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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
The compressive strength of 100 mm cube as compared to 150 mm cube is always

None of these
more
less
equal

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

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

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Concrete Technology and Design of Concrete Structures
Air entrainment in the concrete increases

the effects of temperature variations
strength
the unit weight
workability

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Concrete Technology and Design of Concrete Structures
In a spherical dome the hoop stress due to a concentrated load at crown is

compressive everywhere
partly compressive and partly tensile
zero
tensile everywhere

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Concrete Technology and Design of Concrete Structures
In a counterfort retaining wall, the main reinforcement in the stem at mid span is provided on

both front face and inner face
None of these
front face only
inner face only

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Concrete Technology and Design of Concrete Structures
The effect of adding calcium chloride in concrete isi) to increase shrinkageii) to decrease shrinkageiii) to increase setting timeiv) to decrease setting timeThe correct answer is

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

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