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Towards an Intrinsic Relationship between Diffusion Coefficients and Microscopic Features of Cements ?

Published online by Cambridge University Press:  21 March 2011

P. Lovera ,
C. Galle  and
P. Le Bescop
P. Lovera
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Saclay, DCC-DESD-SESD, BP 2, F-91191 Gif-sur-Yvette Cédex -France Email: patrick.lovera@cea.fr
C. Galle
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Saclay, DCC-DESD-SESD, BP 2, F-91191 Gif-sur-Yvette Cédex -France Email: christophe.galle@cea.fr
P. Le Bescop
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Saclay, DCC-DESD-SESD, BP 2, F-91191 Gif-sur-Yvette Cédex -France Email: patrick.lebescop@azurite.cea.fr
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Abstract

Long-term behavior of cemented waste packages requires the knowledge of water diffusion coefficients (water is supposed to be the main degradation agent, by solubilization of some chemical compounds). A simple modeling, based on the use of hydration code CEMHYD3D is proposed and validated for pure OPC pastes (sound or degraded) at mass ratio water / cement lying between 0.25 and 0.65. The nature of the porosity available for diffusion and the role of residual anhydrous compounds are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 663: Symposium – Scientific Basis for Nuclear Waste management XXIV , 2000 , 81
Copyright
Copyright © Materials Research Society 2001

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References

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