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

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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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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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An aggregate is known as cyclopean aggregate if its size is more than

A. 4.75 mm

B. 30 mm

C. 60 mm

D. 75 mm

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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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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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Workability of concrete for a given water content is good if the aggregates, are

A. Rounded aggregate

B. Irregular aggregate

C. Angular aggregate

D. Flaky aggregates

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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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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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For concreting tunnel linings, transportation of concrete is done by

A. Pans

B. Wheel borrows

C. Containers

D. Pumps

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Which of the following has high tensile strength?

A. Plain hot rolled wires

B. Cold drawn wires

C. Heat treated rolled wires

D. All have same tensile strength

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The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is

A. Not needed

B. Provided equally on inner and front faces

C. Provided more on inner face than on front face

D. Provided more on front face than on inner face

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On a grading curve, the gap grading is represented by

A. A horizontal line

B. A vertical line

C. N.W. inclined line

D. N.E. inclined line

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The grade of concrete not recommended by I.S. : 456, is

A. M 100

B. M 200

C. M 300

D. M 500

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The percentage of the aggregate of F.M. 2.6 to be combined with coarse aggregate of F.M. 6.8 for obtaining the aggregates of F.M. 5.4, is

A. 30 %

B. 40 %

C. 50 %

D. 60 %

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Pick up the correct statement from the following:

A. Bulking of sand is caused due to formation of a thin film of surface moisture

B. Fine sand bulks more than coarse sand

C. The volume of fully saturated sand, is equal to the volume of dry and loose sand

D. All the above

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The commonly used material in the manufacture of cement is

A. Sand stone

B. Slate

C. Lime stone

D. Graphite

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The critical section for finding maximum bending moment for footing under masonry wall is located

A. At the middle of the wall

B. At the edge of the wall

C. Halfway between the middle and edge of the wall

D. At a distance equal to effective depth of footing from the edge of the wall

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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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Pick up the correct statement from the following:

A. A highly absorptive aggregate reduces the workability of concrete considerably

B. The specific gravity of aggregate is important for the determination of the moisture content

C. The absorption and porosity of an aggregate influence the property of the concrete

D. All the above

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Strength of concrete with passage of time

A. Increases

B. Decreases

C. Fluctuates

D. Remains constant

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Proper proportioning of concrete, ensures

A. Desired strength and workability

B. Desired durability

C. Water tightness of the structure

D. All the above

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The effect of adding calcium chloride in concrete is (i) To increase shrinkage (ii) To decrease shrinkage (iii) To increase setting time (iv) To decrease setting time The correct answer is

A. (i) and (iii)

B. (i) and (iv)

C. (ii) and (iii)

D. (ii) and (iv)

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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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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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Pick up the incorrect statement from the following:

A. The bottom and top ends of slump mould are parallel to each other

B. The axis of the mould is perpendicular to the end faces

C. The internal surface of the mould is kept clean and free from set cement

D. The mould is in the form of a frustum of hexagonal pyramid

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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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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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Slump test is done for

A. Clay

B. Sand

C. Lime

D. Concrete

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Finer grinding of cement

A. Affects only the early development of strength

B. Affects only the ultimate strength

C. Both (A) and (B)

D. Does not affect the strength

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If fineness modulus of sand is 2.5, it is graded as

A. Very fine sand

B. Fine sand

C. Medium sand

D. Coarse sand

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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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Accepted Answer

C. 0.8% to 6%

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

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

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

An aggregate is known as cyclopean aggregate if its size is more than

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 average permissible stress in bond for plain bars in tension is

Workability of concrete for a given water content is good if the aggregates, are

Workability improved by adding

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

For concreting tunnel linings, transportation of concrete is done by

Which of the following has high tensile strength?

The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is

On a grading curve, the gap grading is represented by

The grade of concrete not recommended by I.S. : 456, is

The percentage of the aggregate of F.M. 2.6 to be combined with coarse aggregate of F.M. 6.8 for obtaining the aggregates of F.M. 5.4, is

Pick up the correct statement from the following:

The commonly used material in the manufacture of cement is

The critical section for finding maximum bending moment for footing under masonry wall is located

For road pavements, the cement generally used, is

Pick up the correct statement from the following:

Strength of concrete with passage of time

Proper proportioning of concrete, ensures

The effect of adding calcium chloride in concrete is (i) To increase shrinkage (ii) To decrease shrinkage (iii) To increase setting time (iv) To decrease setting time The correct answer 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

Di-calcium silicate (C₂S)

Pick up the incorrect statement from the following:

Slump test of concrete is a measure of its

Pick up the correct statement from the following:

Slump test is done for

Finer grinding of cement

If fineness modulus of sand is 2.5, it is graded as

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

Also checkout

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

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

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

An aggregate is known as cyclopean aggregate if its size is more than

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

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

Workability of concrete for a given water content is good if the aggregates, are

Workability improved by adding

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

For concreting tunnel linings, transportation of concrete is done by

Which of the following has high tensile strength?

The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is

On a grading curve, the gap grading is represented by

The grade of concrete not recommended by I.S. : 456, is

The percentage of the aggregate of F.M. 2.6 to be combined with coarse aggregate of F.M. 6.8 for obtaining the aggregates of F.M. 5.4, is

Pick up the correct statement from the following:

The commonly used material in the manufacture of cement is

The critical section for finding maximum bending moment for footing under masonry wall is located

For road pavements, the cement generally used, is

Pick up the correct statement from the following:

Strength of concrete with passage of time

Proper proportioning of concrete, ensures

The effect of adding calcium chloride in concrete is (i) To increase shrinkage (ii) To decrease shrinkage (iii) To increase setting time (iv) To decrease setting time The correct answer 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

Di-calcium silicate (C2S)

Pick up the incorrect statement from the following:

Slump test of concrete is a measure of its

Pick up the correct statement from the following:

Slump test is done for

Finer grinding of cement

If fineness modulus of sand is 2.5, it is graded as

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

Also checkout

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

Di-calcium silicate (C₂S)