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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
In a spherical dome the hoop stress due to a concentrated load at crown is

tensile everywhere
zero
partly compressive and partly tensile
compressive everywhere

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Concrete Technology and Design of Concrete Structures
Workability of concrete is directly proportional to

Aggregate cement ratio
All of above
Time of transit
Grading of the aggregate

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Concrete Technology and Design of Concrete Structures
Diagonal tension in a beam

Decreases below the neutral axis and increases above the neutral axis
Is maximum at neutral axis
Remains same
Increases below the neutral axis and decreases above the neutral axis

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Concrete Technology and Design of Concrete Structures
If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called

over-reinforced beam
under-reinforced beam
balanced beam
None of these

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Concrete Technology and Design of Concrete Structures
Select the incorrect statement for ...

Lean mixes bleed more as compared to rich ones.
None of these
Bleeding can be minimized by adding pozzuolana finer aggregate.
Bleeding can be increased by addition of calcium chloride.

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Concrete Technology and Design of Concrete Structures
The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called

bleeding
segregation
creep
bulking

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