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Question
A saturated soil has compression index of 0.28, the void ratio at a stress 12 kN/m2 is 2.05 and its permeability is 35 × 10-3 mm/s. What is the change in void ratio if stress is increased to 21.6 kN/m2 ? (take log10 (1.8) as 0.255)
A.
0.0615
B.
0.0117
C.
0.0666
D.
0.0714
Answer ( Option D)

0.0714

Solution

We know that,
Cc = compression index
Δe = change in void ratio
σ1 = initial effective stress
σ2 = final effective stress
Hence, the correct option is (d).

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