A soil sample is tested for its plasticity index and the obtained value of the plasticity index is 21. In such case, the soil sample can be described as
A soil sample is tested for its plasticity index and the obtained value of the plasticity index is 21. In such case, the soil sample can be described as :
Right Answer is:
Highly plastic
SOLUTION
The plastic index is defined as the difference between the liquid limit and the plastic limit.
IP = wL – wP
Where,
wL = Liquid Limit
wP = Plastic limit
|
IP |
Plasticity |
|
0 |
Non-Plastic |
|
1 to 5 |
Slight Plastic |
|
5 to 10 |
Low Plastic |
|
10 to 20 |
Medium Plastic |
|
20 to 40 |
Highly Plastic |
|
>40 |
Very High Plastic |
Given plastic limit 21%, therefore, soil sample is Highly plastic