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For the following questions answer them individually
Separation of coarse aggregates from mortar during transportation is known
bleeding
creeping
segregation
shrinkage
Pick up the correct statement from the following:
High percentage of $$(C_3 S)$$ and low percentage of $$(C_2 S)$$ cause rapid hardening
High percentage of $$(C_3 S)$$ and low percentage of $$(C_2 S)$$ make the cement lessresistive to chemical attack
Low percentage of $$(C_3 S)$$ and high percentage of $$(C_2 S)$$ contribute to slowhardening
All option are correct
Water cement ratio is
volume of water to that of cement
weight of water to that of cement
Both 'volume of water to that of cement ' and 'weight of water to that of cement '.
weight of concrete to that of water
Higher workability of a concrete is required if the structure is
made with cement concrete
thick and reinforced
thin and heavily reinforced
thick and heavily reinforced
Workability of concrete mix with low water cement ratio is determined by
tensile strength test
slump test
compaction factor test
flexural strength test
For preparing a test specimen it is necessary
to mix cement and fine aggregate by dry hand
to mix coarse aggregates
to mix water to the cement, fine aggregates and coarse aggregates
The maximum thickness of concrete floor of a cement warehouse is
10 cm
15 cm
20 cm
25 cm
The compaction of concrete improves
density
strength
durability
Horizontal construction joints in concrete walls are generally provided at
window sill level
soffit level
floor level
Workability of concrete for a given water content is good if the aggregates are
rounded aggregate
irregular aggregate
angular aggregate
flaky aggregate
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