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The Effects of Calcite Solid Solution Formation on the Transient Release of Radionuclides from Concrete Barriers

Published online by Cambridge University Press:  28 February 2011

Robert W. Smith  and
John C. Walton
Robert W. Smith
Affiliation:
Idaho National Engineering Laboratory, P.O. Box 1625, Idaho Falls, ID 83415
John C. Walton
Affiliation:
Idaho National Engineering Laboratory, P.O. Box 1625, Idaho Falls, ID 83415
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Abstract

The wealhering of concrete by carbonation causes the formation of calcite solid solutions that can significantly improve concrete as a barrier to the migration of divalent radionuclide cations. Example calculations for 90Sr and 60Co indicate that release rates from carbonated concrete are five orders of magnitude lower than for intact, unweathered concrete and that the thin carbonated zone is a significant sink for these radionuclides.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 212: Symposium P – Scientific Basis for Nuclear Waste Management XIV , 1990 , 403
Copyright
Copyright © Materials Research Society 1991

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References

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