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Hydration and Crystallization Pressure of Sodium Sulfate: a Critical Review

Published online by Cambridge University Press:  21 March 2011

Robert J. Flatt  and
George W. Scherer
Robert J. Flatt
Affiliation:
Princeton University, Dept. Civil and Environmental Engineering, Princeton, NJ, USA
George W. Scherer
Affiliation:
Princeton University, Dept. Civil and Environmental Engineering, Princeton, NJ, USA
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Abstract

The two most frequently mentioned mechanisms used to explain the severe damage that occurs when a porous material, containing the anhydride phase of sodium sulfate, is exposed to either water or rising humidity are critically reviewed. Both derivations are presented along with their underlying hypotheses. Critical differences are discussed and it is concluded that crystallization pressure is the relevant mechanism. In effect however, it is shown that the expressions obtained both for crystallization pressure and hydration pressure are quite similar.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 712: Symposium II – Materials Issues in Art and Archaeology VI , 2002 , II2.2
Copyright
Copyright © Materials Research Society 2002

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References

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