Which of the following region absorbs less radiation and transmits more during radiography test for concrete?

Civil Engineering : Concrete Technology - Quiz(MCQ)

High density region

Low density region

Low and high density regions adsorb

Low and high density regions absorb and transmit same amount of radiation

Correct Answer : Low density region

Explanation : In radiography test internal flaws are detected using short wavelength electromagnetic radiations such as X-rays and rays. The component to be tested is put in the direction of radiations generated by X-rays or rays in this approach.

Recently Updated in Concrete Technology Questions

Which of the following compound is used for fine polishing?

Nitric oxide

Iron oxide

Silicon carbide

Aluminum oxide

Correct Answer : Option (D) : Aluminum oxide

Explanation : Powder form of aluminum oxide is used for fine polishing process. It is surface treatment process.

Maximum nominal size of aggregates to be used in concrete may be as large as possible within the limits prescribed by __________

IS 456-2010

IS 456-2000

IS 465-2000

IS 513-1999

Correct Answer : Option (B) : IS 456-2000

Explanation : Option can be eliminated because there is no such code. Maximum nominal size of aggregates to be used in concrete may be as large as possible within the limits prescribed by IS 456:2000.

Air contents should be _________ % by volume.

1-2

2-3

3-4

4-5

Correct Answer : Option (C) : 3-4

Explanation : This type of cement was first of all developed in U.S.A. It is recommended that air contents should be 03-04 % by volume.