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Concrete Technology and Design of Concrete Structures

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

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

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

reduces workability
increases shrinkage
increases bleeding
increases strength

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Concrete Technology and Design of Concrete Structures
In a counterfort retaining wall, the main reinforcement is provided on the i) bottom face in front counterfort ii) inclined face in front counterfort iii) bottom face in back counterfort iv) inclined face in back counterEort The correct answer is

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

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Concrete Technology and Design of Concrete Structures
Increase in the moisture content in concrete

increases the strength
reduces the strength
All of these
does not change the strength

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Concrete Technology and Design of Concrete Structures
Which of the following has high tensile strength ?

plain hot rolled wires
cold drawn wires
heat treated rolled wires
all have same tensile strength

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Concrete Technology and Design of Concrete Structures
When shear stress exceeds the permissible limit in a slab, then it is reduced by

Using thinner bars but more in number
Providing shear reinforcement
Using high strength steel
Increasing the depth

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