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Applications of the Carbon-14-Polymethylmethacrylate (PMMA) Impregnation Method in Studies on Porosity and Matrix Diffusion

Published online by Cambridge University Press:  25 February 2011

K-H. Hellmuth ,
M. Shtari-Kauppi  and
A. Lindberg
K-H. Hellmuth
Affiliation:
Finnish Centre for Radiation and Nuclear Safety, POB 268, SF-00101 Helsinki, Finland
M. Shtari-Kauppi
Affiliation:
Department of Radiochemistry, University of Helsinki, Unioninkatu 35, SF-00170 Helsinki, Finland
A. Lindberg
Affiliation:
Geological Survey of Finland, Betonimiehenkuja 4, SF-02150 Espoo, Finland
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Abstract

We are presenting applications of a new technique for the study of porosity and diffusivity in rocks employing impregnation with labeled polymethylmethacrylate. We studied samples of different rock types and rock that has undergone various types of alteration. We have focussed special attention on fissures and fissure fillings. Association of porosity with certain mineral phases has been addressed. The spatial distribution of rock porosity exhibits a great diversity. It is a rock-typical parameter. Altered rock is, usually, characterized by inhomogenities in porosity and anisotropy of migration pathways.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 257: Symposium – Scientific Basis for Nuclear Waste Management XV , 1991 , 649
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

[1] Neretnieks, I., J. Geophys. Res. 85, 4379 (1980).CrossRefGoogle Scholar
[2] Hellmuth, K-H., Siitari-Kauppi, M., Report STUK-B-VALO 63, Helsinki (1990).Google Scholar
[3] Hellmuth, K-H., Siitari-Kauppi, M., Lindberg, A., Study of Porosity and Migration Pathways in Crystalline Rock By Impregnation with Carbon-14-Polymethylmethacrylate, Intern. Conf. Migration 91, Jerez (1991), (to be publ.)Google Scholar
[4] Lindberg, A., Kurimo, M., Report TVO 89-67, Espoo (1989), (in Finnish).Google Scholar