1. Triaxial Tests

Try these first

1. 1.

   What does a triaxial test evaluate?

   Hint

   Think about soil behavior under pressure.

2. 2.

   Name one type of triaxial test.

   Hint

   Recall the types we discussed.

3. 3.

   What is the primary purpose of a triaxial test?

   • To measure shear strength of soil
   • To determine moisture content
   • To evaluate compressibility

   Hint

   Think about what we measure in land engineering.

4. 4.

   True or False: The UU test allows for drainage during the test.

   • True
   • False

   Hint

   Recall the rules of the test types.

5. 5.

   Given a soil specimen with an initial pore pressure of 50 kPa, determine how this might affect the failure envelope on a CU test when the axial stress applied is 100 kPa.

   Hint

   Focus on how effective stress impacts the failure conditions.

6. 6.

   For a CU test, if the cohesion (c) of the soil sample is found to be 10 kPa, what would be the expected shear strength at a stress of 60 kPa?

   Hint

   Use the Mohr-Coulomb equation to calculate shear strength.