Mohr-Coulomb Circle
Sample Preparation: A soil sample is prepared and placed in a triaxial cell. The sample is typically cylindrical and is fully saturated with water to ensure accurate results.
Confining Pressure: The triaxial cell is filled with a pressurized fluid (usually water), which applies a confining pressure around the soil sample. This simulates the in-situ stress conditions that the soil would experience underground.
Axial Load Application: An axial load is applied to the soil sample using a piston. This load is increased gradually until the sample fails, which helps in determining the shear strength parameters of the soil.
Measurement and Analysis: During the test, various parameters such as axial load, cell pressure, back pressure, and axial displacement are measured. These measurements help in understanding the stress-strain relationship of the soil and its mechanical properties.