Reactive plasticity for clays during dehydration and rehydration. Part 1: concepts and options |
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Affiliation: | 1. University of California San Francisco, San Francisco, CA, United States of America;2. Washington University School of Medicine, St Louis, MO, United States of America;3. Saint Louis University, St Louis, MO, United States of America |
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Abstract: | A mixture theory framework is adapted to analyze the effects of changes in clay chemistry during dehydration and rehydration on clay mechanical properties. Macroscopic and microscopic evidence points to a possibility of modeling the mineralogical processes of illitization of smectites and re-smectitization of illite as kinetic reactions in closed systems. A version of thermo-chemo-plasticity for rehydrating illite is presented in which a hidden variable of hardening depends on temperature and the reaction progress variable in addition to plastic strain. |
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