Download Aptitude Crack
img not found img not found

Building Materials

Q1: Sea sand used in structures causes

A dampness

B efflorescence

C disintegration

D All of these.

ANS:D - All of these.

Efflorescence is the white powdery substance on the surfaces of unsealed concrete and the white blush seen with sealed floors. Efflorescence is caused by vapor migrating through the slab bringing soluble salts to the surface of the concrete.



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.