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Civil Engineering - Concrete Technology

Exercise : Concrete Technology - Section 2
6.
1.S. Sieve Nos. 10 mm and 4.75 mm are geneally used for grading of
coarse aggregates
fine aggregates
neither (a) nor (b)
both (a) and (b)
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Pick up the correct statement from the following:
The free water is the amount of water added while mixing and the amount of water held on the surface of the aggregates prior to mixing
The total water is the free water and the amount actually absorbed by the aggregates
Neither (a) nor (b)
Both (a) and (b).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Addition of pozzolana to ordinary port land cement, causes
decrease in early strength
reduction in chemical action with sulphates
increase in shrinkage
reduction bleeding
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Too wet concrete may cause
weakness of concrete
excessive laitance
segregation
lower density
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Addition of pozzolana to cement causes
reduction in permeability
loss of heat of hydration
reduction in bleeding
increase in curing time
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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