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Preliminary Investigations of Creep Strain of Neogene Clay from Warsaw in Drained Triaxial Tests Assisted by Computed Microtomography

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cris.lastimport.scopus2024-02-12T20:20:25Z
dc.abstract.en<p>The study concerns soil creep deformation in multistage triaxial stress tests under drained conditions. High resolution X-ray computed microtomography (XμCT) was involved in structure recognition before and after triaxial tests. Undisturbed Neogene clay samples, which are widespread in central Poland, were used in this study. XμCT was used to identify representative sample series and informed the detection and rejection of unreliable ones. Maximum deviatoric stress for in situ stress confining condition was equal 95.1 kPa. This result helped in the design of further multistage investigations. The study identified the rheological strain course, which can be broken down into three characterizations: decreasing creep strain rate, transitional constant creep velocity, and accelerating creep deformation. The study found that due to multistage creep loading, the samples were strengthened. Furthermore, there is a visibly "brittle" character of failure, which may be the consequence of the microstructure transformation as a function of time as well as collapse of voids. Due to the glacial tectonic history of the analyzed samples, the reactivation of microcracks might also serve as an explanation. The number of the various sizes of shear planes after failure is confirmed by XμCT overexposure.</p>
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKaczmarek, Łukasz Dominik
dc.contributor.authorDobak, Paweł
dc.contributor.authorKiełbasiński, Kamil
dc.date.accessioned2024-01-25T17:33:40Z
dc.date.available2024-01-25T17:33:40Z
dc.date.issued2017
dc.description.financeNie dotyczy
dc.description.volume39
dc.identifier.doi10.1515/SGEM-2017-0014
dc.identifier.issn0137-6365
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/116950
dc.identifier.weblinkhttp://150.254.65.57/info/article/UAM4018ba1bef7e471888fd9c9032bf4ffe/
dc.languageeng
dc.pbn.affiliationearth and related environmental sciences
dc.relation.ispartofStudia Geotechnica et Mechanica
dc.relation.pages35-49
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titlePreliminary Investigations of Creep Strain of Neogene Clay from Warsaw in Drained Triaxial Tests Assisted by Computed Microtomography
dc.typeJournalArticle
dspace.entity.typePublication