The factor which affects workability, is

Question

The factor which affects workability, is

A. Water content and its temperature

B. Shape and size of the aggregates

C. Air entraining agents

D. All the above

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The percentage of voids in cement is approximately

A. 25 %

B. 40 %

C. 60 %

D. 80 %

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For the construction of cement concrete floor, the maximum permissible size of aggregate, is

A. 4 mm

B. 6 mm

C. 8 mm

D. 10 mm

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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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If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than

A. 20.5 mm

B. 30.5 mm

C. 40.5 mm

D. 50.5 mm

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According to IS: 4561978, the maximum reinforcement in a column is

A. 2 %

B. 4 %

C. 6 %

D. 8 %

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Batching error means inaccuracy in the quantity of

A. Aggregates

B. Cement

C. Water

D. All the above

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According to I.S. : 456, the number of grades of concrete mixes, is

A. 3

B. 4

C. 5

D. 7

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Pick up the incorrect statement from the following:

A. Admixtures accelerate hydration

B. Admixtures make concrete water proof

C. Admixtures make concrete acid proof

D. Admixtures give high strength

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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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Air entrainment in the concrete increases

A. Workability

B. Strength

C. The effects of temperature variations

D. The unit weight

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Maximum percentage reinforcement in case of slabs is limited to

A. 2

B. 4

C. 6

D. 8

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Allowable shear strength of concrete, depends upon

A. Shear strength

B. Tensile strength

C. Compressive strength

D. None of these

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The main object of compaction of concrete, is:

A. To eliminate air holes

B. To achieve maximum density

C. To provide intimate contact between the concrete and embedded materials

D. All the above

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Pick up the incorrect statement from the following:

A. Tricalcium silicate (C3S) hydrates rapidly

B. Tricalcium silicate (C3S) generates more heat of hydration

C. Tricalcium silicate (C3S) develops early strength

D. Tricalcium silicate (C3S) has more resistance to sulphate attack

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The approximate value of the ratio between direct tensile strength and flexural strength is

A. 0.33

B. 0.5

C. 0.75

D. 1.0

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For road pavements, the cement generally used, is

A. Ordinary Portland cement

B. Rapid hardening cement

C. Low heat cement

D. Blast furnace slag cement

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The relation between modulus of rupture f_cr, splitting strength f_cs and direct tensile strength f_cl is given by

A. f_cr - f_cs = f_cl

B. f_cr > f_cs > f_cl

C. f_cr < f_cs < f_cl

D. f_cs > f_cr > f_cl

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As compared to ordinary Portland cement, use of pozzolana cement

A. Reduces workability

B. Increases bleeding

C. Increases shrinkage

D. Increases strength

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Workability of concrete is measured by

A. Vicat apparatus test

B. Slump test

C. Minimum void method

D. Talbot Richard test

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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. Lime in excess, causes the cement to expand and disintegrate

B. Silica in excess, causes the cement to set slowly

C. Alumina in excess, reduces the strength of the cement

D. All the above

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An aggregate is said to be flaky if its least dimension is less than

A. 1/5th of mean dimension

B. 2/5th of mean dimension

C. 3/5th of mean dimension

D. 4/5th of mean dimension

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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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The fineness modulus of fine aggregate is in the range of

A. 2.0 to 3.5

B. 3.5 to 5.0

C. 5.0 to 7.0

D. 6.0 to 8.5

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Slump test of concrete is a measure of its

A. Consistency

B. Compressive strength

C. Tensile strength

D. Impact value

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According to Water-Cement Ratio Law, the strength of workable plastic concrete

A. Depends upon the amount of water used in the mix

B. Does not depend upon the quality of cement mixed with aggregates

C. Does not depend upon the quantity of cement mixed with aggregates

D. All the above

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The main reinforcement in the toe of a T-shaped R C. retaining wall is provided on
(i) Top face parallel to the wall
(ii) Top face perpendicular to the wall
(iii) Bottom face parallel to the wall
(iv) Bottom face perpendicular to the wall The correct answer is

A. Only (ii) is correct

B. (i) and (ii) are correct

C. (iii) and (iv) are correct

D. Only (iv) is correct

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In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top face near centre of span The correct answer is

A. Only (i)

B. Only (ii)

C. Both (i) and (iv)

D. Both (ii) and (iii)

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Pick up the correct statement from the following:

A. Construction joints are necessarily planned for their locations

B. Expansion joints are provided to accommodate thermal expansion

C. Construction joints are provided to control shrinkage cracks

D. All the above

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The specifications of a cement bag for storage, are

A. Weight 50 kg

B. Height 18 cm

C. Plan area 3000 sq. cm

D. All the above

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Accepted Answer

D. All the above

The factor which affects workability, is

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

The percentage of voids in cement is approximately

For the construction of cement concrete floor, the maximum permissible size of aggregate, is

Water cement ratio is

If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than

According to IS: 4561978, the maximum reinforcement in a column is

Batching error means inaccuracy in the quantity of

According to I.S. : 456, the number of grades of concrete mixes, is

Pick up the incorrect statement from the following:

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

Air entrainment in the concrete increases

Maximum percentage reinforcement in case of slabs is limited to

Allowable shear strength of concrete, depends upon

The main object of compaction of concrete, is:

Pick up the incorrect statement from the following:

The approximate value of the ratio between direct tensile strength and flexural strength is

For road pavements, the cement generally used, is

The relation between modulus of rupture f_cr, splitting strength f_cs and direct tensile strength f_cl is given by

As compared to ordinary Portland cement, use of pozzolana cement

Workability of concrete is measured by

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:

An aggregate is said to be flaky if its least dimension is less than

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

The fineness modulus of fine aggregate is in the range of

Slump test of concrete is a measure of its

According to Water-Cement Ratio Law, the strength of workable plastic concrete

The main reinforcement in the toe of a T-shaped R C. retaining wall is provided on
(i) Top face parallel to the wall
(ii) Top face perpendicular to the wall
(iii) Bottom face parallel to the wall
(iv) Bottom face perpendicular to the wall The correct answer is

In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top face near centre of span The correct answer is

Pick up the correct statement from the following:

The specifications of a cement bag for storage, are

Also checkout

The factor which affects workability, is

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

The percentage of voids in cement is approximately

For the construction of cement concrete floor, the maximum permissible size of aggregate, is

Water cement ratio is

If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than

According to IS: 4561978, the maximum reinforcement in a column is

Batching error means inaccuracy in the quantity of

According to I.S. : 456, the number of grades of concrete mixes, is

Pick up the incorrect statement from the following:

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

Air entrainment in the concrete increases

Maximum percentage reinforcement in case of slabs is limited to

Allowable shear strength of concrete, depends upon

The main object of compaction of concrete, is:

Pick up the incorrect statement from the following:

The approximate value of the ratio between direct tensile strength and flexural strength is

For road pavements, the cement generally used, is

The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by

As compared to ordinary Portland cement, use of pozzolana cement

Workability of concrete is measured by

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:

An aggregate is said to be flaky if its least dimension is less than

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

The fineness modulus of fine aggregate is in the range of

Slump test of concrete is a measure of its

According to Water-Cement Ratio Law, the strength of workable plastic concrete

The main reinforcement in the toe of a T-shaped R C. retaining wall is provided on (i) Top face parallel to the wall (ii) Top face perpendicular to the wall (iii) Bottom face parallel to the wall (iv) Bottom face perpendicular to the wall The correct answer is

In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top face near centre of span The correct answer is

Pick up the correct statement from the following:

The specifications of a cement bag for storage, are

Also checkout

The relation between modulus of rupture f_cr, splitting strength f_cs and direct tensile strength f_cl is given by

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

The main reinforcement in the toe of a T-shaped R C. retaining wall is provided on
(i) Top face parallel to the wall
(ii) Top face perpendicular to the wall
(iii) Bottom face parallel to the wall
(iv) Bottom face perpendicular to the wall The correct answer is