A typical triaxial test involves confining a cylindrical soil or rock specimen in a pressurised cell to simulate a stress condition and then shearing to failure, in order to determine the shear strength properties of the sample. Most triaxial tests are performed on high quality undisturbed specimens.

What does the triaxial test tell you?

A triaxial test is performed on a cylindrical core soil or rock sample to determine its shear strength. The triaxial test attempts to replicate the in-situ stresses (stresses in the original place the soil sample was taken) on the core soil or rock sample.

Why do we do triaxial test?

Typically, Triaxial Testing is used to solve problems of stability by: Determining the shear strength and stiffness of soil when retaining reservoirs of water. Measuring stress/strain behavior. Monitoring the internal response of the particulate medium.