Different sound insulating materials:
1) Asbestos , 2) rock wool , 3)glass ,4)silk, 5)Han felt
6) Mineral wool boards, 7)cane fibers. 8) Acoustical plaster boards and tiles
9)Corkoustics 10) Celotex building boards.11) Glass fibers.
Suitability of sound insulating materials.
1) In Porous materials with a solid skeleton, sound is absorbed as a result of viscous friction inside the porous. Light weight concrete with porous aggregate, foam glass, mineral wool, glass wool in the form of strips, slabs, roll, mats and strips are suitable materials used in various constructions underneath the floor.
2) Porous jagged structures, based on plastics, rubber are available in the form of strips and liners. They provide sound proofing of reinforced concrete floors.
3) Loose composition, like artificial and natural sand, slag is used as fillers.
4) Panel material like veneer panel, rigid wood fibre board, are suitable for interior finishing of buildings to improve acoustic properties by dampening noises.
5) Baffle materials which includes, thin panels from veneer, solid card board are suitable for facing suspended ceilings to insulate noise.
6) Acoustic tiles and acoustic plaster are suitable where absorption of sound required from tile to tile should be uniform.