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Evolution of an Engineered Barrier Under Thermal Gradient During the STRIPA Experiments: Influence of the Clay Texture on the Element Transfers

Published online by Cambridge University Press:  10 February 2011

C. Pozo ,
M. Jullien  and
C. Poinssot
C. Pozo
Affiliation:
Commissariat á l'Energie Atomique, DCC'DESD'SESD/LMGSBP6, 92265 Fontenay aux Roses Cedex
M. Jullien
Affiliation:
Commissariat á l'Energie Atomique, DCC'DESD'SESD/LMGSBP6, 92265 Fontenay aux Roses Cedex
C. Poinssot
Affiliation:
Commissariat á l'Energie Atomique, DCC'DESD'SESD/LMGSBP6, 92265 Fontenay aux Roses Cedex
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Abstract

Hydrothermal experiments on saturated barrier were conducted for 6 months and 4 years in the granite of the STRIPA mine (Sweden). The French clay Fo-Ca 7 (80 % Kaolinite/Smectite mixed-layer) was compacted (25 MPa) and placed around a steel heater in a 20 cm diameter borehole. The temperature was about 170°C at contact with the heater and only 80°C at clay/granite interface, thus giving a thermal gradient around 10°C/cm

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 951
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

1 Pusch, R., Karnland, O., Lajudie, A., et, J. Lechelle Bouchet, A.. Hydrothermal field test with french candidate clay embedding steel heater in the Stripa mine. SKB report 9302 (1992).Google Scholar