Coarse-fine mixtures subjected to repetitive Ko loading: Effects of fines fraction, particle shape, and size ratio
Name:
Coarse fine_coarse fine.pdf
Size:
9.434Mb
Format:
PDF
Description:
Accepted manuscript
Type
ArticleAuthors
Kim, Sang Yeob
Park, Junghee

Lee, Jong Sub
KAUST Department
Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)Physical Science and Engineering (PSE) Division
Date
2020-09-19Online Publication Date
2020-09-19Print Publication Date
2021-01Embargo End Date
2022-09-23Submitted Date
2020-04-30Permanent link to this record
http://hdl.handle.net/10754/665327
Metadata
Show full item recordAbstract
This study explores the effects of fines fraction, particle shape, and size ratio on the long-term response of sand-silt mixtures with fines fraction FF = 0-to-100% during Ko-loading cycles i = 104. The void ratio for all specimens evolves toward the asymptotic terminal void ratio eT that captures the transition from coarse-to-fine controlled behavior. Shear wave velocity versus intergranular eC and equivalent intergranular (eC)eq void ratios estimates the participation rate of fines-in-sand for the force chain. More fine particles contribute to the load-carrying skeleton as the particle shape becomes rounder and the size ratio decreases. In contrast, shear wave velocity against interfine eF and equivalent interfine (eF)eq void ratios reflects the reinforcing effect of coarse grains floating in the load-carrying fines matrix. The rounder sand in the fine-dominant matrix leads to more significant fabric changes. Clearly, there is a transition from coarse-to-fine controlled repetitive load-deformation response that promotes the reassessment of current soil classification systems.Citation
Kim, S. Y., Park, J., & Lee, J.-S. (2021). Coarse-fine mixtures subjected to repetitive Ko loading: Effects of fines fraction, particle shape, and size ratio. Powder Technology, 377, 575–584. doi:10.1016/j.powtec.2020.09.017Sponsors
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2020R1A2B5B03001470).Publisher
Elsevier BVJournal
Powder TechnologyAdditional Links
https://linkinghub.elsevier.com/retrieve/pii/S0032591020308810ae974a485f413a2113503eed53cd6c53
10.1016/j.powtec.2020.09.017