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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
Minimum thickness of load bearing RCC wall should be

100 mm
40 mm
50 mm
105 mm

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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

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

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Concrete Technology and Design of Concrete Structures
Sinking of an intermediate support of a continuous beam
i) reduces the negative moment at support
ii) increases the negative moment at support
iii) reduces the positive moment at center of span
iv) increases the positive moment at center of span
The correct answer is

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

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Concrete Technology and Design of Concrete Structures
In counterfort retaining walls, the main reinforcement in the stem at support is

Provided both on inner and front faces
Provided only on front face
Not provided
Provided only on inner face

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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

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

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Concrete Technology and Design of Concrete Structures
Strength of concrete increases with

decrease in curing time
increase in fineness of cement
decrease in size of aggregate
increase in water-cement ratio

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