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Concrete Technology - Section 1 (2)

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Concrete Technology - Section 1

This section is full with the important questions related to this field
and you can give test if you want to enhance the aptitude ability.

9. 

Pick up the correct statement from the  following:

A. The weight of ingredients of concrete mix, is taken in kilograms
B. Water and aggregates are measured in litres
C. The finished concrete is measured in cubic metres
D. 20 bags of cement make one tonne
E. All the above.

Answer: Option E

Explanation:

No answer description available for this question. Let us discuss.

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10. 

The high strength of rapid hardening cement at early stage, is due to its

A. finer grinding
B. burning at high temperature
C. increased lime cement
D. higher content of tricalcium.

Answer: Option C

Explanation:

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11. 

Slump test is done for

A. clay
B. sand
C. lime
D. concrete.

Answer: Option D

Explanation:

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12. 

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. 59-12-109-1
B. 59-12-109-2
C. 59-12-109-3
D. 59-12-109-4
E. 59-12-109-5

Answer: Option B

Explanation:

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13. 

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

A. 100 m
B. 200 m
C. 300 m
D. 400 m
E. none of these.

Answer: Option D

Explanation:

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14. 

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

Answer: Option A

Explanation:

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15. 

The preliminary test is repeated if the difference of compressive strength of three test specimens, exceeds

A. 5 kg/cm2
B. 8 kg/cm2
C. 10 kg/cm2
D. 12 kg/cm2
E. 15 kg/cm2

Answer: Option E

Explanation:

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16. 

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. Excess quantity of water causes bleeding in concrete
E. All the above.

Answer: Option E

Explanation:

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