Effects of particle fractions on the Bingham yield stress and viscosity of fine-coarse particle suspensions

Litan Dey, Chyan Deng Jan, Ji Shang Wang

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

The rheological behaviors of highly concentrated fine particle suspensions (clay-silt-water mixtures) and coarse particle suspensions (coarse particles within a fine particle suspension) were investigated in this study. Experimental results demonstrated that the Bingham Fluid Model with two rheological parameters, Bingham yield stress and viscosity, well characterized the rheological behavior of fine particle suspensions at shear rates between 4 and 20 s−1. The inclusion of coarse particles within a fine particle suspension induced an enhancement to the rheological parameters. The rheological parameters of a coarse particle suspension not only depend on its total particle fraction but also on its relative fine/coarse particle fractions. Empirical equations of these two parameters were proposed, quantitatively related to both fine and coarse particle fractions. Results indicated that the Bingham yield stress and viscosity are much more (an order larger) sensitive to changes in fine particle fraction than to changes in coarse particle fraction.

原文English
頁(從 - 到)2960-2970
頁數11
期刊Journal of Mountain Science
18
發行號11
DOIs
出版狀態Published - 2021 11月

All Science Journal Classification (ASJC) codes

  • 全球和行星變化
  • 地理、規劃與發展
  • 地質學
  • 地表過程
  • 自然與景觀保護

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