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dc.contributor.authorDing, Jihui
dc.contributor.authorChester, Frederick M.
dc.contributor.authorChester, Judith S.
dc.contributor.authorXianda, Shen
dc.contributor.authorArson, Chloé
dc.date.accessioned2017-05-18T12:59:02Z
dc.date.available2017-05-18T12:59:02Z
dc.date.issued2017-06
dc.identifier.citationJ. Ding, F. M. Chester, J. Chester, X. Shen, & C. Arson (2017). Microcrack Network Development in Salt Rock During Cyclic Loading at Low Confining Pressure. 51st US Rock Mechanics/Geomechanics Symposium of the American Rock Mechanics Association, San Francisco, CA, June 25-28 2017, Paper 17-0308.en_US
dc.identifier.urihttp://hdl.handle.net/1853/58106
dc.descriptionCopyright © 2017 by the American Rock Mechanics Association.en_US
dc.descriptionARMA 17-0308en_US
dc.description.abstractTriaxial compression tests of synthetic salt-rock are conducted to investigate microfracture development in a semibrittle polycrystalline aggregate. The salt-rock is produced from uniaxial consolidation of granular halite at 150 °C. Following consolidation, the sample is deformed by cyclic loading at room temperature and low confining pressure (Pc = 1 MPa). Load cycles are performed within the elastic regime, up to yielding, and after successive increments of steady ductile flow. At the tested conditions, the samples exhibit ductile behavior with slight work hardening. The microstructure at different stages of deformation indicates that grain-boundary cracking is the dominant brittle deformation mechanism. Microcracking is influenced by the loading configuration and the geometric relationships between neighboring grains. These microcracks display a preferred orientation parallel to the load axis. With cyclic loading, microcracks increase in density and form linked arrays parallel to the direction of loading. As the linked arrays lengthen, grain contacts are progressively opened, which eventually leads to loss of cohesion along surfaces parallel to the loading direction. The observations of crack-network development in salt-rock can improve our understanding of progressive damage and spalling at salt cavern walls.en_US
dc.language.isoen_USen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectCompressionen_US
dc.subjectCrack-network developmenten_US
dc.subjectCyclic loadingen_US
dc.subjectDeformationen_US
dc.subjectGrainen_US
dc.subjectGrain boundary crackingen_US
dc.subjectLow confining pressureen_US
dc.subjectSalt rocken_US
dc.subjectUniaxial consolidationen_US
dc.titleMicrocrack Network Development in Salt-Rock During Cyclic Loading at Low Confining Pressureen_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. Center for Tectonophysicsen_US
dc.contributor.corporatenameTexas A & M University. Department of Geology and Geophysicsen_US


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