Correlation between electrical resistivity and shear strength parameters in construction sites located in Lali city, Khuzestan Province, Iran


Department of Geophysics, Masjed- Soleiman Branch, Islamic Azad University, Masjed- Soleiman, Iran


Conventional methods for determining the geotechnical properties of the soil are usually costly, destructive and time-consuming. Electrical resistivity is one of the subsurface characteristics of soils that can easily be measured without any invasive action. It is very useful to develop an acceptable correlation between electrical resistivity and shear strength parameters in construction sites. In this study, a correlation was developed between the electrical resistivity and each of the parameters of cohesion and internal angle of friction, with laboratory measurements. Based on the regression analysis, there is a relatively strong correlation with the coefficient of 0.7769 between the electrical resistivity and the cohesion parameter. Regression analysis also shows a relatively good correlation between the electrical resistivity and the internal angle of friction parameter. The results showed that the electrical resistivity relationship with each of parameters of cohesion and internal angle of friction is linear
Keywords: Cohesion; Internal Angle of Friction; Correlation; Regression


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