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Concrete Technology - 3


20 Questions MCQ Test Topicwise Question Bank for GATE Civil Engineering | Concrete Technology - 3


Description
This mock test of Concrete Technology - 3 for Civil Engineering (CE) helps you for every Civil Engineering (CE) entrance exam. This contains 20 Multiple Choice Questions for Civil Engineering (CE) Concrete Technology - 3 (mcq) to study with solutions a complete question bank. The solved questions answers in this Concrete Technology - 3 quiz give you a good mix of easy questions and tough questions. Civil Engineering (CE) students definitely take this Concrete Technology - 3 exercise for a better result in the exam. You can find other Concrete Technology - 3 extra questions, long questions & short questions for Civil Engineering (CE) on EduRev as well by searching above.
QUESTION: 1

The stress and strain curve of concrete in compression is obtained by testing the cylindrical specimen under

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QUESTION: 2

As compared to the static tests the dynamic tests on concrete give

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QUESTION: 3

The inelastic behaviour of concrete is due to the

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QUESTION: 4

The tensile strength of concrete is approximately what per cent of compressive strength of concrete?
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QUESTION: 5

As per Indian Standard specifications concrete is designated into
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QUESTION: 6

For compressive strength determination the minimum number of cubes required in a sample are
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QUESTION: 7

The unit weight of reinforced cement concrete is generally taken as
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QUESTION: 8

Which one of the following does not react with concrete? :
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QUESTION: 9

Presence of algae in concrete
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QUESTION: 10

The choice of mix properties of a concrete is independent of
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QUESTION: 11

Sulphur-impregnated concrete is obtained by
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QUESTION: 12

The extent and propagation of cracks in concrete can be controlled by
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QUESTION: 13

Light-weight concrete is used
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QUESTION: 14

Light-weight aggregate are produced by
Solution:

One of the potential ways of bulk disposal and gainful use of fiyash in an economical manner is to convert the fiyash into more usable and manageable form such as lightweight aggregate. Sintered fiy as lightweight aggregate is manufactured by sintering the fiyash pellets in a vertical shaft kiln. The aggregate is suitable for use in production of structural lightweight concrete and precast lightweight concrete units for the use as load bearing and nonload bearing units.

QUESTION: 15

Shortcrete
Solution:

Shotcrete is mortar or very fine concrete deposited by jetting or impacting it with high velocity (pneumatically projected or sprayed) on to a prepared surface. Shotcrete is frequently more economical than conventional concrete because of less formwork requirements, requiring only a small portable plant for manufacture and placement.

QUESTION: 16

Guniting
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QUESTION: 17

The most common admixture which is used to accelerate the initial set of concrete is
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QUESTION: 18

To make one cubic metre of 1:2:4 by volume concrete, the volume of coarse aggregates required is
Solution:

1 m3 freshly mixed concrete corresponds, to 1.54 m3 of dry volume of concrete.
Summation of proportions = 1 + 2 + 4 = 7

(1 m3 cement equals 30 bags of cement or 1500 kg cement)
Sand = 0.22 x 2 = 0.44 m3
Coarse aggregate = 0.22 x 4 = 0.88 m3

QUESTION: 19

Efflorescence in cement is caused due to an excess of
Solution:

Efflorescence is a deposit of salts, usually white, on the surface of bricks and blocks after being laid. The salts usually come from ground water or out of the mortar, but may also, come from within the masonry units themselves.

QUESTION: 20

Consider the following statements:
Shrinkage of concrete depends upon the
1. relative humidity of the atmosphere
2. passage of time
3. applied stress
Which of these statements is/are correct?
Solution:

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