In order to study the shear behaviour in Yamuna sand, a direct shear strength test is conducted for two sets of states – dense and loose. To enhance the study, the effect of water on Yamuna sand is considered in terms of the drainage path and saturation state of the Yamuna sand. To describe the strength parameter in the loaded soil mass are the cohesion and internal frictional angle of the soil. The shear strength determination to study the shear strength after tillage a schematic study on Yamuna sand is conducted. Yamuna sand which is present on the banks of river Yamuna in around Delhi is taken for this study. The shear strength behaviour of Yamuna sand was tested through triaxial and direct shear. The angle of internal friction is higher in the CD triaxial test as compared to the direct shear test. Also, some cohesive strength is also found in the CD triaxial test which was not found in the Direct Shear Test (DST). The direct shear test was conducted for dense and loose states of relative density and saturated state of Yamuna sand. The angle of internal friction was found to be highest in the saturated state of Yamuna sand. Among dense and loose, dense state gives a higher internal angle of friction viz. 22.91O, 28.64O and 57.29O which is lesser than CD trixial tests. In conclusion, compaction is an important property of the sands which causes the appreciable increase in shear strength of soil when they near optimum moisture content.
Author
(s) Details
Sandeep
Bhardwaj
College of Agriculture Engineering and Technology, CCS Haryana
Agricultural University, Hisar, Haryana, India.
Please see the book here:- https://doi.org/10.9734/bpi/geserh/v4/4218
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