For a Quick Soil, the Critical Gradient is

For a quick soil, having void ratio 0.75 and specific gravity as 2.75, the critical gradient is 1.00

Solution

Given, e=0.75

G=2.75

We know that for a quick soil, the critical gradient is given by,

i_c = G-1/1+e = (1-n)(G-1)

i_c = 2.65-1/1+0.75 = 1.65/1.75=1.00

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