What are elastic strains? - Concrete Technology Quiz

Civil Engineering : Concrete Technology - Quiz(MCQ)

What are elastic strains?

It is the time-dependent deformation that occurs on the prolonged application of stress

These deformations occur either on loss of moisture from the concrete on cooling of concrete

These are the instantaneous deformations that occur when an external stress is first applied

Any one or combinations of the above types of deformations in a hardened concrete leads to cracking

Correct Answer : These are the instantaneous deformations that occur when an external stress is first applied

Explanation : Elastic strain in concrete, as defined above, depends on the externally applied stress and the modulus of elasticity of concrete.

Recently Updated in Concrete Technology Questions

Which of the following compound is used for fine polishing?

Nitric oxide

Iron oxide

Silicon carbide

Aluminum oxide

Correct Answer : Option (D) : Aluminum oxide

Explanation : Powder form of aluminum oxide is used for fine polishing process. It is surface treatment process.

Maximum nominal size of aggregates to be used in concrete may be as large as possible within the limits prescribed by __________

IS 456-2010

IS 456-2000

IS 465-2000

IS 513-1999

Correct Answer : Option (B) : IS 456-2000

Explanation : Option can be eliminated because there is no such code. Maximum nominal size of aggregates to be used in concrete may be as large as possible within the limits prescribed by IS 456:2000.

Air contents should be _________ % by volume.

1-2

2-3

3-4

4-5

Correct Answer : Option (C) : 3-4

Explanation : This type of cement was first of all developed in U.S.A. It is recommended that air contents should be 03-04 % by volume.

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