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Investigation of Rock Samples UsingX-Ray-Microcomputer-Tomography Before and After Mercury IntrusionPorosimetry

Published online by Cambridge University Press:  03 September 2012

P. Klobes ,
H. Riesemeier ,
K. Meyer ,
J. Goebbels ,
M. Siitari-Kauppi  and
K-H. Hellmuth
P. Klobes
Affiliation:
Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, D-12200 Berlin, Germany
H. Riesemeier
Affiliation:
Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, D-12200 Berlin, Germany
K. Meyer
Affiliation:
Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, D-12200 Berlin, Germany
J. Goebbels
Affiliation:
Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, D-12200 Berlin, Germany
M. Siitari-Kauppi
Affiliation:
Laboratory of Radiochemistry, University of Helsinki, PO Box 55, FIN-00014 University of Helsinki, Finland
K-H. Hellmuth
Affiliation:
Finnish Centre for Radiation and Nuclear Safety, PO Box 14, FIN-00881 Helsinki, Finland
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Abstract

A new method for the physical characterization of rock matrices for use insite investigations of nuclear waste repositories has been developed. Themethod can provide information needed in the assessment of the performanceof the geosphere working as a natural barrier retarding the migration ofradionuclides by diffusion into the rock matrix. Most conventional methodsfor the physical characterization of rocks give only bulk information. Thecombination of mercury po-rosimetry and computer tomography can give 3-Ddata on mineral-specific porosity distributions with additional pore sizeinformation. Additionally, limits for mineral-specific internal surfaceareas can be estimated, which is essential for the assessment of water-rockinteraction and reactive interaction with radionuclides (sorption). Resultsof measurements on granitic rock (granodiorite) from the Baltic shield arediscussed and integrated with results by complementary methods.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 465: Symposium II – Scienfific Basis for Nuclear Waste Management XX , 1996 , 863
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

[1] Hellmuth, K-H., Klobes, P., Meyer, K., Röhl-Kuhn, B., Siitari-Kauppi, M., Hartikainen, J., Hartikainen, K., Timonen, J., Z. Geol. Wiss. 23 (5/6), p. 691–706 (1995).Google Scholar
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