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Variation of shear resistance parameters in fine grain soils due to willow roots density

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    • M. H. Davoudi
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Abstract

Stabilization of river terraces and natural soil slopes in rangelands by means of tree roots as a reinforcement agent is an environmental adopted method which needs to be developed. In this research a series of tests was carried out on soil blocks containing willow roots and without roots using a large scale in situ direct shear test apparatus. The results were analyzed based on direct shear theory to calculate the cohesion and internal friction angle of rooted and non-rooted soil. The results reveal that in spite of a slight decrease of 8% in the internal friction angle, the appearance cohesion of lean clay soils increase significantly up to 130%. The results of this research are presented in forms of linear and logarithmic relations between increased shear strength and root density at different depths of soil.

Keywords

  • cohesion
  • Internal friction angle
  • Lean clay
  • Root density
  • shear strength
  • Stabilization
  • Willow
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Journal of Range and Watershed Managment
Volume 62, Issue 2 - Serial Number 325065
October 2009
Pages 231-245
Files
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  • PDF 331.83 K
Share
How to cite
  • RIS
  • EndNote
  • Mendeley
  • BibTeX
  • APA
  • MLA
  • HARVARD
  • VANCOUVER
Statistics
  • Article View: 2,355
  • PDF Download: 4,476

APA

Davoudi, M. H. (2009). Variation of shear resistance parameters in fine grain soils due to willow roots density. Journal of Range and Watershed Managment, 62(2), 231-245.

MLA

M. H. Davoudi. "Variation of shear resistance parameters in fine grain soils due to willow roots density". Journal of Range and Watershed Managment, 62, 2, 2009, 231-245.

HARVARD

Davoudi, M. H. (2009). 'Variation of shear resistance parameters in fine grain soils due to willow roots density', Journal of Range and Watershed Managment, 62(2), pp. 231-245.

VANCOUVER

Davoudi, M. H. Variation of shear resistance parameters in fine grain soils due to willow roots density. Journal of Range and Watershed Managment, 2009; 62(2): 231-245.

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