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Concrete Technology and Design MCQ - Multiple Choice Question and Answer

Concrete Technology and Design MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 8
Addition of pozzolana to cement

Decreases workability
Increases strength
Increases heat of hydration
None of these

Question No : 9
The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by

fcr - fcs = fcl
fcr > fcs > fcl
fcr < fcs < fcl
fcs > fcr > fcl

Question No : 10
The increased cohesiveness of concrete, makes it

Less liable to segregation
More liable to segregation
More liable to bleeding
More liable for surface scaling in frosty weather

Question No : 11
For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

0.75 - 0.80
0.80 - 0.85
0.85 - 0.92
Above 0.92

Question No : 12
A beam curved in plan is designed for

Bending moment and shear
Bending moment and torsion
Shear and torsion
Bending moment, shear and torsion

Question No : 13
For the design of retaining walls, the minimum factor of safety against overturning is taken as

1.5
2.0
2.5
3.0

Question No : 14
In a ring beam subjected to uniformly distributed load (i) Shear force at mid span is zero (ii) Shear force at mid span is maximum (iii) Torsion at mid span is zero (iv) Torsion at mid span is maximum The correct answer is

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