Concrete Technology Multiple Choice Questions & Answers (MCQs) on Shrinkage | Shrinkage of Concrete MCQs

Concrete Technology Multiple Choice Questions & Answers (MCQs) on Shrinkage | Shrinkage of Concrete MCQs

This set of Concrete Technology Multiple Choice Questions & Answers (MCQs) focuses on “Shrinkage”.

The shrinkage of concrete

[A] is proportional to contents of cement
[B] is directly proportional to water contents at the time of mixing
[C] increases with increase in the percentage of concrete
[D] all of the above

ANSWER= [C] increases with increase in the percentage of concrete
The correct answer for shrinkage of concrete increases with increase in the percentage of concrete.

Shrinkage of concrete depends upon

i) Humidity of atmosphere

ii) Passage of time

iii) Stress

The correct answer is

[A] (i) and (ii)
[B] (ii) and (iii)
[C] only (iii)
[D] All (i), (ii) and (iii)

ANSWER = [A] (i) and (ii)

The correct answer for Shrinkage of concrete depends upon is options [A] (i) and (ii)

Shrinkage of concrete depends upon the humidity of the atmosphere and passage of time

Approximate value of shrinkage strain n concrete is

[A] 0.03
[B] 0.003
[C] 0.0003
[D] 0.00003

ANSWER= [C] 0.0003

The correct answer for the Approximate value of shrinkage strain n concrete is 0.0003.

If C is creep coefficient, f is original pre-stress in concrete, m is a modular ratio, E is Young’s modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is _____?

[A] (1 – C) mf – eE
[B] (C – 1)mf + eE
[C] (C – 1)mf – eE
[D] (1 – C)mf + eE

ANSWER = [B] (C – 1)mf + eE

The correct answer for If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Young’s modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is (C – 1)mf + eE

How many types of shrinkages, caused due to loss of water?

[A] 1
[B] 2
[C] 3
[D] 4

ANSWER = [C] 3

How many types of shrinkages, caused due to loss of water is 3.

There are 3 types of shrinkage that are caused due to loss of water which are plastic, drying and autogenous.

What is Drying Shrinkage MCQ?

[A] It is not a result of any change in the concrete production process.
[B] Loss of water by evaporation from the surface of concrete or by the absorption by aggregate.
[C] The shrinkage take place after the concrete has set and hardened.
[D] No moisture movement to or from the past is permitted when the temperature is constant and some shrinkage may occur.

ANSWER= [C] The shrinkage takes place after the concrete has been set and hardened.
Explain:- Correct answer for the question what is drying shrinkage MCQ is [C] The shrinkage takes place after the concrete has been set and hardened.

Also Read: What is drying Shrinkage of Concrete || Plastic Shrinkage

Read More

Join Us for more Effective Study and share with friends and help them to grow