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

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 (iii)

(i) and (iii)

(ii) and (iv)

(i)and(iv)

(ii) and (iii)

(i) and (iii)

(ii) and (iv)

(i)and(iv)

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Concrete Technology and Design of Concrete Structures
According to IS : 456-1978, the fiexural strength of concrete is

directly proportional to square root of compressive strength

inversely proportional to compressive strength

directly proportional to compressive strength

inversely proportional to square root of compressive strength

directly proportional to square root of compressive strength

inversely proportional to compressive strength

directly proportional to compressive strength

inversely proportional to square root of compressive strength

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Concrete Technology and Design of Concrete Structures
Select the incorrect statement...

For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system

The loss of prestress is more in pre-tensioning system than in post-tensioning system.

Pretensioning system has greater certainty about its durability.

None of these

For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system

The loss of prestress is more in pre-tensioning system than in post-tensioning system.

Pretensioning system has greater certainty about its durability.

None of these

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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)

(ii) and (iii)

(iii) and (iv)

(i) and (ii),

(i) and (iv)

(ii) and (iii)

(iii) and (iv)

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Concrete Technology and Design of Concrete Structures
As compared to ordinary portland cement, high alumina cement has

higher initial setting time but lower final setting time

lower initial setting time but higher final setting time

higher initial and final setting times

lower initial and final setting times

higher initial setting time but lower final setting time

lower initial setting time but higher final setting time

higher initial and final setting times

lower initial and final setting times

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Concrete Technology and Design of Concrete Structures
Maximum distance between expansion joints in structures as per IS : 456 – 1978 is

30 m

60 m

45 m

20 m

30 m

60 m

45 m

20 m

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Concrete Technology and Design of Concrete Structures

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

Concrete Technology and Design of Concrete Structures According to IS : 456-1978, the fiexural strength of concrete is

Concrete Technology and Design of Concrete Structures Select the incorrect statement...

Concrete Technology and Design of Concrete Structures As compared to ordinary portland cement, high alumina cement has

Concrete Technology and Design of Concrete Structures Maximum distance between expansion joints in structures as per IS : 456 – 1978 is

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

Concrete Technology and Design of Concrete Structures
According to IS : 456-1978, the fiexural strength of concrete is

Concrete Technology and Design of Concrete Structures
Select the incorrect statement...

Concrete Technology and Design of Concrete Structures
As compared to ordinary portland cement, high alumina cement has

Concrete Technology and Design of Concrete Structures
Maximum distance between expansion joints in structures as per IS : 456 – 1978 is