Investigation of particle breakage under one-dimensional compression of sand using X-ray microtomography

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Title: Investigation of particle breakage under one-dimensional compression of sand using X-ray microtomography
Authors: Zhao, BudiWang, JianfengAndò, Edwardet al.
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Date: 5-May-2020
Online since: 2021-11-08T14:39:40Z
Abstract: Particle breakage alters particle-scale properties of granular soils including particle size, shape, and contact conditions, and changes macroscale properties including soil compressibility, shear strength, and permeability. This study monitors the crushing of natural quartz sands under one-dimensional compression with in situ X-ray tomography, i.e., X-ray scans during loading. We use the assembly-scale and particle-scale images to characterize particle failure patterns, e.g., chipping, major splitting, and comminution. Image processing and analysis enable us to determine the failure patterns around the yield stress, and the influence of initial density and particle morphology on the particle survival probability. We further quantify the degree of particle breakage with fractal dimension, breakage factor, and specific surface. Particle shape and coordination number both show a scale-dependent evolution pattern.
Funding Details: Research Grant Council of the Hong Kong SAR
National Science Foundation of China
Type of material: Journal Article
Publisher: Canadian Science Publishing
Journal: Canadian Geothechnical Journal
Volume: 57
Issue: 5
Start page: 754
End page: 762
Copyright (published version): 2020 the Authors
Keywords: FractalsLaboratory testsParticle crushing-crushabilityParticle-scale behaviourSandsEvolutionDeformationBehaviorShearingFracture
DOI: 10.1139/cgj-2018-0548
Language: en
Status of Item: Peer reviewed
ISSN: 0008-3674
This item is made available under a Creative Commons License:
Appears in Collections:Civil Engineering Research Collection

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