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Civil Engineering - Concrete Technology

Exercise : Concrete Technology - Section 5
16.
Bulking of sand is
mixing of different sizes of sand particles
mixing of lime with sand
maximum water with sand
swelling of sand when wetted.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Curing of pavements, floors, roofs and slabs, is done by
membrane method
ponding method
covering surface with bags
sprinkling water method
shading concrete method.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Pick up the incorrect statement from the following:
With passage of time, the strength of cement increases
With passage of time, the strength of cement decreases
After a period of 24 months, the strength of cement reduces to 50%
The concrete made with storage deteriorated cement, gains strength with time
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
The surface where two successive placements of concrete meet, is known as
Contraction joint
Expansion joint
Construction joint
both (a) and (b)
both (6) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
An excess of flaky particles in concrete aggregates
decreases the workability
increases the quantity of water and sand
affects the durability of concrete
more than 15% are not desirable
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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