Lecture 4

Question 1

Define the limit liquid

Answer 1

Upper limit of water content for plastic behaviour

Question 2

Define the plastic limit

Answer 2

Lower limit of water content to exhibit plastic behaviour

Question 3

Provide information on the plastic limit (graph axis, ranges for plasticity, and equation)

Answer 3

PI = LL - PL

Y- Axis = plastic limit

X - Axis = liquid limit

0 = cohesionless soil

0-5 = slightly plastic

5-10 = low plasiticty

10-20 = medium plasticity

20-40 = high plasticity

> 40= very high plasticity