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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
Admixtures which cause early setting, and hardening of concrete are called

workability admixtures
accelerators
air entraining agents
retarders

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Concrete Technology and Design of Concrete Structures
A beam curved in plan is designed for

bending moment and shear
bending moment and torsion
bending moment, shear and torsion
shear and torsion

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Concrete Technology and Design of Concrete Structures
In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

tensile
zero
tensile or compressive
compressive

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Concrete Technology and Design of Concrete Structures
In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on i) bottom face near counterfort ii) top face near counterfort iii) bottom face near centre of span iv) top face near centre of span The correct answer is

only (i)
both (i) and (iv)
both (ii) and (iii)
only (ii)

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Concrete Technology and Design of Concrete Structures
Approximate value of shrinkage strain in concrete, is

0.003
0.0003
3.0E-5
0.03

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Concrete Technology and Design of Concrete Structures
If the permissible stress in steel in tension is 140 N/mm², then the depth of neutral axis for a singly reinforced rectangular balanced section will be

dependent on grade of concrete also
0.45 d
0.35 d
0.40 d

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