Question

Name the field test to evaluate sensitivity of soft clay:

• A. Standard penetration test
• B. Plate load test
• C. Pressure meter test
• D. Vane shear test

Hint:

Vane Shear Test is commonly used for: \[ \boxed{ \begin{aligned} &\text{Soft saturated clays} &\text{Undrained shear strength} &\text{Sensitivity determination} \end{aligned} } \]

Answer 1

The Correct Option is D

Step 1: Recall the definition of sensitivity. Sensitivity of clay is defined as \[ S_t=\frac{\text{Undisturbed shear strength}}{\text{Remoulded shear strength}}. \]

Step 2: Identify the appropriate field test. The vane shear test is specially developed for soft saturated clays. It measures the undrained shear strength of both undisturbed and remoulded soil, allowing the sensitivity to be determined. Hence, \[ \boxed{\text{Vane shear test}} \] Therefore, \[ \boxed{(D)} \] is the correct answer.