Specified compressive strength of concrete is obtained from cube tests at the end of

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Specified compressive strength of concrete is obtained from cube tests at the end of

A. 3 days

B. 7 days

C. 21 days

D. 28 days

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A beam curved in plan is designed for

A. Bending moment and shear

B. Bending moment and torsion

C. Shear and torsion

D. Bending moment, shear and torsion

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To minimise the effect of differential settlement, the area of a footing should be designed for

A. Dead load only

B. Dead load + live load

C. Dead load + fraction of live load

D. Live load + fraction of dead load

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The commercial name of white and coloured cement in India, is

A. Colorcrete

B. Silvicrete

C. Snowcem

D. All the above

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Sand requiring a high water cement ratio, belongs to

A. Zone I

B. Zone II

C. Zone III

D. Zone IV

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The rock which is not calcareous, is:

A. Lime stone

B. Chalk

C. Laterite

D. None of these

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The limits of percentage p of the longitudinal reinforcement in a column is given by

A. 0.15% to 2%

B. 0.8% to 4%

C. 0.8% to 6%

D. 0.8% to 8%

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Inert material of a cement concrete mix, is

A. Water

B. Cement

C. Aggregate

D. None of these

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Stress strain curve of high tensile steel

A. Has a definite yield point

B. Does not show definite yield point but yield point is defined by 0.1% proof stress

C. Does not show definite yield point but yield point is defined by 0.2% proof stress

D. Does not show definite yield point but yield point is defined by 2% proof stress,

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The purpose of reinforcement in pre-stressed concrete is

A. To provide adequate bond stress

B. To resist tensile stresses

C. To impart initial compressive stress in concrete

D. All of the above

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Construction joints are generally provided in concrete

A. Roads

B. Retaining walls

C. Lining of canals

D. All the above

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Pick up the incorrect statement from the following:

A. Space between the exterior walls of a warehouse and bag piles should be 30 cm

B. Cement bags should preferably be piled on wooden planks

C. Width and height of the pile should not exceed 3 m and 2.70 m respectively

D. None of these

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For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

A. 0.75 - 0.80

B. 0.80 - 0.85

C. 0.85 - 0.92

D. Above 0.92

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Pre-stress loss due to friction occurs

A. Only in post-tensioned beams

B. Only in pre-tensioned beams

C. In both post-tensioned and pre-tensioned beams

D. None of the above

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Curing of pavements, floors, roofs and slabs, is done by

A. Membrane method

B. Ponding method

C. Covering surface with bags

D. Sprinkling water method

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According to IS: 4561978, the column or the strut is the member whose effective length is greater than

A. The least lateral dimension

B. 2 times the least lateral dimension

C. 3 times the least lateral dimension

D. 4 times the least lateral dimension

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Di-calcium silicate (C₂S)

A. Hydrates rapidly

B. Generates less heat of hydration

C. Hardens rapidly

D. Provides less ultimate strength to cement

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For a good concrete

A. Aggregates should be hard and durable

B. Water should be free from organic materials

C. Cement should be sufficient to produce the required strength

D. All the above

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Which of the following R.C. retaining walls is suitable for heights beyond 6 m?

A. L-shaped wall

B. T-shaped wall

C. Counterfort type

D. All of the above

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Strength of concrete increases with

A. Increase in water-cement ratio

B. Increase in fineness of cement

C. Decrease in curing time

D. Decrease in size of aggregate

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Pick up the correct statement from the following:

A. Sand obtained from pits, is washed to remove clay and silt

B. Sand obtained from flooded pits, need not be washed before use

C. The chloride in sea shore sand and shingle may cause corrosion of reinforcement if the concrete is porous

D. All the above

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The concrete mix which causes difficulty in obtaining a smooth finish, possess

A. Segregation

B. Internal friction

C. Hardness

D. Bleeding

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If P, Y and Z are the weights of cement, fine aggregates and coarse aggregates respectively and W/C is the water cement ratio, the minimum quantity of water to be added to first batch, is obtained by the equation

A. 0.1P + 0.3Y + 0.1Z = W/C × P

B. 0.3P + 0.1Y + 0.01Z = W/C × P

C. 0.4P + 0.2Y + 0.01Z = W/C × P

D. 0.5P + 0.3Y + 0.01Z = W/C × P

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For construction of structures in sea water, the cement generally preferred to, is

A. Portland-pozzolana cement

B. Quick setting cement

C. Low heat Portland cement

D. Rapid hardening cement

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The increased cohesiveness of concrete, makes it

A. Less liable to segregation

B. More liable to segregation

C. More liable to bleeding

D. More liable for surface scaling in frosty weather

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Gypsum is added for

A. Colour

B. Strength

C. Controlling setting time

D. None of these

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Expansion joints are provided if the length of concrete structures exceeds

A. 10 m

B. 15 m

C. 15 m

D. 45 m

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The design yield stress of steel according to IS: 4561978 is: (Where f_y is the characteristic yield strength of steel)

A. 0.37 f_y

B. 0.57 f_y

C. 0.67 f_y

D. 0.87 f_y

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Concrete is unsuitable for compaction by a vibrator if it is

A. Dry

B. Earth moist

C. Semi-plastic

D. Plastic

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How long will it take for the concrete to achieve 100% of its strength?

A. 7 days

B. 14 days

C. 21 days

D. 28 days

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Workability improved by adding

A. Air-entraining agent

B. Foaming agent

C. Oily-agent

D. All the above

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Accepted Answer

D. 28 days

Specified compressive strength of concrete is obtained from cube tests at the end of

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

A beam curved in plan is designed for

To minimise the effect of differential settlement, the area of a footing should be designed for

The commercial name of white and coloured cement in India, is

Sand requiring a high water cement ratio, belongs to

The rock which is not calcareous, is:

The limits of percentage p of the longitudinal reinforcement in a column is given by

Inert material of a cement concrete mix, is

Stress strain curve of high tensile steel

The purpose of reinforcement in pre-stressed concrete is

Construction joints are generally provided in concrete

Pick up the incorrect statement from the following:

For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

Pre-stress loss due to friction occurs

Curing of pavements, floors, roofs and slabs, is done by

According to IS: 4561978, the column or the strut is the member whose effective length is greater than

Di-calcium silicate (C₂S)

For a good concrete

Which of the following R.C. retaining walls is suitable for heights beyond 6 m?

Strength of concrete increases with

Pick up the correct statement from the following:

The concrete mix which causes difficulty in obtaining a smooth finish, possess

If P, Y and Z are the weights of cement, fine aggregates and coarse aggregates respectively and W/C is the water cement ratio, the minimum quantity of water to be added to first batch, is obtained by the equation

For construction of structures in sea water, the cement generally preferred to, is

The increased cohesiveness of concrete, makes it

Gypsum is added for

Expansion joints are provided if the length of concrete structures exceeds

The design yield stress of steel according to IS: 4561978 is: (Where f_y is the characteristic yield strength of steel)

Concrete is unsuitable for compaction by a vibrator if it is

How long will it take for the concrete to achieve 100% of its strength?

Workability improved by adding

Also checkout

Specified compressive strength of concrete is obtained from cube tests at the end of

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

A beam curved in plan is designed for

To minimise the effect of differential settlement, the area of a footing should be designed for

The commercial name of white and coloured cement in India, is

Sand requiring a high water cement ratio, belongs to

The rock which is not calcareous, is:

The limits of percentage p of the longitudinal reinforcement in a column is given by

Inert material of a cement concrete mix, is

Stress strain curve of high tensile steel

The purpose of reinforcement in pre-stressed concrete is

Construction joints are generally provided in concrete

Pick up the incorrect statement from the following:

For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

Pre-stress loss due to friction occurs

Curing of pavements, floors, roofs and slabs, is done by

According to IS: 4561978, the column or the strut is the member whose effective length is greater than

Di-calcium silicate (C2S)

For a good concrete

Which of the following R.C. retaining walls is suitable for heights beyond 6 m?

Strength of concrete increases with

Pick up the correct statement from the following:

The concrete mix which causes difficulty in obtaining a smooth finish, possess

If P, Y and Z are the weights of cement, fine aggregates and coarse aggregates respectively and W/C is the water cement ratio, the minimum quantity of water to be added to first batch, is obtained by the equation

For construction of structures in sea water, the cement generally preferred to, is

The increased cohesiveness of concrete, makes it

Gypsum is added for

Expansion joints are provided if the length of concrete structures exceeds

The design yield stress of steel according to IS: 4561978 is: (Where fy is the characteristic yield strength of steel)

Concrete is unsuitable for compaction by a vibrator if it is

How long will it take for the concrete to achieve 100% of its strength?

Workability improved by adding

Also checkout

Di-calcium silicate (C₂S)

The design yield stress of steel according to IS: 4561978 is: (Where f_y is the characteristic yield strength of steel)