Swelling of compacted expansive clays interpreted in terms of Tezaghi effective stress

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10294839" target="_blank" >RIV/00216208:11310/14:10294839 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Swelling of compacted expansive clays interpreted in terms of Tezaghi effective stress
Original language description
Experimental data on nine different sodium and calcium bentonites from literature are examined. Specific experiment types are selected so that we evaluate the behaviour of microstructural units (aggregates) rather than the global behaviour of compacted bentonite, which is influenced by its double structure. We show that it is possible to uniquely represent the unconfined water retention curve, swelling pressure tests, swelling under constant load tests and mechanical unloading tests in the space of drydensity of clay aggregate vs. mean Terzaghi effective stress. Our analysis implies that the Terzaghi effective stress is applicable for description of the expansive clay aggregate behaviour and it is reasonable to consider the behaviour of aggregates tobe reversible. In addition, for a broad range of suctions, they can be considered as fully saturated.
Czech name
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Czech description
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Project
<a href="/en/project/GA14-32105S" target="_blank" >GA14-32105S: Small strain stiffness of unsaturated soil - laboratory data and constitutive model</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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