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Investigation of particle breakage under one-dimensional compression of sand using X-ray microtomography
Author(s)
Date Issued
2020-05-05
Date Available
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.
Other Sponsorship
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
Language
English
Status of Item
Peer reviewed
ISSN
0008-3674
This item is made available under a Creative Commons License
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