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A conical hole in plastered surface is formed due to ___________

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in Construction & Building Materials by (190k points)
A conical hole in plastered surface is formed due to ___________

(a) Popping

(b) Rust stains

(c) Softness

(d) Uneven surface

I got this question in an online quiz.

My enquiry is from Defects in Plastering topic in section Pointing and Plastering of Construction & Building Materials

1 Answer

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Best answer
Right choice is (a) Popping

To elaborate: 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.

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