Hydro-Mechanical Coupling and Failure Behavior of Argillaceous Sedimentary Rocks: A Multi-Scale Approach

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dc.contributor.advisorWan, Richard G.
dc.contributor.authorEghbalian, Mahdad
dc.contributor.committeememberWong, Ron Chik-Kwong
dc.contributor.committeememberEpstein, Marcelo
dc.contributor.committeememberPriest, Jeffrey Alan
dc.contributor.committeememberRegueiro, Richard A.
dc.contributor.committeememberShrive, Nigel Graham
dc.date2019-06
dc.date.accessioned2019-05-02T22:30:39Z
dc.date.available2019-05-02T22:30:39Z
dc.date.issued2019-04-26
dc.description.abstractThis thesis aims at characterizing the hydro-mechanical behavior of argillaceous sedimentary rocks within a novel poro-elasto-plasticity framework that encompasses micro-mechanics and a multi-scale approach. The developed model considers argillaceous sedimentary rocks to be comprised of a mixture of clay aggregates and rock-type inclusions. The clay fraction has a dual porosity arising from micropores at the clay aggregate level and nanopores between the clay platelets that form the clay aggregates. The rock-type inclusions also have a dual porosity due to the presence of microcracks embedded into a nano-porous rock matrix. As such, the work develops multi-scale modeling techniques that elucidate the complex macroscopic characteristics observed in clay-rich rocks by advocating only the primitive physical laws at their fundamental scales. The outcome is an analytical constitutive law that transcends the various scales: from nano- to macro-scale. Therefore, the swelling stress originating in the nano-pores of clay particles and capillary stresses in the porous network, as well as micro-crack growth can be readily computed as a function of microstructure and physics across the various scales. The developed model is implemented within numerical modeling frameworks such as Finite Element Method (FEM) and eXtended FEM. Lab experimentally observed phenomena in argillaceous sedimentary rocks such as plastic/swelling deformations of clay aggregates and the failure of rock inclusions through micro-crack growth are successfully replicated.en_US
dc.identifier.citationEghbalian, M. (2019). Hydro-mechanical coupling and failure behavior of argillaceous sedimentary rocks: A multi-scale approach (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/36447
dc.identifier.urihttp://hdl.handle.net/1880/110264
dc.language.isoengen_US
dc.publisher.facultySchulich School of Engineeringen_US
dc.publisher.institutionUniversity of Calgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.en_US
dc.subjectMicromechanicsen_US
dc.subjectClay-rocken_US
dc.subjectFailureen_US
dc.subjectHomogenizationen_US
dc.subjectMultiscaleen_US
dc.subjectPartial saturationen_US
dc.subjectSwellingen_US
dc.subjectFractureen_US
dc.subjectExtended Finite Element Methoden_US
dc.subjectMicrocracken_US
dc.subject.classificationApplied Sciencesen_US
dc.subject.classificationApplied Mechanicsen_US
dc.subject.classificationEngineering--Civilen_US
dc.subject.classificationEngineering--Mechanicalen_US
dc.titleHydro-Mechanical Coupling and Failure Behavior of Argillaceous Sedimentary Rocks: A Multi-Scale Approachen_US
dc.typedoctoral thesisen_US
thesis.degree.disciplineEngineering – Civilen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameDoctor of Philosophy (PhD)en_US
ucalgary.item.requestcopytrue
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