SSC JE Civil Engineering 23-Mar-2021 Shift 1 Paper

Question : 157 of 200

Marks: +1, -0

Activity of soil is ratio of the plasticity index to:

percentage by weight of clay fraction
percentage of sensitivity
liquidity index
percentage of compressive strength

Solution:

Concept:
The Activity of the soil (A)1The activity of the soil is given by the ratio of the plasticity index (

\I_\p

) and the percentage of clay fraction (C) in the soil.
It indicates water absorption capacity or indicates swelling and shrinkage characteristics.
Activity

{\A}_{{\C}}={{ \Plasticity \Index }}/{{ \Per \cent \of \clay \particles \finer \than } 2 \μ\m

So, C = Percentage of clay fraction finer than 2 μ

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