Estimating the Shear Modulus of Soils Based on Surface Roughness

Abstract

The purpose of this paper is to estimate the initial shear modulus of soils based on the surface roughness of materials. Interface shear modulus depends on soil type & gradation and surface roughness of specimens. By considering all the factors, a simple mathematical equation was given by Murugan et al. (2014) for the interface shear modulus between soil and structural material. Interface shear modulus of soil was evaluated by using the mathematical equation given by Murugan et al. (2014).Result indicates that interface shear modulus increases with the increment of the surface roughness of the specimens used in this study. The highest peak shear modulus is achieved when the surface is rough. This study is very important in the field of earthquake geotechnical engineering.