Concrete Technology Questions and Answers – Setting Time Test

This set of Concrete Technology Multiple Choice Questions & Answers (MCQs) focuses on “Setting Time Test”.

1. In cement hardening process ___________ instants are very important.
a) 1
b) 2
c) 3
d) 4
View Answer

Answer: b
Explanation: In cement hardening process, two instants are very important, i.e. initial setting and final setting.

2. What is the initial setting time?
a) The time at which cement paste loses its plasticity
b) The time at which cement paste loses its elasticity
c) The time at which cement paste gains its plasticity
d) The time at which cement paste gains its elasticity
View Answer

Answer: a
Explanation: The time at which cement paste loses its plasticity is known as initial setting time of the concrete.

3. Initial setting time of OPC should not be less than ___________
a) 15 minutes
b) 30 minutes
c) 28 minutes
d) 1 hour
View Answer

Answer: b
Explanation: As per IS specification, the minimum initial setting time is 30 minutes for ordinary portland cement.
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4. Final setting time of cement should not be more than _______
a) 1 hour
b) 2 hours
c) 5 hours
d) 10 hours
View Answer

Answer: d
Explanation: As per IS specification, the maximum final setting time for all type of cement is 10 hours.

5. In the soundness test, the whole assembly is immersed in water for _______
a) 30 minutes
b) 1 hour
c) 24 hours
d) 48 hours
View Answer

Answer: c
Explanation: Submerge the whole assembly immediately in water at a temperature of 27oC ± 2oC and keep it there for 24 hour for better results.
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6. What is the final setting time?
a) The time at which cement paste loses its plasticity
b) The time to reach that stage at which cement paste loses its elasticity
c) The time at which cement paste gains its plasticity
d) The time when cement paste becomes hardened
View Answer

Answer: a
Explanation: The final setting is defined as the time taken to reach the cement paste to become into a hardened mass.

7. Initial setting time of Low Heat Cement should not be less than _____________
a) 15 minutes
b) 30 minutes
c) 60 minutes
d) 1 hour
View Answer

Answer: c
Explanation: As per IS specification, the minimum initial setting time is 60 minutes for low heat cement.
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8. If t1=Time at which water is first added to cement, t2=Time when needle fails to penetrate 5 mm to 7 mm from bottom of the mould, t3=Time when the needle makes an impression but the attachment fails to do so, then what is initial setting time?
a) t2-t1
b) t2+t1
c) t3-t1
d) 2*t1
View Answer

Answer: a
Explanation: t2-t1 is the formula to determine the value of the initial setting time of concrete for further process.

9. If t1=Time at which water is first added to cement, t2=Time when needle fails to penetrate 5 mm to 7 mm from bottom of the mould, t3=Time when the needle makes an impression but the attachment fails to do so, then what is final setting time?
a) t2-t1
b) t2+t1
c) t3-t1
d) 2*t1
View Answer

Answer: c
Explanation: t3-t1 is the formula to determine the value of the final setting time of concrete for further process.
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10. What is the capacity of a measuring cylinder?
a) 10ml
b) 50ml
c) 100ml
d) 1000ml
View Answer

Answer: c
Explanation: The capacity of the measuring cylinder is 100 ml with the least count of 1 ml for the setting time test.

Sanfoundry Global Education & Learning Series – Concrete Technology.

To practice all areas of Concrete Technology, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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