Addition of pozzolana to cement

Question

Addition of pozzolana to cement

A. Decreases workability

B. Increases strength

C. Increases heat of hydration

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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To hydrate 500kg of cement full water needed, is

A. 100 kg

B. 110 kg

C. 120 kg

D. 130 kg

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As compared to ordinary Portland cement, high alumina cement has

A. Higher initial setting time but lower final setting time

B. Lower initial setting time but higher final setting time

C. Higher initial and final setting times

D. Lower initial and final setting times

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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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If the average compressive strength is 4000 kg/cm2 and standard deviation is 500, the co-efficient of variation is

A. 10 %

B. 12.5 %

C. 15 %

D. 18.5 %

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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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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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The increased cohesiveness of concrete, makes it

A. Less liable to segregation

B. More liable to segregation

C. More liable to bleeding

D. More liable for surface scaling in frosty weather

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The risk of segregation is more for

A. Wetter mix

B. Larger proportion of maximum size aggregate

C. Coarser grading

D. All the above

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Bulking of sand is maximum if moisture content is about

A. 2 %

B. 4 %

C. 6 %

D. 10 %

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A construction joint is provided where

A. Bending moment is small

B. Shear force is small

C. The member is supported by other member

D. All the above

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For a cantilever of effective depth of 0.5 m, the maximum span to satisfy vertical deflection limit is

A. 3.5 m

B. 4 m

C. 4.5 m

D. 5 m

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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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Transport of concrete by pumps, is done for a distance of

A. 100 m

B. 200 m

C. 300 m

D. 400 m

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Strength of concrete increases with

A. Increase in water-cement ratio

B. Increase in fineness of cement

C. Decrease in curing time

D. Decrease in size of aggregate

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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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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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Concrete mainly consists of

A. Cement

B. Aggregates

C. Water

D. All the above

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Cement used for normal concrete construction, is obtained by burning a mixture of

A. Siliceous and argillaceous materials

B. Argillaceous and calcareous materials

C. Siliceous and calcareous materials

D. Siliceous, argillaceous and calcareous materials

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The minimum cover to the ties or spirals should not be less than

A. 15 mm

B. 20 mm

C. 25 mm

D. 50 mm

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For ensuring quality of concrete, use

A. Single sized aggregates

B. Two sized aggregate

C. Graded aggregates

D. Coarse aggregates

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The impurity of mixing water which affects the setting time and strength of concrete, is

A. Sodium sulphates

B. Sodium chlorides

C. Sodium carbonates and bicarbonates

D. Calcium bicarbonates

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Water cement ratio is generally expressed in volume of water required per

A. 10 kg

B. 20 kg

C. 30 kg

D. 50 kg

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For a reinforced concrete section, the shape of shear stress diagram is

A. Wholly parabolic

B. Wholly rectangular

C. Parabolic above neutral axis and rectangular below neutral axis

D. Rectangular above neutral axis and parabolic below neutral axis

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For preparing a test-specimen, it is necessary

A. To mix cement and fine aggregate by dry hand

B. To mix coarse aggregates

C. To mix water to the cement, fine aggregates and coarse aggregates

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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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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If 20 kg of coarse aggregate is sieved through 80 mm, 40 mm, 20 mm, 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is

A. 7.30

B. 7.35

C. 7.40

D. 7.45

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If the slump of a concrete mix is 60 mm, its workability is

A. Very low

B. Low

C. Medium

D. High

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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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Accepted Answer

D. None of these

Addition of pozzolana to cement

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

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

To hydrate 500kg of cement full water needed, is

As compared to ordinary Portland cement, high alumina cement has

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

If the average compressive strength is 4000 kg/cm2 and standard deviation is 500, the co-efficient of variation is

Finer grinding of cement

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

The increased cohesiveness of concrete, makes it

The risk of segregation is more for

Bulking of sand is maximum if moisture content is about

A construction joint is provided where

For a cantilever of effective depth of 0.5 m, the maximum span to satisfy vertical deflection limit is

Allowable shear strength of concrete, depends upon

Transport of concrete by pumps, is done for a distance of

Strength of concrete increases with

For road pavements, the cement generally used, is

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

Concrete mainly consists of

Cement used for normal concrete construction, is obtained by burning a mixture of

The minimum cover to the ties or spirals should not be less than

For ensuring quality of concrete, use

The impurity of mixing water which affects the setting time and strength of concrete, is

Water cement ratio is generally expressed in volume of water required per

For a reinforced concrete section, the shape of shear stress diagram is

For preparing a test-specimen, it is necessary

Water cement ratio is

An ideal ware house, is provided

If 20 kg of coarse aggregate is sieved through 80 mm, 40 mm, 20 mm, 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is

If the slump of a concrete mix is 60 mm, its workability is

The rock which is not calcareous, is:

Also checkout

Addition of pozzolana to cement

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

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

To hydrate 500kg of cement full water needed, is

As compared to ordinary Portland cement, high alumina cement has

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

If the average compressive strength is 4000 kg/cm2 and standard deviation is 500, the co-efficient of variation is

Finer grinding of cement

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

The increased cohesiveness of concrete, makes it

The risk of segregation is more for

Bulking of sand is maximum if moisture content is about

A construction joint is provided where

For a cantilever of effective depth of 0.5 m, the maximum span to satisfy vertical deflection limit is

Allowable shear strength of concrete, depends upon

Transport of concrete by pumps, is done for a distance of

Strength of concrete increases with

For road pavements, the cement generally used, is

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

Concrete mainly consists of

Cement used for normal concrete construction, is obtained by burning a mixture of

The minimum cover to the ties or spirals should not be less than

For ensuring quality of concrete, use

The impurity of mixing water which affects the setting time and strength of concrete, is

Water cement ratio is generally expressed in volume of water required per

For a reinforced concrete section, the shape of shear stress diagram is

For preparing a test-specimen, it is necessary

Water cement ratio is

An ideal ware house, is provided

If 20 kg of coarse aggregate is sieved through 80 mm, 40 mm, 20 mm, 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is

If the slump of a concrete mix is 60 mm, its workability is

The rock which is not calcareous, is:

Also checkout

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