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dc.contributor.authorDing, Jihui
dc.contributor.authorChester, Frederick M.
dc.contributor.authorChester, Judith S.
dc.contributor.authorZhu, Cheng
dc.contributor.authorArson, Chloé
dc.date.accessioned2016-07-07T14:38:09Z
dc.date.available2016-07-07T14:38:09Z
dc.date.issued2016-06
dc.identifier.citationJ. Ding, F.M. Chester, J.S. Chester, C. Zhu, C. Arson. "Mechanical Behavior and Microstructure Development in Consolidation of Nominally Dry Granular Salt". ARMA 16-261, Proc. 50th US Rock Mechanics/Geomechanics Symposium.en_US
dc.identifier.urihttp://hdl.handle.net/1853/55352
dc.descriptionPresented at the 50th US Rock Mechanics/Geomechanics Symposium of the American Rock Mechanics Association (ARMA), Houston, TX, 26-29 June 2016.en_US
dc.descriptionCopyright © 2016 by the American Rock Mechanics Association
dc.description.abstractUniaxial consolidation of granular salt is carried out to study the mechanical behavior and fabric development in a material that deforms by microscopic brittle and intracrystalline-plastic processes. Dry granular salt is sieved to produce well-sorted size fractions. The granular salt is consolidated in a heated cell at axial stresses up to 90 MPa and temperatures of 100 - 200 ˚C to document stress-consolidation relationships and microstructural development. Polished and chemically-etched petrographic sections of salt samples prior to and after deformation at 150˚C are studied using transmitted- and reflected-light optical microscopy. We show that temperature has profound effect on porosity reduction during consolidation. At tested conditions, the dominant deformation mechanism is crystal plasticity; brittle deformation is largely suppressed. Samples consolidated at higher maximum axial stress develop higher overall dislocation densities. The distribution of dislocations, however, is strongly heterogeneous from grain to grain because of the complex grain-scale loading geometries and the distribution of intragranular flaws such as fluid inclusions. Static recrystallization occurs in some highly strained areas, but overall is minor at 150˚C. The experiments help to improve our understanding of consolidation, and serve to guide the fabrication of synthetic rock salt as experimental material, as well as to inform and test constitutive models of deformation of granular salt for engineering needs.en_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectMaterial deformationen_US
dc.subjectUniaxial consolidationen_US
dc.subjectMechanical behavioren_US
dc.subjectGranular salt deformationen_US
dc.titleMechanical Behavior and Microstructure Development in Consolidation of Nominally Dry Granular Salten_US
dc.typePost-printen_US
dc.typeProceedingsen_US
dc.contributor.corporatenameGeorgia Institute of Technology. School of Civil and Environmental Engineeringen_US
dc.contributor.corporatenameTexas A & M University. Department of Civil Engineeringen_US
dc.embargo.termsnullen_US


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