1. Common building materials
Acoustical materials & methods
Common building materials
Acoustical materials & methods
Acoustical materials & methods
Acoustical materials
Acoustical materials & methods
Common building materials
Acoustical materials
Common building materials
Acoustical materials
Done by:
Wafaa Awadh Al-Hudaifi
ID:

2. Common building materials
Brick.
Concrete.
Concrete masonry units
Glass.
Gypsum board.
Masonry .
Metals.
Plaster.
Plywood.
Resilient tile.
Steel decking.
Steel joists & trusses.
Steel stud.
Stone.
Wood decking.
Wood paneling.
Wood studs & joists.

3. Acoustical materials
The material reviewed below include variety of products whose purpose is strictly acoustical or that are commonly perceived as having acoustical value

4. Acoustical materials
Acoustical deck. an acoustical deck absorbs sound .its Nrc ranges from about to as high as o.90. if exposed as is usually intended an acoustical deck can greatly reduce noise and reverberation in space such as gymnasiums factories and workshops.
Acoustical foam. open-cell foams)excellent sound absorbers
Closed-cell foams also absorb sound but less efficiently and less predictably they are more often applied to ringing surfaces such as large metal plates to provide damping
Acoustical plaster. The performance of acoustical plaster is highly dependent on the order of 0.60 have been obtained under controlled condition ,but field installation usually yield much less acoustical plaster is not a reliable sound absorber

5. Acoustical tile. is usually suspended in a metal grid but some types of tile can be glued or otherwise attached to solid surfaces . the original purpose of acoustical tile was to absorb sound which to this day remains its principal function absorptivity rang from ranges from approximately NRC0.05 for the least efficient tiles to NRC 0.95 for the best(typically fiber glass)lay in panels
Carpet . carpet absorbs sound .it is in fact, the only floor finish that absorbs sound absorptivity depend primarily depends primarily on the total thickness of the pile and the porous or fibrous underlayment noise reduction coefficients range from o.20 to about 0,55 absorptivity is confined mainly to the high frequencies

6. Cellulose fiber
Curtains and fabrics
Duct lining
Fiberglass
Fibrous batts and blankets
Fibrous board
Fibrous plank
Fibrous spray
Insulation(loose)

7. Laminated glassLaminated glass is a kind of safety glass which is combined from one or more layers of PVB through heating and pressing processes by autoclave. On order to satisfy the requirements of different customers and designers, we're able to provide milky white or multi-cool, films and films with geometrical patterns other than transparent PVB for customers' selection. Laminated glass can be widely applied in houses, net racks, canopies, point- supporting curtains walls, observation elevators, airports, counter of bank and windows of motor, etc.
Lead sheetSheet lead is also very effective for waterproofing, soundproofing, and isolating/dampening mechanical vibration. It is highly resistant to environmental and chemical corrosion, and so can be used in nearly any indoor or outdoor application. Lead sheet is exceptionally versatile and easy to work with, allowing it to be bent, shaped, and cut to suit all applications, with no special tools required.
We offer a wide range of sheet lead from 1/32 inch to 1 inch thicknesses to meet the demands of any application. Walls, doors, window frames, and more can have lead sheet built into, or added to, them for effective shielding protection.
Sheet lead is also used in our lead lined drywall and lead lined plywood. These products offer the same shielding protection as stand alone sheet lead, with far greater structural strength.
Radiation Protection Products uses only the purest lead available for our Sheet Lead. Absolutely no refining takes place at our facility, making us one of the cleanest, most environmentally friendly radiation shielding providers in the industry, while providing you with the highest quality sheet lead available.

8. .
Metal pans
Mineral fiberMineral Fiber Board is the advanced decorative material which has the features of Decoration, Sound absorption, Fireproof, Preventing cold and hot, Energy-saving and Insulation .And we ara a large factory of mineral fiber board.OEM work is accepted.
Sealants
Slats and grilles

9. Special devices
The products discussed below are manufactured and used for strictly acoustical purposes a few absorb sound most attenuate sound or vibration .each is briefly discussed with reference to its properties and its typical applications

10. Air springs. Vibration Control
Air Spring Systems for Industrial Applications
ContiTech Air Spring Systems offer solutions for vibration- oriented mounting of machines. From the technical design all the way through to the harmonization of individual system components. ContiTech air springs make very low natural frequencies possible, from 0.5 to 3.5 Hz depending on the type. With loads ranging from 0.5 kN to more than 440 kN, ContiTech air isolators provide effective mounts for sensitive measuring instruments as well as heavy foundations.

11. HVAC Silencer Benefits:
Panl-Flow HVAC silencers are an excellent choice for applications requiring maximum insertion loss (noise reduction), low static pressure drop, low maintenance, and quick delivery. Use a Panl- Flow silencer wherever you need to reduce airborne noise while allowing air movement:
Air flow in and out of a noisy area or building
Fan and blower intake or discharge
Air Handling Plenums
Equipment Enclosures

12. Elastomers.
Elastomers such as neoprene are a family of elastic rubberlike materials used in the manufacture of resilient mounts and hangers and of other devices whose purpose is to avoid rigid contact and thus to attenuate noise or vibration . The efficiency of the elastomer is related to its hardness (durometer)