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Modeling a Cement Degradation Experiment by a Hydraulic Transport and Chemical Equilibrium Coupled Code

Published online by Cambridge University Press:  10 February 2011

W. Pfingsten  and
M. Shiotsuki
W. Pfingsten
Affiliation:
Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland, [email protected]
M. Shiotsuki
Affiliation:
PNC, Akasaka Minato-ku, Tokyo, Japan, [email protected]
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Abstract

An experiment degrading a porous cement disc by pure water was modelled by a reactive transport model including chemical reactions, mineral precipitation/dissolution reactions and changing hydraulic properties of the cement. For the early cement degradation or high pH phase, an equilibrium sorption approach is used for the release of alkali metals. Porosity changes of the porous cement disc during degradation induce conductivity changes that are taken into account in the modelling by coupling back transport to geochemical parameters.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 805
Copyright
Copyright © Materials Research Society 1998

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References

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