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Compressibility Parameters

In a consolid...

Question

In a consolidation test void ratio decreased from 0.80 to 0.70 when the load was changed from $40 k N / m^{2} t o 80 k N / m^{2}$ . What is the compression index?

A

0.14

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B

0.16

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C

0.33

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D

0.66

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Solution

The correct option is C 0.33
Compression index

$C_{c} = \frac{e_{0} - e_{f}}{l o g (σ_{f} / σ_{0})}$

$= \frac{0.80 - 0.70}{log (80 / 40)} = 0.33$

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