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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
Shrinkage of concrete depends uponi) humidity of atmosphereii) passage of timeiii) stress The correct answer is

(i) and (ii)
only (iii)
All (i), (ii) and (iii)
(ii) and (iii)

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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
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

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

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Concrete Technology and Design of Concrete Structures
The factor of safety for

steel is lower than that for concrete
None of these
steel is higher than that for concrete
steel and concrete are same

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Concrete Technology and Design of Concrete Structures
Sinking of an intermediate support of a continuous beam
i) reduces the negative moment at support
ii) increases the negative moment at support
iii) reduces the positive moment at center of span
iv) increases the positive moment at center of span
The correct answer is

(ii) and (iv)
(i) and (iv)
(i) and (iii)
(ii) and (iii)

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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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