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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
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Saclay, DCC-DESD-SESD, BP 2, F-91191 Gif-sur-Yvette Cédex -France Email: [email protected]
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: [email protected]
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: [email protected]
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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
Copyright
Copyright © Materials Research Society 2001

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References

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