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Consistency Limits

The plasticit...

Question

The plasticity index and the percentage of grain size finer than 2 microns of a clay sample are 25 and 15, respectively. Its activity ratio is

A

2.5

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B

1.67

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C

1.0

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D

0.6

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Solution

The correct option is B 1.67
(b)
$A c t i v i t y = \frac{P l a s t i c i t y I n d e x}{P e r c e n t o f c l a y p a r t i c l e s f i n e r t h a n 2 μ m}$

$= \frac{25}{15} = 1.67$

As activity is more than 1.25 so it is active soil.

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