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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
As compared to ordinary portland cement, use of pozzuolanic cement

increases strength
increases shrinkage
increases bleeding
reduces workability

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

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Concrete Technology and Design of Concrete Structures
While designing the pile as a column, the end conditions are nearly

both ends hinged
both ends fixed
one end fixed and other end hinged
one end fixed and other end free

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

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Concrete Technology and Design of Concrete Structures
The purpose of reinforcement in pre-stressed concrete is

To resist tensile stresses
All of these
To provide adequate bond stress
To impart initial compressive stress in concrete

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

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

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