Test: Concrete Technology - 3

Question 1

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

Accepted Answer

Uniform rate of stress

Answer

Uniform rate of strain

Answer

Constant stress condition

Answer

Constant strain condition

Question 2

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

Accepted Answer

Higher value of Poisson’s ratio

Answer

Lower value of Poisson’s ratio

Answer

The same value of Poisson’s ratio

Answer

All of the above depending upon the test conditions

Question 3

The inelastic behaviour of concrete is due to the

Accepted Answer

Use of aggregates

Answer

Shrinkage in concrete

Answer

Propagation of bond and mortar cracks

Answer

Presence of macro and micro cracks

Question 4

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

Accepted Answer

10%

Answer

50%

Answer

20%

Answer

5%

Question 5

As per Indian Standard specifications concrete is designated into

Accepted Answer

7 grades

Answer

3 grades

Answer

5 grades

Answer

10 grades

Question 6

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

Accepted Answer

3

Answer

2

Answer

5

Answer

6

Question 7

The unit weight of reinforced cement concrete is generally taken as

Accepted Answer

25 kN/m3

Answer

18 kN/m3

Answer

22 kN/m3

Answer

24 kN/m3

Question 8

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

Accepted Answer

Alcohol

Answer

Sewage water

Answer

Sulphuric acid

Answer

Vegetable oil

Question 9

Presence of algae in concrete

Accepted Answer

All of the above

Answer

Reduces its strength

Answer

Reduces its bond strength

Answer

Causes a large entrainment of air

Question 10

The choice of mix properties of a concrete is independent of

Accepted Answer

Batching, mixing placing and compaction techniques

Answer

Grade designation

Answer

Maximum nominal size of aggregate

Answer

Minimum water-cement ratio

Question 11

Sulphur-impregnated concrete is obtained by

Accepted Answer

Emptying the pores in the conventional concrete under vacuum and sucking the liquid sulphur in the pores

Answer

Mixing the sulphur powder as an ingredient of normal concrete and heating the cured concrete at high temperature

Answer

Applying a coating of molten sulphur on the surface of the concrete

Answer

Any of the above

Question 12

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

Accepted Answer

Incorporating fibres in the concrete

Answer

Providing reinforcement bars

Answer

Polymer impregnation

Answer

All of the above

Question 13

Light-weight concrete is used

Accepted Answer

For non load bearing and partition walls

Answer

For reducing the dead weight of structures

Answer

For improving thermal insulation

Answer

In filler wall panels in multistorey buildings

Question 14

Light-weight aggregate are produced by

Accepted Answer

Sintering fly ash

Answer

Bloating clays with or without additives

Answer

Using blast furnace slag

Answer

Any of the above

Question 15

Shortcrete

Accepted Answer

All of the above

Answer

Is mortar or very fine concrete deposited by jetting it with high velocity on to the prepared surface

Answer

Is frequently more economical than conventional concrete

Answer

Is very useful for restoration and repair of the damaged concrete structures

Question 16

Guniting

Accepted Answer

All of the above

Answer

Is the technique of depositing very thin layers of mortar in each pass of nozzle than that available with the shotcrete

Answer

Mix is 1:3 to 1:4.5 with a water-cement ratio of about 0.30

Answer

Requires careful and skilful handling of nozzle for high quality finish work

Question 17

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

Accepted Answer

Calcium chloride

Answer

Gypsum

Answer

Calcium carbonate

Answer

None of the above

Question 18

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

Accepted Answer

0.85 m3

Answer

0.95 m3

Answer

0.75 m3

Answer

0.65 m3

Question 19

Efflorescence in cement is caused due to an excess of

Accepted Answer

Alkalies

Answer

Alumina

Answer

Iron oxide

Answer

Silica

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?

Accepted Answer

1 and 2

Answer

2 and 3

Answer

1 alone

Answer

1, 2 and

Concrete Technology - 3 - Free MCQ Practice Test with solutions, GATE Civil

MCQ Practice Test & Solutions: Test: Concrete Technology - 3 (20 Questions)

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

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

The inelastic behaviour of concrete is due to the

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

As per Indian Standard specifications concrete is designated into

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

The unit weight of reinforced cement concrete is generally taken as

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

Presence of algae in concrete

The choice of mix properties of a concrete is independent of

Sulphur-impregnated concrete is obtained by

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

Light-weight concrete is used

Light-weight aggregate are produced by

Shortcrete

Guniting

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

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

Efflorescence in cement is caused due to an excess of

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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Topicwise Question Bank for Civil Engineering

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Concrete Technology - 3 - Free MCQ Practice Test with solutions, GATE Civil

MCQ Practice Test & Solutions: Test: Concrete Technology - 3 (20 Questions)

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

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

The inelastic behaviour of concrete is due to the

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

As per Indian Standard specifications concrete is designated into

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

The unit weight of reinforced cement concrete is generally taken as

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

Presence of algae in concrete

The choice of mix properties of a concrete is independent of

Sulphur-impregnated concrete is obtained by

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

Light-weight concrete is used

Light-weight aggregate are produced by

Shortcrete

Guniting

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

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

Efflorescence in cement is caused due to an excess of

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?

Topicwise Question Bank for Civil Engineering

Topicwise Question Bank for Civil Engineering

Top Courses for Civil Engineering (CE)

About this Civil Engineering (CE) Practice Test

Explore more Civil Engineering (CE) Study Resources

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?