Exp.8 Triaxial Test
Triaxial shear strength test on soil measures the mechanical properties of the soil. In this
test, soil sample is subjected to stress, such that the stress resulted in one direction will be
different in perpendicular direction. The material properties of the soil like shear
resistance, cohesion and the angle of friction are determined from this test. The test is most
widely used and is suitable for all types of soils.
Triaxial Shear Test Apparatus
1. Triaxial testing machine complete with triaxial cell: This unit has the
provision to insert a cylindrical soil specimen that is sealed by means of rubber membrane
to restrict the entry of lateral fluid. Fluid pressure and the vertical stress are applied by
means of a piston arrangement. The unit also has the provision to prevent the drainage of
specimen. The fluid pressure in the cell can be measured by means of a pressure gauge.
2. Equipment for loading
3. Equipment to measure load and Deformation: Proving is used to measure the
load application by the piston. A dial gauge is used to measure the deformation of the
specimen
, Triaxial Shear Test Principle
A cylindrical specimen, generally having a length to diameter ratio of 2 is used in the test
Triaxial shear strength test on soil measures the mechanical properties of the soil. In this
test, soil sample is subjected to stress, such that the stress resulted in one direction will be
different in perpendicular direction. The material properties of the soil like shear
resistance, cohesion and the angle of friction are determined from this test. The test is most
widely used and is suitable for all types of soils.
Triaxial Shear Test Apparatus
1. Triaxial testing machine complete with triaxial cell: This unit has the
provision to insert a cylindrical soil specimen that is sealed by means of rubber membrane
to restrict the entry of lateral fluid. Fluid pressure and the vertical stress are applied by
means of a piston arrangement. The unit also has the provision to prevent the drainage of
specimen. The fluid pressure in the cell can be measured by means of a pressure gauge.
2. Equipment for loading
3. Equipment to measure load and Deformation: Proving is used to measure the
load application by the piston. A dial gauge is used to measure the deformation of the
specimen
, Triaxial Shear Test Principle
A cylindrical specimen, generally having a length to diameter ratio of 2 is used in the test
