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Characterisation of the Barrier Performance of Cements

Published online by Cambridge University Press:  21 March 2011

F. P. Glasser
F. P. Glasser*
Affiliation:
Chemistry Department, Meston Buildings, University of Aberdeen, AB24 3UE
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Abstract

Portland and modified Portland cements are useful matrices for solidification and storage of wastes. Concrete containing cement is likely to be introduced into the repository. The further use of cement as an engineered barrier reduces materials incompatibility problems. Cement has a high internal pH and maintains a high buffering reserve of alkalinity. This in turn, reduces the solubility of many radionuclides. The source of the immobilisation (chemical, physical) is sensitive to nuclide species: sorption and precipitation are the main binding mechanisms. The conditioning action of cement could affect the performance of other engineered barriers. The deterioration of cements is discussed. Areas of research needs are highlighted.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 713: Symposium JJ – Scientific Basis for Nuclear Waste Management XXV , 2002 , JJ9.1
Copyright
Copyright © Materials Research Society 2002

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References

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