In the context of shear strength of soil, which of the following statements is/are CORRECT?
- The unconfined compression test is a special case of the unconsolidated-undrained (UU) triaxial tests.
- The shear strength parameters obtained from the consolidated-drained (CD) triaxial tests should be used to analyse rapid construction in clay.
- Vane shear test is commonly used for determining in situ undrained strength of saturated clay soils.
- In an unconsolidated-undrained (UU) triaxial tests, the angle of internal friction $(\phi)$ is equal to zero.
