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Civil Engineering - Concrete Technology - Discussion

Discussion Forum : Concrete Technology - Section 2 (Q.No. 38)
Concrete Technology
38.
For an ordinary Portland cement
residual does not exceed 10% when sieved through IS Sieve No. 9
soundness varies from 5 to 10 mm
initial setting time is not less than 30 minutes
compressive stress after 7 days, is not less than 175 kg/cm2
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
26 comments Page 2 of 3.
Hardik chauhan said:   7 years ago
I agree with option C, as it says that "initial setting time is not less than 30minutes" that means it should be more than 30mnts, not less than 30. But we all know the Initial setting time of OPC is exactly 30 minutes, not more not less.
VIVEK SINGH said:   7 years ago
What should be a maximum initial setting time of OPC?
Anup said:   7 years ago
Option E is right. I also agree.
Shanker Lal said:   1 decade ago
Why not option "E"?
ER. Ravi said:   8 years ago
Answer E is correct, I think.
Raja said:   8 years ago
Definitely E is correct answer.
Hiren said:   8 years ago
Definitely E is the correct answer.
Nakul said:   8 years ago
The correct answer is E.
Gyan singh meena said:   8 years ago
All of these is correct answer.
MEET KOTADIA said:   8 years ago
Yes, I agree it would be (E).
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