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Concrete Technology and Design of Concrete Structures

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

segregation
creep
bleeding
bulking

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Concrete Technology and Design of Concrete Structures
Bulking of sand is maximum if moisture content is about

5%
6%
4%
7%

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Concrete Technology and Design of Concrete Structures
Ratio of permissible stress in direct compression and bending compression is

less than 1
greater than 2
between 1 and 1.5
between 1.5 and 2.0

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Concrete Technology and Design of Concrete Structures
Maximum percentage reinforcement in case of slabs is limited to

8
2
4
9

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Concrete Technology and Design of Concrete Structures
The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse)

0.573 xu
0.446 xu
0.367 xu
0.416 xu

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Concrete Technology and Design of Concrete Structures
Poisson’s ratio for concrete

None of these
remains constant
increases with richer mixes
decreases with richer mixes

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