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Civil Engineering - Concrete Technology

Exercise : Concrete Technology - Section 2
21.
Percentage of pozzolanic material containing clay upto 80% used for the manufacture of pozzolana cement, is
30%
40%
50%
60%
70%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are:
70 litres of sand and 120 litres of aggregates
70 kg of sand and 140 litres of aggregates
105 litres of sand and 140 litres of aggregates
105 litres of sand and 210 litres of aggregates
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The process of hardening the concrete by keeping its surface moist is known
placing
wetting
curing
compacting
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The grade of concrete not recommended by I.S. : 456, is
M 100
M 200
M 300
M 400
M 500
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
C.R.R.I. charts are used to obtain a relatioship between strength of concrete and
water cement ratio
workability
grading of aggregate
fineness modulus
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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