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Concrete Technology and Design of Concrete Structures

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

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

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Concrete Technology and Design of Concrete Structures
The slab is designed as one way if the ratio of long span to short span is

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

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Concrete Technology and Design of Concrete Structures
In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

compressive
tensile
tensile or compressive
zero

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Concrete Technology and Design of Concrete Structures
In case of hand mixing of concrete, the extra cement to be added is

10%
5%
15%
20%

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Concrete Technology and Design of Concrete Structures
The average permissible stress in bond for plain bars in tension is

decreased by 10% for bars in compression
increased by 25% for bars in compression
decreased by 25% for bars in compression
increased by 10% for bars in compression

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Concrete Technology and Design of Concrete Structures
The effect of adding calcium chloride in concrete is i) to increase shrinkage ii) to decrease shrinkage iii) to increase setting time iv) to decrease setting time The correct answer is

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

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