If a grading curve is horizontal between the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve, the graded aggregates do not contain

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If a grading curve is horizontal between the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve, the graded aggregates do not contain

A. 20 mm particles

B. 10 mm particles

C. 4.75 mm particles

D. All the above

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Ultimate strength of cold drawn high steel wires

A. Increases with increase in diameter of bar

B. Decreases with increase in diameter of bar

C. Does not depend on diameter of bar

D. None of the above

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The bulk density of aggregates, is generally expressed as

A. Tonnes/cubic metre

B. kg/cubic metre

C. kg/litre

D. g/cm3

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In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

A. Zero

B. Tensile

C. Compressive

D. Tensile or compressive

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The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called

A. Segregation

B. Bleeding

C. Bulking

D. Creep

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If a grading curve is horizontal between the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve, the graded aggregates do not contain

A. 20 mm particles

B. 10 mm particles

C. 4.75 mm particles

D. All the above

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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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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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Pick up the correct statement from the following:

A. Insufficient quantity of water makes the concrete mix harsh

B. Insufficient quantity of water makes the concrete unworkable

C. Excess quantity of water makes the concrete segregated

D. All the above

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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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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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Cube strength of controlled concrete to be used for pre-tensioned and post-tensioned work respectively should not be less than

A. 35 MPa and 42 MPa

B. 42 MPa and 35 MPa

C. 42 MPa and 53 MPa

D. 53 MPa and 42 MPa

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Sands of zone I are:

A. Course

B. Medium

C. Medium to fine

D. Fine

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

A. Granite

B. Magnetite

C. Barite

D. Volcanic scoria

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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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Pick up the correct proportions of chemical ingredients of cement

A. Lime : Silica : Alumina : Iron oxide : 63 : 22 : 6 : 3

B. Silica : Lime : Alumina : Iron oxide : 63 : 22 : 6 : 3

C. Alumina : Silica : Lime : Iron oxide : 63 : 22 : 6 : 3

D. Iron oxide : Alumina : Silica : Lime : 63 : 22 : 6 : 3

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In a counterfort retaining wall, the main reinforcement is provided on the (i) Bottom face in front counterfort (ii) Inclined face in front counterfort (iii) Bottom face in back counterfort (iv) Inclined face in back counterfort The correct answer is

A. (i) and (ii),

B. (ii) and (iii)

C. (i) and (iv)

D. (iii) and (iv)

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The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as

A. Low-heat Portland cement

B. Rapid hardening Portland cement

C. Portland blast slag cement

D. Portland pozzolana cement

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If a beam fails in bond, then its bond strength can be increased most economically by

A. Increasing the depth of beam

B. Using thinner bars but more in number

C. Using thicker bars but less in number

D. Providing vertical stirrups

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If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is

A. P = [(Z - X)/(Z - Y)] × 100

B. P = [(X - Z)/(Z - Y)] × 100

C. P = [(X - Z)/(Z + Y)] × 100

D. P = [(Z + X)/(Z - Y)] × 100

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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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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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M10 grade of concrete approximates

A. 1 : 3 : 6 mix

B. 1 : 1 : 2 mix

C. 1 : 2 : 4 mix

D. 1 : 1.5 : 3 mix

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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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The aggregate impact value of the aggregate used in

A. Building concrete is less than 45

B. Road pavement concrete is less than 30

C. Runway concrete is less than 30

D. All the above

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According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is

A. 0.43 d

B. 0.55 d

C. 0.68 d

D. 0.85 d

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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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For quality control of Portland cement, the test essentially done is

A. Setting time

B. Tensile strength

C. Consistency

D. All the above

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The load carrying capacity of a helically reinforced column as compared to that of a tied column is about

A. 5 % less

B. 10 % less

C. 5 % more

D. 10 % more

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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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Accepted Answer

D. All the above

If a grading curve is horizontal between the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve, the graded aggregates do not contain

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Ultimate strength of cold drawn high steel wires

The bulk density of aggregates, is generally expressed as

In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called

If a grading curve is horizontal between the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve, the graded aggregates do not contain

Inert material of a cement concrete mix, is

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

Pick up the correct statement from the following:

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

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

Cube strength of controlled concrete to be used for pre-tensioned and post-tensioned work respectively should not be less than

Sands of zone I are:

Permissible compressive strength of M 200 concrete grade is

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

An ideal ware house, is provided

Pick up the correct proportions of chemical ingredients of cement

In a counterfort retaining wall, the main reinforcement is provided on the (i) Bottom face in front counterfort (ii) Inclined face in front counterfort (iii) Bottom face in back counterfort (iv) Inclined face in back counterfort The correct answer is

The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as

If a beam fails in bond, then its bond strength can be increased most economically by

If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is

Le-Chatelier's apparatus is used for testing

Proper proportioning of concrete, ensures

M10 grade of concrete approximates

Maximum percentage reinforcement in case of slabs is limited to

The aggregate impact value of the aggregate used in

According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is

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

For quality control of Portland cement, the test essentially done is

The load carrying capacity of a helically reinforced column as compared to that of a tied column is about

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

Also checkout

If a grading curve is horizontal between the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve, the graded aggregates do not contain

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Ultimate strength of cold drawn high steel wires

The bulk density of aggregates, is generally expressed as

In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called

If a grading curve is horizontal between the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve, the graded aggregates do not contain

Inert material of a cement concrete mix, is

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

Pick up the correct statement from the following:

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

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

Cube strength of controlled concrete to be used for pre-tensioned and post-tensioned work respectively should not be less than

Sands of zone I are:

Permissible compressive strength of M 200 concrete grade is

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

An ideal ware house, is provided

Pick up the correct proportions of chemical ingredients of cement

In a counterfort retaining wall, the main reinforcement is provided on the (i) Bottom face in front counterfort (ii) Inclined face in front counterfort (iii) Bottom face in back counterfort (iv) Inclined face in back counterfort The correct answer is

The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as

If a beam fails in bond, then its bond strength can be increased most economically by

If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is

Le-Chatelier's apparatus is used for testing

Proper proportioning of concrete, ensures

M10 grade of concrete approximates

Maximum percentage reinforcement in case of slabs is limited to

The aggregate impact value of the aggregate used in

According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is

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

For quality control of Portland cement, the test essentially done is

The load carrying capacity of a helically reinforced column as compared to that of a tied column is about

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

Also checkout

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