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Influence of Load Mode on Particle Crushing Characteristics of Silica Sand at High Stresses
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- Y. Wu
- Associate Professor, School of Civil Engineering, Guangzhou Univ., Guangzhou 510006, China (corresponding author). ORCID: .
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- H. Yamamoto
- Professor, Graduate of International Development and Cooperation, Hiroshima Univ., Higashi-Hiroshima 7398511, Japan.
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- J. Cui
- Professor, School of Civil Engineering, Guangzhou Univ., Guangzhou 510006, China.
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- H. Cheng
- Postdoctoral Fellow, Multi-Scale Mechanics, Faculty of Engineering Technology, MESA+, Univ. of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands. ORCID: .
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Description
<p>A series of high-pressure compression tests with various stress paths under monotonic and cyclic loadings were performed to examine the compression and particle crushing characteristics of silica sand in a dense state. Different stress paths were particularly designated to individually investigate the influences of mean and shear stress on particle crushing. Test results show that the degree of particle crushing increases with the stress level and is markedly affected by the stress paths. For each compression test following a designated stress path, an increase in the cyclic loading number also enhances the degree of particle crushing. Particle morphology is affected by the accompanying occurrence and evolution of grain damage. The relative breakage expresses a linear relationship with the maximum volumetric strain during monotonic and repeated compression loadings. A good correlation between the relative breakage and plastic work per unit volume is obtained for silica sand at various mean stresses regardless of the stress history. However, this correlation is affected by cyclic loading number because of different crushing mechanisms. During the entire cyclic compression process, the increasing rate of relative breakage is lower than the plastic work increment for dense silica sand as the cyclic loading progresses.</p>
Journal
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- International Journal of Geomechanics
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International Journal of Geomechanics 20 (3), 2020-03
American Society of Civil Engineers (ASCE)
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Details 詳細情報について
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- CRID
- 1360286993724397568
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- ISSN
- 19435622
- 15323641
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- Article Type
- journal article
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- Data Source
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- Crossref
- KAKEN
- OpenAIRE