Question

Match List-I {Type of shear tests) with List-II (Mohr circle and its envelope) and select the correct answer using the codes given below the lists:

List - I	List - II
A. Udrained test on normally consolidated saturated clays
B. Consolidated undrained test on normally consolidated saturated clays
C. Drained tests on saturated cohesive soil
D. Unconfined test on clays

Codes:
$ABCD$

• A. $1432$
• B. $1234$
• C. $4321$
• D. $3214$

Answer 1

The correct option is B $1234$

UU (unconsolidated undrained) test: In this, cell pressure is applied without allowing drainage. Then keeping cell pressure constant, deviator stress is increased to failure without drainage.
CU (consolidated undrained) test: In this, drainage is allowed during cell pressure application. Then without allowing further
drainage, deviator stress is increased keeping cell pressure constant.
CD (consolidated drained) test: This is similar to CU test except that as deviator stress is increased, drainage is permitted. The rate of loading must be slow enough to ensure no
excess pore water pressure develops.