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Test: Concrete Technology - 3 - Civil Engineering (CE) MCQ


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

Test: Concrete Technology - 3 for Civil Engineering (CE) 2024 is part of Topicwise Question Bank for Civil Engineering preparation. The Test: Concrete Technology - 3 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Concrete Technology - 3 MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Concrete Technology - 3 below.
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Test: Concrete Technology - 3 - Question 1

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

Detailed Solution for Test: Concrete Technology - 3 - Question 1

The correct option is A Uniform rate of stress
The stress strain curve of concrete in compression is obtained by testing the cylindrical specimen under Uniform rate of stress.

Test: Concrete Technology - 3 - Question 2

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

Test: Concrete Technology - 3 - Question 3

The inelastic behaviour of concrete is due to the

Test: Concrete Technology - 3 - Question 4

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

Detailed Solution for Test: Concrete Technology - 3 - Question 4

Test: Concrete Technology - 3 - Question 5

As per Indian Standard specifications concrete is designated into

Test: Concrete Technology - 3 - Question 6

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

Test: Concrete Technology - 3 - Question 7

The unit weight of reinforced cement concrete is generally taken as

Test: Concrete Technology - 3 - Question 8

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

Test: Concrete Technology - 3 - Question 9

Presence of algae in concrete

Test: Concrete Technology - 3 - Question 10

The choice of mix properties of a concrete is independent of

Test: Concrete Technology - 3 - Question 11

Sulphur-impregnated concrete is obtained by

Test: Concrete Technology - 3 - Question 12

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

Test: Concrete Technology - 3 - Question 13

Light-weight concrete is used

Test: Concrete Technology - 3 - Question 14

Light-weight aggregate are produced by

Detailed Solution for Test: Concrete Technology - 3 - Question 14

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.

Test: Concrete Technology - 3 - Question 15

Shortcrete

Detailed Solution for Test: Concrete Technology - 3 - Question 15

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.

Test: Concrete Technology - 3 - Question 16

Guniting

Test: Concrete Technology - 3 - Question 17

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

Test: Concrete Technology - 3 - Question 18

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

Detailed Solution for Test: Concrete Technology - 3 - Question 18

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

Test: Concrete Technology - 3 - Question 19

Efflorescence in cement is caused due to an excess of

Detailed Solution for Test: Concrete Technology - 3 - Question 19

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.

Test: Concrete Technology - 3 - 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?

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