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__________________ surface is prepared when it is desired to give acoustical treatment to the hall or room.

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in Construction & Building Materials by (190k points)
__________________ surface is prepared when it is desired to give acoustical treatment to the hall or room.

(a) Acoustic Plaster

(b) Marble plaster

(c) Barium plaster

(d) Gypsum plaster

I have been asked this question in my homework.

My query is from Special Materials for Plastered Surfaces in section Pointing and Plastering of Construction & Building Materials

1 Answer

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Right answer is (a) Acoustic Plaster

The explanation: The Acoustic Plastered surface is provided with minute openings that absorb the sound. The plaster is usually applied in two coats, each having a thickness of 6 mm. The finishing of the surface should be carried out in a such a way that it results in the formation of uniform porous surface.

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