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Evaluation of the Retention Capability of Backfill Materials in the Presence of Cement Waste Form

Published online by Cambridge University Press:  01 January 1992

N.K. Ghattas ,
K.A.El Adham ,
S.B. Eskander  and
N.S. Mahmoud
N.K. Ghattas
Affiliation:
Atomic Energy Authority, Egypt
K.A.El Adham
Affiliation:
Atomic Energy Authority, Egypt
S.B. Eskander
Affiliation:
Atomic Energy Authority, Egypt
N.S. Mahmoud
Affiliation:
Atomic Energy Authority, Egypt
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Abstract

The present study focused on the retention capability of the different local backfill materials and on horizontal and vertical radionuclide migration in simulated repository conditions of a saturated static humid environment, using single or combined components of the near-field. The results obtained from semi-field experiment show that no migration of cesium radionuclide was detected outside the backfill zone within the time interval of the experiment. This reflects the possible efficiency, of the backfill materials used, for the confinement of radioactivity to the disposal site. On the other hand laboratory experiments show the effect of simulated repository condition on the sorption and desorption properties of backfill materials. It is clear from the results obtained that the presence of cement waste forms in equilibrium with underground water affect the retention capability of the backfill materials. The motivation of the work was a desire to provide a basis for minimizing radioactive waste processing by improving nonradioactive engineering barriers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 294: Symposium V – Scientific Basis for Nuclear Waste Management XVI , 1992 , 459
Copyright
Copyright © Materials Research Society 1993

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References

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