Le-Chatelier's apparatus is used for testing

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Le-Chatelier's apparatus is used for testing

A. Soundness of cement

B. Hardness of cement

C. Strength of cement

D. Durability of cement

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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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For concreting tunnel linings, transportation of concrete is done by

A. Pans

B. Wheel borrows

C. Containers

D. Pumps

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Pick up the correct statement from the following:

A. According to the petrological characteristics, concrete aggregates are classified as heavy weight, normal weight and light weight

B. According to the shape of the particles, concrete aggregates are classified as rounded irregular, angular and flaky

C. According to the surface texture of the particles, the concrete aggregates are classified as glassy, smooth, granular, rough, crystalline, honey combed and porous

D. All the above

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An ideal ware house, is provided

A. Water proof masonry walls

B. Water proof roof

C. Few windows which remain generally closed

D. All the above

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Select the correct statement

A. Elastic modulus of high tensile steel is nearly the same as that of mild steel

B. Elastic modulus of high tensile steel is more than that of mild steel

C. Carbon percentage in high carbon steel is less than that in mild steel

D. High tensile steel is cheaper than mild steel

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The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

A. 0.367 x_u

B. 0.416 x_u

C. 0.446 x_u

D. 0.573 x_u

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To obtain a very high strength concrete, use very fine grained

A. Granite

B. Magnetite

C. Barite

D. Volcanic scoria

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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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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 grade of concrete M 150 means that compressive strength of a 15 cm cube after 28 days, is

A. 100 kg/cm2

B. 150 kg/cm2

C. 200 kg/cm2

D. 250 kg/cm2

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Particles of 0.002 mm size are that of

A. Clay

B. Sand

C. Gravel

D. None of these

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1% of voids in a concrete mix would reduce its strength by about

A. 5 %

B. 10 %

C. 15 %

D. 20 %

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Select the incorrect statement

A. Lean mixes bleed more as compared to rich ones.

B. Bleeding can be minimized by adding pozzolana finer aggregate

C. Bleeding can be increased by addition 'of calcium chloride

D. None of the above

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The depth of footing for an isolated column is governed by (i) Maximum bending moment (ii) Shear force (iii) Punching shear The correct answer is

A. Only (i)

B. (i) and (ii)

C. (i) and (iii)

D. All (i), (ii) and (iii)

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Permissible compressive strength of M 200 concrete grade is

A. 100 kg/cm²

B. 150 kg/cm²

C. 200 kg/cm²

D. 250 kg/cm²

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Separation of coarse aggregates from mortar during transportation, is known

A. Bleeding

B. Creeping

C. Segregation

D. Shrinkage

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The ratio of the length to breadth of a wooden float, is

A. 4.5

B. 5.5

C. 6.5

D. 7.5

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Approximate value of shrinkage strain in concrete, is

A. 0.003

B. 0.0003

C. 0.00003

D. 0.03

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Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is

A. 28 liters

B. 30 liters

C. 32 liters

D. 34 liters

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The ratio of the diameter of reinforcing bars and the slab thickness is

A. 1/4

B. 1/5

C. 1/6

D. 1/8

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According to IS : 382-1963, a good aggregate should be

A. Chemically inert

B. Sufficiently strong

C. Hard and durable

D. All the above

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Water cement ratio is

A. Volume of water to that of cement

B. Weight of water to that of cement

C. Weight of concrete to that of water

D. Both (a) and (b) of the above

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The average permissible stress in bond for plain bars in tension is

A. Increased by 10% for bars in compression

B. Increased by 25% for bars in compression

C. Decreased by 10% for bars in compression

D. Decreased by 25% for bars in compression

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W_p and W_f are the weights of a cylinder containing partially compacted and fully compacted concrete. If the compaction factor (W_p/W_f) is 0.95, the workability of concrete is

A. Extremely low

B. Very low

C. Low

D. High

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Pick up the correct statement from the following:

A. Sand stones may be divided into calcareous, siliceous and ferruginous sand stones

B. Concrete using sand stones, cracks due to excessive shrinkage

C. Broken bricks produce a concrete having good fire resisting qualities

D. All the above

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Efflorescence in cement is caused due to an excess of

A. Alumina

B. Iron oxide

C. Silica

D. Alkalis

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The maximum value of hoop compression in a dome is given by

A. wR / 4d

B. wR/2d

C. wR/d

D. 2wR/d Where, w = load per unit area of surface of dome R = radius of curvature d = thickness of dome

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Critical section for shear in case of flat slabs is at a distance of

A. Effective depth of slab from periphery of column/drop panel

B. d/2 from periphery of column/capital/ drop panel

C. At the drop panel of slab

D. At the periphery of column

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Water required per bag of cement, is

A. 7 kg

B. 14 kg

C. 21 kg

D. 35 kg

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Increase in the moisture content in concrete

A. Reduces the strength

B. Increases the strength

C. Does not change the strength

D. All of the above

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Accepted Answer

A. Soundness of cement

Le-Chatelier's apparatus is used for testing

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Concrete is unsuitable for compaction by a vibrator if it is

For concreting tunnel linings, transportation of concrete is done by

Pick up the correct statement from the following:

An ideal ware house, is provided

Select the correct statement

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

To obtain a very high strength concrete, use very fine grained

The rock which is not calcareous, is:

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

The grade of concrete M 150 means that compressive strength of a 15 cm cube after 28 days, is

Particles of 0.002 mm size are that of

1% of voids in a concrete mix would reduce its strength by about

Select the incorrect statement

The depth of footing for an isolated column is governed by (i) Maximum bending moment (ii) Shear force (iii) Punching shear The correct answer is

Permissible compressive strength of M 200 concrete grade is

Separation of coarse aggregates from mortar during transportation, is known

The ratio of the length to breadth of a wooden float, is

Approximate value of shrinkage strain in concrete, is

Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is

The ratio of the diameter of reinforcing bars and the slab thickness is

According to IS : 382-1963, a good aggregate should be

Water cement ratio is

The average permissible stress in bond for plain bars in tension is

W_p and W_f are the weights of a cylinder containing partially compacted and fully compacted concrete. If the compaction factor (W_p/W_f) is 0.95, the workability of concrete is

Pick up the correct statement from the following:

Efflorescence in cement is caused due to an excess of

The maximum value of hoop compression in a dome is given by

Critical section for shear in case of flat slabs is at a distance of

Water required per bag of cement, is

Increase in the moisture content in concrete

Also checkout

Le-Chatelier's apparatus is used for testing

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Concrete is unsuitable for compaction by a vibrator if it is

For concreting tunnel linings, transportation of concrete is done by

Pick up the correct statement from the following:

An ideal ware house, is provided

Select the correct statement

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where xu is the depth of neutral axis at the limit state of collapse)

To obtain a very high strength concrete, use very fine grained

The rock which is not calcareous, is:

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

The grade of concrete M 150 means that compressive strength of a 15 cm cube after 28 days, is

Particles of 0.002 mm size are that of

1% of voids in a concrete mix would reduce its strength by about

Select the incorrect statement

The depth of footing for an isolated column is governed by (i) Maximum bending moment (ii) Shear force (iii) Punching shear The correct answer is

Permissible compressive strength of M 200 concrete grade is

Separation of coarse aggregates from mortar during transportation, is known

The ratio of the length to breadth of a wooden float, is

Approximate value of shrinkage strain in concrete, is

Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is

The ratio of the diameter of reinforcing bars and the slab thickness is

According to IS : 382-1963, a good aggregate should be

Water cement ratio is

The average permissible stress in bond for plain bars in tension is

Wp and Wf are the weights of a cylinder containing partially compacted and fully compacted concrete. If the compaction factor (Wp/Wf) is 0.95, the workability of concrete is

Pick up the correct statement from the following:

Efflorescence in cement is caused due to an excess of

The maximum value of hoop compression in a dome is given by

Critical section for shear in case of flat slabs is at a distance of

Water required per bag of cement, is

Increase in the moisture content in concrete

Also checkout

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

W_p and W_f are the weights of a cylinder containing partially compacted and fully compacted concrete. If the compaction factor (W_p/W_f) is 0.95, the workability of concrete is