For a good concrete

Question

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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To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between

A. 1100° and 1200°C

B. 1200° and 1300°C

C. 1300° and 1400°C

D. 1400° and 1500°C

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The maximum percentage of chemical ingredient of cement is that of

A. Magnesium oxide

B. Iron oxide

C. Silica

D. Lime

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The shrinkage of concrete

A. Is proportional to water content is the mix

B. Is proportional to cement concrete

C. Increases with age of concrete

D. All the above

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If the size of panel in a flat slab is 6 m × 6 m, then as per Indian Standard Code, the widths of column strip and middle strip are

A. 3.0 m and 1.5 m

B. 1.5 m and 3.0 m

C. 3.0 m and 3.0 m

D. 1.5 m and 1.5 m

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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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Most common method of pre-stressing used for factory production is

A. Long line method

B. Freyssinet system

C. Magnel-Blaton system

D. Lee-Macall system

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The process of hardening the concrete by keeping its surface moist is known

A. Placing

B. Wetting

C. Curing

D. Compacting

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Pick up the correct statement from the following:

A. Segregation is necessary for a workable concrete

B. Consistency does not affect the workability of concrete

C. If the concrete mix is dry, the slump is maximum

D. None of these

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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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Water required per bag of cement, is

A. 7 kg

B. 14 kg

C. 21 kg

D. 35 kg

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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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C.R.R.I. charts are used to obtain a relationship between strength of concrete and

A. Water cement ratio

B. Workability

C. Grading of aggregate

D. Fineness modulus

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Horizontal construction joints in concrete walls are generally provided at

A. Soffit level

B. Window sill level

C. Floor level

D. All the above

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In the method of voids for determination of the quantity of cement paste, it is assumed that

A. Voids in coarse aggregates are filled by fine aggregates

B. Voids in fine aggregates are filled by the cement paste

C. Volume of fine aggregates is equal to total voids in coarse aggregates plus 10% extra

D. All the above

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The internal dimensions of a ware house are 15 m × 5.6 m, and the maximum height of piles is 2.70 m, the maximum number of bags to be stored in two piles, are

A. 1500 bags

B. 2000 bags

C. 2500 bags

D. 3000 bags

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For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine's theory

A. Is always less than 1

B. Is always greater than 1

C. Can be more than 1

D. Can be less than 1

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Concrete containing

A. Siliceous aggregates, has higher co-efficient of expansion

B. Igneous aggregates, has intermediate coefficient of expansion

C. Lime stones, has lowest co-efficient of expansion

D. All the above

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The minimum percentage of chemical ingredient of cement is that of

A. Magnesium oxide

B. Iron oxide

C. Alumina

D. Lime

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The strength and quality of concrete, depend upon:

A. Grading of aggregates

B. Surface area of aggregates

C. Shape of aggregates

D. All the above

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For an ordinary Portland cement

A. Residual does not exceed 10% when sieved through IS Sieve No. 9

B. Soundness varies from 5 to 10 mm

C. Initial setting time is not less than 30 minutes

D. Compressive stress after 7 days, is not less than 175 kg/cm²

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Pick up the correct statement from the following:

A. Calcium chloride acts as a retarder

B. Calcium chloride acts as an accelerator

C. Gypsum (calcium sulphate) acts as a retarder

D. Both (b) and (c)

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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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The diameter of the Vicat plunger is 10 mm and its length varies from

A. 20 mm to 30 mm

B. 30 mm to 40 mm

C. 40 mm to 50 mm

D. 50 mm to 60 mm

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For compacting plain concrete road surface of thickness less than 20 cm, we use

A. Internal vibrator

B. Screed vibrator

C. Form vibrator

D. None of these

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Gypsum is added for

A. Colour

B. Strength

C. Controlling setting time

D. None of these

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The size of fine aggregates does not exceed

A. 2.75 mm

B. 3.00 mm

C. 3.75 mm

D. 4.75 mm

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The percentage of voids in cement is approximately

A. 25 %

B. 40 %

C. 60 %

D. 80 %

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I.S. Sieve Nos. 10 mm and 4.75 mm are generally used for grading of

A. Coarse aggregates

B. Fine aggregates

C. Neither (a) nor (b)

D. Both (a) and (b)

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Shrinkage of concrete depends upon
(i) Humidity of atmosphere
(ii) Passage of time
(iii) Stress The correct answer is

A. (i) and (ii)

B. (ii) and (iii)

C. Only (iii)

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

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Sand generally contains salt if it is obtained from:

A. Nala beds

B. River beds

C. Sea beds

D. None of these

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Accepted Answer

D. All the above

For a good concrete

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between

The maximum percentage of chemical ingredient of cement is that of

The shrinkage of concrete

If the size of panel in a flat slab is 6 m × 6 m, then as per Indian Standard Code, the widths of column strip and middle strip are

Inert material of a cement concrete mix, is

Most common method of pre-stressing used for factory production is

The process of hardening the concrete by keeping its surface moist is known

Pick up the correct statement from the following:

Separation of coarse aggregates from mortar during transportation, is known

Water required per bag of cement, is

Construction joints are generally provided in concrete

C.R.R.I. charts are used to obtain a relationship between strength of concrete and

Horizontal construction joints in concrete walls are generally provided at

In the method of voids for determination of the quantity of cement paste, it is assumed that

The internal dimensions of a ware house are 15 m × 5.6 m, and the maximum height of piles is 2.70 m, the maximum number of bags to be stored in two piles, are

For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine's theory

Concrete containing

The minimum percentage of chemical ingredient of cement is that of

The strength and quality of concrete, depend upon:

For an ordinary Portland cement

Pick up the correct statement from the following:

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)

The diameter of the Vicat plunger is 10 mm and its length varies from

For compacting plain concrete road surface of thickness less than 20 cm, we use

Gypsum is added for

The size of fine aggregates does not exceed

The percentage of voids in cement is approximately

I.S. Sieve Nos. 10 mm and 4.75 mm are generally used for grading of

Shrinkage of concrete depends upon
(i) Humidity of atmosphere
(ii) Passage of time
(iii) Stress The correct answer is

Sand generally contains salt if it is obtained from:

Also checkout

For a good concrete

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between

The maximum percentage of chemical ingredient of cement is that of

The shrinkage of concrete

If the size of panel in a flat slab is 6 m × 6 m, then as per Indian Standard Code, the widths of column strip and middle strip are

Inert material of a cement concrete mix, is

Most common method of pre-stressing used for factory production is

The process of hardening the concrete by keeping its surface moist is known

Pick up the correct statement from the following:

Separation of coarse aggregates from mortar during transportation, is known

Water required per bag of cement, is

Construction joints are generally provided in concrete

C.R.R.I. charts are used to obtain a relationship between strength of concrete and

Horizontal construction joints in concrete walls are generally provided at

In the method of voids for determination of the quantity of cement paste, it is assumed that

The internal dimensions of a ware house are 15 m × 5.6 m, and the maximum height of piles is 2.70 m, the maximum number of bags to be stored in two piles, are

For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine's theory

Concrete containing

The minimum percentage of chemical ingredient of cement is that of

The strength and quality of concrete, depend upon:

For an ordinary Portland cement

Pick up the correct statement from the following:

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)

The diameter of the Vicat plunger is 10 mm and its length varies from

For compacting plain concrete road surface of thickness less than 20 cm, we use

Gypsum is added for

The size of fine aggregates does not exceed

The percentage of voids in cement is approximately

I.S. Sieve Nos. 10 mm and 4.75 mm are generally used for grading of

Shrinkage of concrete depends upon (i) Humidity of atmosphere (ii) Passage of time (iii) Stress The correct answer is

Sand generally contains salt if it is obtained from:

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)

Shrinkage of concrete depends upon
(i) Humidity of atmosphere
(ii) Passage of time
(iii) Stress The correct answer is