This is a small sample of Hostun sand with D50 about 300 microns. This 3D image has been obtained with x-ray tomography (voxel size 15 microns). Credits: Jacques Desrues, Cino Viggiani, Edward Andò and Stephen Hall. (2013) Granular Trip: Flying through the pore space of a sand specimen. Further reading Andò, E., S.A. Hall, G.Continue reading “Granular Trip: Flying through the pore space of a sand specimen”
Category Archives: CT Imaging
Triaxial shearing of sands using X-ray CT imaging and FEM
Triaxial shearing of an assembly of sand grains is numerically simulated using X-ray CT imaging and FEM concurrently. The actual morphology of particles, geometric contacts, and arrangement of solid, void phases are captured using X-ray CT imaging. A novel framework is introduced wherein a realistic assembly of sand grains is discretized using shell-based finite elementsContinue reading “Triaxial shearing of sands using X-ray CT imaging and FEM”
Single particle breakage under uniaxial compression test
Single Leighton Buzzard sand particles were compressed uniaxially and two primary breakage modes were proposed: splitting and explosive. In the splitting mode, the particle breaks into two or three large pieces without the creation of numerous small fragments. In terms of force-displacement curve, it tends to be almost linear while the crack initiates and propagatesContinue reading “Single particle breakage under uniaxial compression test”
Brittle fracture of a lightweight aggregate particle
Brittle fracture of a lightweight aggregate particle Credits: Velis et al. (2014) Environmental science & technology 48 (13), 7527-7535
Constriction between contacting sand particles
Constriction between contacting sand particles. Credits: Taylor et al., (2014) Computers and Geotechnics 69, 279-290
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Measuring damage in cemented granular materials.
Measuring damage in cemented granular materials
Measuring damage in cemented granular materials.
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