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Civil Engineering - Concrete Technology

Exercise : Concrete Technology - Section 4
36.
Pick up the incorrect statement from the following:
Tricalcium silicate (C3S) hydrates rapidly
Tricalcium silicate (C3S) generates more heat of hydration
Tricalcium silicate (C3S) develops early strength
Tricalcium silicate (C3S) has more resistance to sulphate attack
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Permissible compressive strength of M 200 concrete grade is
100 kg/cm2
150 kg/cm2
200 kg/cm2
250 kg/cm2
300 kg/cm2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
In slump test, each layer of concrete is compacted by a steel rod 60 cm long and of 16 mm diameter for
20 times
25 times
30 times
40 times
50 times
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
If the average compressive strength is 4000 kg/cm2 and standard deviation is 500, the co-efficient of variation is
10%
12.5%
15%
18.5 %
20%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
For preparing ordinary concrete, the quantity of water used, is
5% by weight of aggregates plus 20% of weight of cement
10% by weight of aggregates plus 10% of weight of cement
5% by weight of aggregates plus 30% of weight of cement
30% by weight of aggregates plus 10% of weight of cement
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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