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Comparison of Shear Strength Parameters of Well Graded and Poorly Graded Sand with Percentage Fines Replaced with Percentage Kaolin

Author(s):

Foram P. Savaliya , L.D. COLLEGE OF ENGINEERING; P. J. Mehta, APPLIED MECHANICS DEPARTMENT, L. D. COLLEGE OF ENGINEERING

Keywords:

Sandy Soil, Kaolin, Direct Box Shear Test, Degree of Saturation

Abstract

Shearing resistance of soil is very important while designing various structures which have direct contact with soil, for example, sheet piles, retaining walls and shallow foundations. Also, materials forming part of rock fill dams, glacial tills, mudflows, debris flows, soli fluctuation sheets, residual and colluvial soil deposits have a distinct structure, consisting of a mixture of large particles (gravel or hard clay fragments) and a soft matrix of clay. Mainly the foundation structures are designed with the consideration that it would be resting either on pure sand or clay bed, but on contrary to this stratified soil deposits pertain in the actual field, this makes the study of shear strength of made up soils an important factor to be evaluated. For the purpose of evaluating the same, the present research aims to study the shear strength parameters of well graded and poorly graded sand compacted at maximum dry density under varying degree of saturation as 0%, 50%, 75% and 100% with and without percentage fines (i.e. soil particles passing 75µ IS sieve) replaced by equivalent percentage of kaolin. For fulfilling the agenda of present study total 36 numbers of direct box shear test were performed. Direct box shear test was commenced taking Indian Standards as reference. Results depicted that as degree of saturation increased the angle of internal fiction and cohesion decreased in both the condition i.e. with and without replacement of percentage fines with percentage kaolin.

Other Details

Paper ID: IJSRDV5I120394
Published in: Volume : 5, Issue : 12
Publication Date: 01/03/2018
Page(s): 1110-1113

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