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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
The property of the ingredients to separate from each other while placing the concrete is called

compaction
bulking
segregation
shrinkage

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

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

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Concrete Technology and Design of Concrete Structures
The strength of concrete after one year as compared to 28 days strength is about

15 to 20% more
20 to 25% more
25 to 50% more
10 to 15% more

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Concrete Technology and Design of Concrete Structures
Modulus of elasticity of steel as per IS : 456-1978 shall be taken as

2xl06N/cm²
200kN/mm²
200 kN/cm²
20 kN/cm²

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

4%
7%
5%
6%

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Concrete Technology and Design of Concrete Structures
The depth of footing for an isolated column is governed by
i) maximum bending moment
ii) shear force
iii) punching shear
The correct answer is

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

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