Question

Which test can be performed without skilled labor?

(a) Probe test

(b) Bend liquid test

(c) Dye penetrant test

(d) Torsion test

This question was posed to me during an interview.

My question is from Various Testing Methods in section Special Concrete and Concreting Methods of Concrete Technology

Answer 1

The correct choice is (c) Dye penetrant test

To explain I would say: Dye penetrant test does not require any skilled labor. This method only detects surface discontinuities and this test needs to be observed with naked eyes or with low magnifying glass.