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

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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.

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References

  1. I. Neretnieks, J. Geophys. Res. 85, 4379 (1980).

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  2. K-H. Hellmuth, M. Siitari-Kauppi, Report STUK-B-VALO 63, Helsinki (1990).

  3. K-H. Hellmuth, M. Siitari-Kauppi, A. Lindberg, Study of Porosity and Migration Pathways in Crystalline Rock By Impregnation with Carbon-14-Polymethylmethacrylate, Intern. Conf. Migration 91, Jerez (1991), (to be publ.)

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  4. A. Lindberg, M. Kurimo, Report TVO 89-67, Espoo (1989), (in Finnish).

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Acknowledgement

We wish to thank the Nagra, Baden (CH) for rock samples from Siblingen. The work was supported in part by the Ministry of Trade and Industry of Finland. The language has been revised by M.E. Lukko.

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Authors and Affiliations

  1. Finnish Centre for Radiation and Nuclear Safety, POB 268, SF-00101, Helsinki, Finland

    K-H. Hellmuth

  2. Department of Radiochemistry, University of Helsinki, Unioninkatu 35, SF-00170, Helsinki, Finland

    M. Shtari-Kauppi

  3. Geological Survey of Finland, Betonimiehenkuja 4, SF-02150, Espoo, Finland

    A. Lindberg

Authors
  1. K-H. Hellmuth
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  2. M. Shtari-Kauppi
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  3. A. Lindberg
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Hellmuth, KH., Shtari-Kauppi, M. & Lindberg, A. Applications of the Carbon-14-Polymethylmethacrylate (PMMA) Impregnation Method in Studies on Porosity and Matrix Diffusion. MRS Online Proceedings Library 257, 649–656 (1991). https://doi.org/10.1557/PROC-257-649

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  • DOI: https://doi.org/10.1557/PROC-257-649

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