Chemically and electrically induced swelling in clays and shales

Simple item page
dc.contributor.advisorWong, Ronald C. K.
dc.contributor.authorDeriszadeh, Mohammad
dc.date.accessioned2017-12-18T22:32:22Z
dc.date.available2017-12-18T22:32:22Z
dc.date.issued2012
dc.descriptionBibliography: p. 250-259en
dc.descriptionA few pages are in colour.en
dc.description.abstractThe swelling behavior of shale formations is of importance from both operational management and geo-environmental perspectives. This research program was concentrated on the investigation of deformation of shales and clays in response to the variations of pore fluid chemistry. Development of a mathematical framework describing the swelling behavior of clay-based materials along with experimental study of swelling geomaterials enabled for simulating the swelling process. A new experimental setup featured with electrical elements was developed to accelerate the conventional swell test on argillaceous materials by applying the electrical potential gradient. Based on the results of swell tests on several clay and shale samples, the application of electrical potential gradient was identified as an effective method to accelerate the rate of ionic extraction and the swelling process. X-ray CT scanning technique was applied as a non-destructive method to qualitatively investigate the profile of swelling through the test materials under conventional and accelerated swell tests. In addition, the influence of specific surface area, cation exchange capacity, Atterberg limits, and grain size distribution was assessed on the amount of swelling. Applicability of coefficients of volume change obtained from consolidation-rebound tests was examined in simulating the swelling behavior. Coefficients of hydraulic and electro-osmotic permeability were identified as key material properties controlling the rate of swelling. Comparison between the numerical and experimental results showed that the hydraulic and electro-osmotic permeability could vary with the changes in the pore fluid concentration. Applying the numerical model along with the experimental results of swell tests resulted in the determination of hydraulic and electro-osmotic permeability as functions of pore fluid concentration. These material properties were determined for clay and shale samples investigated in this research program.
dc.format.extentxxvii, 316 leaves : ill. ; 30 cm.en
dc.identifier.citationDeriszadeh, M. (2012). Chemically and electrically induced swelling in clays and shales (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/4801en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/4801
dc.identifier.urihttp://hdl.handle.net/1880/105802
dc.language.isoeng
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
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.
dc.titleChemically and electrically induced swelling in clays and shales
dc.typedoctoral thesis
thesis.degree.disciplineCivil Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
ucalgary.thesis.accessionTheses Collection 58.002:Box 2084 627942956
ucalgary.thesis.notesUARCen
ucalgary.thesis.uarcreleaseyen
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
thesis_Deriszadeh_2012.pdf
Size:
127.11 MB
Format:
Adobe Portable Document Format
Description:
Thesis
Download
Collections
Legacy Theses