Select the correct option with regard to the following two statements (S1, S2) pertaining to consolidation in soils.

S1: A soil is termed as normally consolidated if the present effective overburden pressure is less than the maximum to which the soil was ever been subjected to in the past.

S2: The larger the value of the coefficient of consolidation, the shorter it takes for full consolidation to occur.

S1 is false and S2 is true

Both S1 and S2 are false

Both S1 and S2 are true

S1 is true and S2 is false

The correct answer is `No. 1: S1 is false and S2 is true`

The process of gradual load transfer from pore water to soil skeleton and the corresponding gradual compression is termed consolidation.

Normally-Consolidated Soils:- If the present effective overburden pressure in a deposit is the maximum pressure to which the deposit has ever been consolidated at any time in the past, such a deposit s called a normally consolidated clay deposit.

These Soils have low to moderate plasticity include clays, silts, organic and micaceous silts with plasticity indexes up to 30 (as well as sands, gravels and porous rocks).

Statement:-2

From Taylor formula we have

\({T_V} = \frac{{{C_V}t}}{{{d^2}}}\)

Where

T_v = Specific Consolidation time

t = time

C_v = Consolidation coefficient

H = Drainage length of soft soil stratum

For the full degree of consolidation i.e. U= 100%. i.e. virtually complete consolidation, Tv = 1

∴ C_v ∝ 1/t

So, As C_V increases required time decreases.

S1 is false and S2 is true

Both S1 and S2 are false

Both S1 and S2 are true

S1 is true and S2 is false

The correct answer is `No. 1: S1 is false and S2 is true`

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S1 is false and S2 is true

Both S1 and S2 are false

Both S1 and S2 are true

S1 is true and S2 is false

The correct answer is No. 1: S1 is false and S2 is true

The correct answer is `No. 1: S1 is false and S2 is true`