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AuthorAlshibli, Khalid A.
AuthorJarrar, Maha F.
AuthorDruckrey, Andrew M.
AuthorAl-Raoush, Riyadh I.
Available date2021-02-08T09:14:53Z
Publication Date2017
Publication NameJournal of Geotechnical and Geoenvironmental Engineering
ResourceScopus
URIhttp://dx.doi.org/10.1061/(ASCE)GT.1943-5606.0001601
URIhttp://hdl.handle.net/10576/17606
AbstractThe constitutive behavior of sheared sand is highly influenced by particle morphology, gradation, mineralogy, specimen density, loading condition, stress path, and boundary conditions. The current literature lacks a three-dimensional (3D) systematic experimental study that investigates the influence of particle morphology, confining pressure, and specimen density on the failure mode of sheared sand. In this paper, surface texture, roundness, and sphericity of three uniform sands and glass beads with similar grain size were quantified by using 3D images of particles. In situ nondestructive 3D synchrotron microcomputed tomography (SMT) was used to monitor the deformation of medium-dense and very dense dry sand specimens that were tested under axisymmetric triaxial loading condition at 15 and 400 kPa confining pressures. The particles were identified and tracked in 3D as shearing progressed within the specimens, and maps of incremental particle translation and rotation were developed and used to uncover the relationship between particle morphology, specimen density, and confining pressure on the deformation and failure mode of sheared sand. This paper discusses the relationship between the failure mode and particle morphology, specimen density, and confining pressure.
Languageen
PublisherAmerican Society of Civil Engineers (ASCE)
SubjectComputed tomography
Failure mode
Shear bands
Strain localization
TitleInfluence of particle morphology on 3D kinematic behavior and strain localization of sheared sand
TypeArticle
Issue Number2
Volume Number143
dc.accessType Abstract Only


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