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HTO Diffusion in Oxfordian Limestone and Callovo-Oxfordian Argillite Formations

Published online by Cambridge University Press:  17 March 2011

M. Descostes ,
V. Blin ,
B. Grenut ,
P. Meier  and
E. Tevissen
M. Descostes
Affiliation:
Laboratoire de Mesure et Modélisation de la Migration des Radionucléides (L3MR) DEN/DPC/SECR, CEA, 91191 Gif sur Yvette, France, michael.descostes@cea.fr
V. Blin
Affiliation:
Laboratoire de Mesure et Modélisation de la Migration des Radionucléides (L3MR) DEN/DPC/SECR, CEA, 91191 Gif sur Yvette, France
B. Grenut
Affiliation:
Laboratoire de Mesure et Modélisation de la Migration des Radionucléides (L3MR) DEN/DPC/SECR, CEA, 91191 Gif sur Yvette, France
P. Meier
Affiliation:
Laboratoire de Mesure et Modélisation de la Migration des Radionucléides (L3MR) DEN/DPC/SECR, CEA, 91191 Gif sur Yvette, France
E. Tevissen
Affiliation:
Laboratoire de Mesure et Modélisation de la Migration des Radionucléides (L3MR) DEN/DPC/SECR, CEA, 91191 Gif sur Yvette, France
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Abstract

Diffusion coefficients and accessible porosities for HTO were measured on 30 samples from the Andra Underground Rock Laboratory in Meuse/Haute-Marne (France) using the through diffusion technique. Two distinct geological formations were studied: Oxfordian limestone and Callovo-oxfordian argillite between 166 and 477 m depth. The experiences were carried out with synthetic pore-water from each formation. The measured values of the effective diffusion coefficients (De) are ranging from 2.6× 10-12 to 12.4 × 10-11 m2 s-1 while accessible porosities (ε) are between 2.4 and 24%. Good correlations are found between these two parameters.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 824: Symposium CC – Scientific Basis for Nuclear Waste Management XXVIII , 2004 , CC8.29
Copyright
Copyright © Materials Research Society 2004

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References

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