Test: Secondary Consolidation & Three Dimensional Consolidation - Civil Engineering (CE) MCQ

# Test: Secondary Consolidation & Three Dimensional Consolidation - Civil Engineering (CE) MCQ

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## 10 Questions MCQ Test Soil Mechanics - Test: Secondary Consolidation & Three Dimensional Consolidation

Test: Secondary Consolidation & Three Dimensional Consolidation for Civil Engineering (CE) 2024 is part of Soil Mechanics preparation. The Test: Secondary Consolidation & Three Dimensional Consolidation questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Secondary Consolidation & Three Dimensional Consolidation MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Secondary Consolidation & Three Dimensional Consolidation below.
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Test: Secondary Consolidation & Three Dimensional Consolidation - Question 1

### Even after the excess pore pressure due to consolidation is dissipated, change in void ratio continues and this phenomenon is known as _____________

Detailed Solution for Test: Secondary Consolidation & Three Dimensional Consolidation - Question 1

The secondary consolidation occurs at a very slow rate. Even after the excess pore pressure due to consolidation is dissipated, change in void ratio continues and this phenomenon is known as secondary consolidation.

Test: Secondary Consolidation & Three Dimensional Consolidation - Question 2

### There is plastic readjustment of soil particles during _____________

Detailed Solution for Test: Secondary Consolidation & Three Dimensional Consolidation - Question 2

During the secondary consolidation, there is relative plastic readjustment of soil particles and of the absorbed water due to the continued stress and progressive fracture of some soil particles.

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Test: Secondary Consolidation & Three Dimensional Consolidation - Question 3

### Terzaghi’s theory of consolidation is invalid for ________

Detailed Solution for Test: Secondary Consolidation & Three Dimensional Consolidation - Question 3

Since the dissipation of the excess hydrostatic pressure does not govern the secondary consolidation, the Terzaghi’s theory of consolidation is in valid as it cannot be used to find the rate of secondary consolidation.

Test: Secondary Consolidation & Three Dimensional Consolidation - Question 4

Secondary compression proceeds linearly with ________

Detailed Solution for Test: Secondary Consolidation & Three Dimensional Consolidation - Question 4

It is often assumed that the secondary compression proceeds linearly with the logarithm of time. It appears as a straight line in the graph in the plot of voids ratio as a function of logarithm of time.

Test: Secondary Consolidation & Three Dimensional Consolidation - Question 5

The secondary consolidation is represented by __________

Detailed Solution for Test: Secondary Consolidation & Three Dimensional Consolidation - Question 5

The secondary consolidation is represented by the equation of,

Where α = coefficient representing the rate of secondary compression
t1 and t2 = total elapsed time since load was applied to the soil.

Test: Secondary Consolidation & Three Dimensional Consolidation - Question 6

Secondary consolidation is also known as __________

Detailed Solution for Test: Secondary Consolidation & Three Dimensional Consolidation - Question 6

Secondary consolidation is also known as secondary compression. During the secondary compression, some of the highly viscous fluids between the point of contact, is forced out from between the grains.

Test: Secondary Consolidation & Three Dimensional Consolidation - Question 7

In many soil deposits, the secondary consolidation is neglected.

Detailed Solution for Test: Secondary Consolidation & Three Dimensional Consolidation - Question 7

In many soil deposits, the secondary consolidation is so small and insignificant that it can be neglected. Also for the secondary consolidation to occur, it takes a lot of time.

Test: Secondary Consolidation & Three Dimensional Consolidation - Question 8

Secondary consolidation starts in the range of primary consolidation itself.

Detailed Solution for Test: Secondary Consolidation & Three Dimensional Consolidation - Question 8

Secondary consolidation starts in the range of primary consolidation itself, although ots magnitude is very small. This is one of the reason why the experimental curve is in agreement with the Terzaghi’s theory up to U = 60%.

Test: Secondary Consolidation & Three Dimensional Consolidation - Question 9

Secondary consolidation may not constitute a substantial percentage of total settlement for __________

Detailed Solution for Test: Secondary Consolidation & Three Dimensional Consolidation - Question 9

For highly organic soils, highly micaceous soils and some loosely deposited clays, secondary consolidation may constitute a substantial percentage of total settlement.

Test: Secondary Consolidation & Three Dimensional Consolidation - Question 10

For a soil at a given void ratio, the coefficient of compressibility _____________

Detailed Solution for Test: Secondary Consolidation & Three Dimensional Consolidation - Question 10

For a soil at a given void ratio, the coefficient of compressibility increases with increase in magnitude of consolidating pressure, and hence it should be determined in the laboratory consolidation test for the range of pressure that would be encountered in practice.

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## Soil Mechanics

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