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A stratum of sand and a stratum of clay have the same thickness of 3 m. The coefficient of compressibility of sand is 1/5th of coefficient of compressibility of clay and the permeability of sand is 1 0,000 times that of the clay. As suming the same void ratio, the ratio of the consolidation time for the clay to that of the sand is
If the time required for 50% consolidation of a remoulded sample of clay with single drainage is t, then the time required to consolidate the same sample of clay with same degree of consolidation but with double drainage is
Match List I and List  II on the basis of Terzaghi's one dimensional consolidation theory and select the
correct answer using the codes given below the lists (Notations have their usual meaning):
The unit of the coefficient of consolidation is
When the primary consolidation process in a soil is complete, then
The ultimate consolidation settlement of a structure resting on a soil
A normally consolidated clay layer settles by 25 mm when the effective stress is increased from 15 kPa to 30 kPa. If the effective stress is later increased further from 30 kPa to 60 kPa, then the additional settlement would be
Two specimens of clay A and B are tested in a consolidation apparatus.
If (m_{v})_{A} = 3.6 x 10^{4} m^{2}/ kN and
(m_{v})_{B} = 1.8 x 10^{4} m^{2}/kN,
(C_{v})_{A} = 3.8 x 10^{4} cm^{2}/s,
(C_{v})_{B} = 1.9 x 10^{4} cm^{2}/s,
then the ratio k_{A}/k_{B} is equal to
In consolidation testing, curve fitting method is used to determine
When the degree of consolidation is 50% , the time factor is about
31 docs280 tests

31 docs280 tests
