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Shear strength is defined as the maximum shear stress that the soil may sustain without experiencing failure. Shear strength is a critical parameter in geotechnical projects. It is needed to derive the bearing capacity, design retaining walls, evaluate the stability of slopes and embankments, etc.
According to the Mohr-Coulomb failure criterion (equation 1), the shear strength of soils consists of two components, cohesion (c) and frictional angle (φ) and is also dependent on the normal effective stress (σ').
τ=c+σ’tanφ (1)
Strength parameters (cohesion and friction angle) are derived both from in situ and laboratory testing.
The most common in-situ tests are the following:
The most common laboratory tests are the following:
Laboratory testing is an integral part of geotechnical engineering research and practice. A well...
Shear strength is the ability of a material to resist shear forces - that is, forces that produce a...
Introduction The Direct Shear Test is an experimental procedure conducted in geotechnical engi...
Soil dynamic laboratory tests are conducted on specimens retrieved from the area of interest, and...
Vane shear testing is one of the most common in-situ methods for the estimation of the undrained sh...
Testing rocks and aggregates are rarely covered in soil testing books and there are no separate book...
In order to obtain stresses and deformations in a geotechnical analysis, finite element analyses...