Crawford, R. W., in Advances in Ceramics, Nuclear Waste Management, Volume 8, eds. Wicks, G. G. and Ross, W. A., American Ceramic Society, 413 (1984).Google Scholar
11. Kumar, A. and Roy, D. M., J. Am. Ceram. Soc., 69, 356 (1986).Google Scholar
12. Atkinson, A.. and Nickerson, A. K., J. Mat. Sci. 19, 3068 (1984).Google Scholar
13. Standard Test Method for Determining the Chemical Durability of Nuclear Waste Glasses: The Product Consistency Test (PCT), ASTM Test C1285-94, pp. 797–812 in 1995 Annual Book of ASTM Standards, Vol 12.01, Philadelphia, PA, USA, 1995.Google Scholar
14. Power, W. P., Wasylishen, R. E., Mooibroek, S., Pettitt, B. A. and Danchura, W., J. Phys. Chem., 94, 591 (1990).Google Scholar