This set of Concrete Technology Multiple Choice Questions & Answers (MCQs) focuses on “Factors Affecting Shrinkage”.
1. It is observed that 14-34% of the 20 years shrinkage occurs in ________
a) 2 weeks
b) 3 months
c) 6 months
d) 1 year
View Answer
Explanation: It is observed that 14-34% of the 20 years shrinkage occurs in 2 weeks.
2. It is observed that 40-80% of the 20 years shrinkage occurs in _____________
a) 2 weeks
b) 3 months
c) 6 months
d) 1 year
View Answer
Explanation: It is observed that 40-80% of the 20 years shrinkage occurs in 3 months.
3. It is observed that 66-85% of the 20 years shrinkage occurs in _____
a) 2 weeks
b) 3 months
c) 6 months
d) 1 year
View Answer
Explanation: It is observed that 66 to 85% of the 20 years shrinkage occurs in 1 year.
4. If the concrete is placed in 100% relative humidity for a length of time then there WON’T be any shrinkage.
a) True
b) False
View Answer
Explanation: If the concrete is placed in 100% relative humidity for a length of time then there won’t be any shrinkage instead there’ll be slight swelling.
5. The magnitude of autogenous shrinkage is ________
a) .001
b) .0001
c) .01
d) .1
View Answer
Explanation: The magnitude of autogenous shrinkage is in the order of about .0001.
6. From the below figure, what is A here?
a) Grave
b) Sand stone
c) Quartz
d) Granite
View Answer
Explanation: Aggregates plays an important role in the shrinkage properties of concrete. According to option, A is Sand stone.
7. From the below figure, what is B here?
a) Grave
b) Sand stone
c) Quartz
d) Granite
View Answer
Explanation: Aggregates plays an important role in the shrinkage properties of concrete. According to option, B is Granite.
8. From the below figure, what is C here?
a) Grave
b) Sand stone
c) Quartz
d) Granite
View Answer
Explanation: Aggregates plays an important role in the shrinkage properties of concrete. According to option, C is Quartz.
9. Which aggregates have high shrinkage?
a) Grave
b) Sand stone
c) Quartz
d) Granite
View Answer
Explanation: Aggregates plays an important role in the shrinkage properties of concrete. And sand stone has high shrinkage.
10. Which aggregates have low shrinkage?
a) Grave
b) Sand stone
c) Quartz
d) Granite
View Answer
Explanation: Aggregates plays an important role in the shrinkage properties of concrete. And quartz has low shrinkage.
Sanfoundry Global Education & Learning Series – Concrete Technology.
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