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Civil Engineering - Concrete Technology

Exercise : Concrete Technology - Section 3
31.
Concrete containing
silicious aggregates, has higher co-efficient of expansion
igneous aggregates, has intermediate coefficient of expansion
lime stones, has lowest co-efficient of expansion
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. seive No. 9, more than
5%
10%
15%
20%
25%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
The top diameter, bottom diameter and the height of a slump mould are :
10 cm, 20 cm, 30 cm
10 cm, 30 cm, 20 cm
20 cm, 10 cm, 30 cm
20 cm, 30 cm, 10 cm
30 cm, 20 cm, 10 cm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Workability of concrete mix with low water cement ratio is determined by
tensile strength test
slump test
compaction factor test
flexural strength test
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
While designing an air entrained concrete
water cement ratio is reduced
proportion of aggregates is reduced
an allowance for the entrained air is made
strength of the concrete, is reduced
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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