1.3. Consolidated-undrained test (CU test)

Try these first

1. 1.

   What does the CU test measure?

   Hint

   Think about what the acronym CU refers to.

2. 2.

   What parameters does the CU test help determine?

   Hint

   Consider what factors contribute to soil strength.

3. 3.

   What does the CU test mainly assess?

   • A. Effective stress
   • B. Shear strength under undrained conditions
   • C. Consolidation process

   Hint

   Focus on the undrained condition.

4. 4.

   True or False: The interpretation of CU test results can help design safe foundations.

   • True
   • False

   Hint

   Think about why shear strength is important in construction.

5. 5.

   A triaxial test shows total stress at failure as 250 kPa with a pore water pressure of 70 kPa. Calculate the effective stress and interpret its significance.

   Hint

   Recall the effective stress principle.

6. 6.

   Given various triaxial tests on saturated clay with different confining pressures, determine how changing conditions affect the shear strength parameters.

   Hint

   Think about how pressure influences overall soil strength.