GEO TERMS: TIME RATE OF CONSOLIDATION Flashcards
Terzaghi’s theory of one dimensional consolidation assumes _____
A. soil is homogeneous and fully saturated
B. water and soil particles are incompressible
C. deformation of the soil, in entirely due to change in volume
D. all the above
D. all the above
pick up the correct statement from the following:
A. coefficient of compressibility is the decrease in void ratio per unit increase of pressure
B. the percent settlement at any time is called degree of consolidation
C. time factor is a dimensionless quantity
D. all the above
D. all the above
direct measurement of permeability of the specimen at any stage of loading can be made _____
A. only in fixed ring type consolidometer
B. only in floating ring type consolidometer
C. both A and B
D. none of the above
A. only in fixed ring type consolidometer
Skempton’s pore pressure coefficient B for saturated soil is _____
A. 1
B. zero
C. between 0 and 1
D. greater than 1
A. 1
degree of consolidation is _____
A. directly proportional to time and inversely proportional to drainage path
B. directly proportional to time and inversely proportional to square of drainage path
C. directly proportional to drainage path and inversely proportional to time
D. directly proportional to square of drainage path and inversely proportional to time
B. directly proportional to time and inversely proportional to square of drainage path
Terzaghi’s theory of one dimensional consolidation assumes _____
A. load is applied in one direction
B. coefficient of permeability is constant
C. excess pore water drains out only in the vertical direction
D. all the above
D. all the above
the consolidation time for soils…
A. increases with increasing compressibility
B. decreases with increasing permeability
C. increases rapidly with increasing size of soil mass
D. all the above
D. all the above
within the consolidation process of a saturated clay…
A. a gradual increase in neutral pressure and a gradual decrease in effective pressure take place and sum of the two is constant
B. a gradual decrease in neutral pressure and a gradual increase in effective pressure take place and sum of the two is constant
C. both neutral pressure and effective pressure decrease
D. both neutral pressure and effective pressure increase
B. a gradual decrease in neutral pressure and a gradual increase in effective pressure take place and sum of the two is constant
coefficient of consolidation for clays normally…
A. decreases with increase in liquid limit
B. increases with increase in liquid limit
C. first increases and then decreases with increase in liquid limit
D. remains constant at all liquid limits
A. decreases with increase in liquid limit
the ratio of settlement at any time “t” to the final settlement is known as _____
A. co-efficient of consolidation
B. degree of consolidation
C. consolidation index
D. consolidation of undisturbed soil
B. degree of consolidation
time factor for a clay layer is _____
A. a dimensional parameter
B. directly proportional to permeability of soil
C. inversely proportional to drainage path
D. independent of thickness of clay layer
B. directly proportional to permeability of soil
coefficient of consolidation of a soil is affected by _____
A. compressibility
B. permeability
C. both compressibility and permeability
D. none of the above
C. both compressibility and permeability
the compression resulting from a long term static load and consequent escape of pore water is known as _____
A. compaction
B. consolidation
C. swelling
D. none of these
B. consolidation
