Concrete Technology and Design MCQ Question with Answer

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

Question No : 50
In slump test, each layer of concrete is compacted by a steel rod 60 cm long and of 16 mm diameter for

20 times

25 times

30 times

50 times

Question No : 51
The specifications of a cement bag for storage, are

Weight 50 kg

Height 18 cm

Plan area 3000 sq. cm

All the above

Question No : 52
Maximum distance between expansion joints in structures as per IS: 456 1978 is

20 m

30 m

45 m

60 m

Question No : 53
Inert material of a cement concrete mix, is

Water

Cement

Aggregate

None of these

Question No : 54
The type of aggregates of same nominal size, which contain less voids when compacted, are

Rounded spherical

Irregular

Flaky

None of these

Question No : 55
Pick up the correct statement from the following:

Segregation is necessary for a workable concrete

Consistency does not affect the workability of concrete

If the concrete mix is dry, the slump is maximum

None of these

Question No : 56
The operation of removing humps and hollows of uniform concrete surface, is known as

Floating

Screeding

Trowelling

Finishing