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State suitability of: (i) Water proofing materials and (ii) Sound insulating materials

1 Answer

i) Suitability of water proofing materials:

1. Concrete, Bricks, Stones, plaster have tendency to get deteriorate, hence leakage of water may occur in slab, beam, columns. Bitumen and tars are used for water proof coatings for making surfaces hydrophobic, for priming surfaces.

2. Fibre glass water proofing material is a roll water proofing material suitable for roofs and slabs.

3. Sealing water proof material are used for filling exterior joints in buildings and installations

4. Prefabricated water proofing concrete items are suitable for anti-corrosion waterproofing of installations

5. Water proofing asphalt slabs are suitable for the waterproofing work and filling of deformation joints.

6. Paints are suitable for the waterproofing of external walls where cracks are developed.

7. Plastics waterproofing membranes in the form of sheets prevent water penetration into pores and voids in structures.

8. Water proofing chemicals in liquid or powder form like zinc sulphate, alkaline silicates calcium chloride are added to concrete to improve resistance to water absorption.

9. Water repellents like soda, potash, calcium soaps, and waxes are suitable for pore blocking.

ii) Suitability of sound insulating materials:

1) In Porous materials with a solid skeleton, sound is absorbed as a result of viscous friction inside the pours. Light weight concrete with porous aggregate, foam glass, mineral wool, glass wool in the form of strips, slabs, roll, mats 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 is required.
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