A conical hole in plastered surface is formed due to ___________
A. Popping
B. Rust stains
C. Softness
D. Uneven surface
A. Popping
B. Rust stains
C. Softness
D. Uneven surface
Right choice is A. Popping
Sometimes the Plaster mix contains particles with expand on being set. A conical hole in plastered surface is formed in front of the particle. This conical whole is known as the blow or pop.