期刊
GEOPHYSICAL RESEARCH LETTERS
卷 49, 期 13, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2022GL098678
关键词
jamming density; bi-dispersity; granular material; volume-potential; Gibbs energy; thermodynamics
资金
- National Science Foundation of the United States [CMMI-1917238]
This study explores the jamming density of soil with strong dispersity by introducing excess volume-potentials and a mathematical model based on the second law of equilibrium in thermodynamics. The approach is validated using experimental results and aims to provide a deeper understanding of the link between jamming density, packing dispersity, and the second law of thermodynamics.
Jamming is the transition from a fluid-like state to a solid-like state of a packing system. Recent studies have shown that jamming transition depends upon many factors: particle shape, friction/cohesion between particles, particle size dispersity, the stress of the packing, etc. This study aims to contribute to this growing area of research by exploring the jamming density of soil with strong dispersity. In analogous to Gibbs excess energy, we introduce excess volume-potentials for each species. We then proposed a mathematical model to quantitatively compute the jamming density based on the second law of equilibrium in thermodynamics. This approach is validated using experimental results on glass beads and on silty sand. It is hoped that this study will provide to a deeper understanding of the link between jamming density, packing dispersity and the second law of thermodynamics.
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