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Civil Engineering - Concrete Technology - Discussion

Discussion Forum : Concrete Technology - Section 3 (Q.No. 48)
Concrete Technology
48.
Pick up the correct statement from the following:
An increase in water content must be accompanied by an increase in cement content
Angular and rough aggregates reduce the workability of the concrete
Large size aggregates increase the workability due to lesser surface area
The slump of the concrete mix decreases due to an increase in temperature
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.
Reshika said:   4 years ago
Size is inversely proportional to surface area. When the aggregate are broken down to smaller sizes, more surface area is exposed. Thus, for the same volume, large sized aggregate have lesser surface area, thereby lesser wetting area, leading to more free water which in turn improves workability.
(2)
Rohan Mukherjee said:   5 years ago
Please explain option C.
Aamir said:   5 years ago
Option C is not true. The rest remaining right.
Bina rai said:   1 decade ago
How is this answer option E true. Can any one answer me?
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