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

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

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

What is carbonation shrinkage?

[A] It occurs when the concrete is exposed to air containing carbon dioxide
[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= [A] It occurs when the concrete is exposed to air containing carbon dioxide
Explain:- Correct answer for the question What is carbonation shrinkage is [A] It occurs when the concrete is exposed to air containing carbon dioxide

What is autogeneous shrinkage?

[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= [D] No moisture movement to or from the past is permitted, when the temperature is constant and some shrinkage may occur.
Explain:- Correct answer for the question What is autogeneous shrinkage? is [D] No moisture movement to or from the past is permitted, when the temperature is constant and some shrinkage may occur.

What is plastic shrinkage?

[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= [B] Loss of water by evaporation from the surface of concrete or by the absorption by aggregate.

Explain:- Correct answer for the question What is plastic shrinkage is [B] Loss of water by evaporation from the surface of concrete or by the absorption by aggregate.

Drying shrinkage can be reduced by

[A] Using a practical amount of aggregate
[B] Using shrinkage compensating cement
[C] Lowest usable water content
[D] All of the above

ANSWER= [D] All of the above

Explain:- Correct answer for the question Drying shrinkage can be reduced by is Using practical amount of aggregate, Using shrinkage compensating cement, Lowest usable water content means All of the above

In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively

[A] compressive and tensile
[B] tensile and compressive
[C] both compressive
[D] both tensile

ANSWER = [B] tensile and compressive

In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively is tensile and compressive

How many types of shrinkages, caused due to cooling and carbonation?

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

ANSWER = [B] 2

There are 2 types of shrinkage which are caused due to cooling and carbonation.

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

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