__________________ 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 plasterI 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

__________________ surface is prepared when it is desired to give acou

1.	__________________ 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 plasterI 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
Answer» 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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