Civil Engineering - Concrete Technology

26. 

The bulk density of aggregates, depends upon

A. shape
B. grading
C. compaction
D. all the above.

Answer: Option D

Explanation:

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27. 

Pick up the correct statement from the following:

A. The bulk density of fine aggregate is usually about 10 per cent more than that of coarse aggregate of similar composition
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. A highly absorptive aggregate reduces the workability of concrete considerably
E. All the above.

Answer: Option E

Explanation:

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28. 

Horizontal construction joints in concrete walls are generally provided at

A. soffit level
B. window sill level
C. floor level
D. all the above.

Answer: Option D

Explanation:

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29. 

Pick up the correct statement from the following:

A. Construction joints in columns are provided a few cm below the junction of beam
B. Construction joints in columns are provided at the bottom haunching
C. Construction joints in beams and slabs are provided within middel third
D. Constructionjoints are generally provided in positions subjected to least shear force
E. All the above.

Answer: Option E

Explanation:

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30. 

For a concrete mix 1:3:6 and water cement ratio 0.6 both by weight, the quantity of water required per bag, is

A. 10 kg
B. 12 kg
C. 14 kg
D. 16 kg
E. 20 kg

Answer: Option C

Explanation:

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