This set of Concrete Technology Multiple Choice Questions & Answers (MCQs) focuses on “Concept of Concrete Mix Design”.
1. The _________ compressive strength required from structural consideration.
a) Nominal
b) Minimum
c) Maximum
d) No
View Answer
Explanation: Option d can be eliminated easily because we need atleast some compressive strength. The minimum compressive strength required from structural consideration.
2. The adequate workability necessary for _________ compaction with the compacting equipment available.
a) Half
b) Quarter
c) Full
d) Double
View Answer
Explanation: Option d can be eliminated easily because double compaction is not possible. The adequate workability necessary for full compaction with the compacting equipment available.
3. __________ water-cement ratio content to give adequate durability for the particular site conditions.
a) Minimum
b) Nominal
c) .5
d) Maximum
View Answer
Explanation: Maximum water-cement ratio and/or maximum cement content to give adequate durability for the particular site conditions. It helps to avoid shrinkage cracking due to temp cycle in mass concrete.
4. _________ cement content to avoid shrinkage cracking due to temperature cycle in mass concrete.
a) Minimum
b) Nominal
c) .5
d) Maximum
View Answer
Explanation: Maximum cement content to avoid shrinkage cracking due to the temperature cycle in mass concrete. It gives adequate durability for the particular site condition.
5. __________ has designated the concrete mixes into a number of grades as M10, M15.
a) IS 456-2000
b) IS 456-2010
c) IS 513-1999
d) IS 465-2000
View Answer
Explanation: IS 456-2000 has designated the concrete mixes into a number of grades as M10, M15, M20, M25, M30, M35 and M40.
6. What is the approx. mix proportion for M10?
a) 1:3:6
b) 1:2:4
c) 1:1.5:3
d) 1:1:2
View Answer
Explanation: According to IS 456-2000 code, the approximate value of mix proportion for grade M10 is 1:3:6.
7. What is the approx. mix proportion for M15?
a) 1:3:6
b) 1:2:4
c) 1:1.5:3
d) 1:1:2
View Answer
Explanation: According to IS 456-2000 code, the approximate value of mix proportion for grade M15 is 1:2:4.
8. What is the approx. mix proportion for M20?
a) 1:3:6
b) 1:2:4
c) 1:1.5:3
d) 1:1:2
View Answer
Explanation: According to IS 456-2000 code, the approximate value of mix proportion for grade M20 is 1:1.5:3.
9. What is the approx. mix proportion for M25?
a) 1:3:6
b) 1:2:4
c) 1:1.5:3
d) 1:1:2
View Answer
Explanation: According to IS 456-2000 code, the approximate value of mix proportion for grade M25 is 1:1:2.
10. Maximum nominal size of aggregates to be used in concrete may be as large as possible within the limits prescribed by __________
a) IS 456-2000
b) IS 456-2010
c) IS 513-1999
d) IS 465-2000
View Answer
Explanation: Option can be eliminated because there is no such code. Maximum nominal size of aggregates to be used in concrete may be as large as possible within the limits prescribed by IS 456:2000.
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]
- Check Civil Engineering Books
- Practice Civil Engineering MCQs
- Apply for Civil Engineering Internship
- Check Concrete Technology Books