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Noise Fence Sound Barrier Wall
Production of metal composite insulation panels highway microporous insulation board series , shutters, Sandwich , size needs to be customized according to each household .
Sound barrier consists of two parts of steel columns and absorbing insulation panel composed of the column is the primary force component sound barrier , which is fixed by bolts or welding on the road side barrier wall or rail embedded steel ; suction noise acoustic absorption panels are the main component , it is through high-strength spring clamp to secure the H- column tank to form the sound barrier. Sound barrier has been designed to more fully consider the elevated highway , crash safety urban light rail, subway wind load , transport vehicles and all-weather outdoor corrosion problems. It is nice shape, producing exquisite , easy to transport , install , low cost, long life, especially for the elevated highway and urban light rail, subway use anti- noise , is a modern city ideal acoustic noise reduction facilities. Material was called sound-absorbing material .
Highway sound barriers, sound barrier rail , rail transit sound barriers, sound barriers viaduct traffic noise sound barrier prevention projects, sound-absorbing materials are commonly used metals ( metal perforated aluminum sheet, galvanized sheet metal louver hole sound absorption screen )
Noise Fence Sound Barrier Wall Application
Mainly for highway sound barriers, elevated composite roads, urban light rail subway and other transportation facilities in the municipal acoustic noise, control the impact of traffic noise on nearby urban areas, can also be used for acoustic noise reduction factories and other noise sources.
Noise Fence Sound Barrier Wall Specification
| Specifications and technical parameters |
| Size |
Performance and testing project |
Test Standards |
Test Results |
| Length: can be customized height: 500mm Thickness: 85mm-140mm |
Noise Reduction Coefficient |
GBJ47-83 |
NRC=0.84 |
| Fire rating |
GB/T13350-2000 |
A Level（Noncombustible） |
| Insulation |
GB/T13350-92 |
≤0.042VV（M.K） |
| Soundproofing |
GB/T13350-2008 |
≥50db |
| Sound absorption coefficient |
GB/T13350-2008 |
>0.863 |
Noise Fence Sound Barrier Wall Surface Treatment
Untreated
Painting
Hot Dip Galvanizing
pvc
Noise Fence Sound Barrier Wall Precautions
Sound barrier, the height of 5m 1m a room, covering an average noise reduction of the effective area of 10 ~ 15dB (A) (125Hz ~ 40000Hz, 1/3 octave), up to 20dB (A). In general, the higher the sound barrier, or farther away from the sound barrier, noise, the better.
Frequency, distance, height and the sound source and the receiving point of the barrier between the barrier and the amount of noise reduction of noise factors. Large component of the relationship between sound and noise reduction barriers and noise frequency, more than 2000Hz frequency sound than the noise reduction effect of around 800 a 1000Hz frequency sound better, but for about 25Hz low frequency sound. Due to relatively long wavelength acoustic diffraction from the barrier easily top the past, so the effect is poor. Typically, high-frequency acoustic sound barrier can reduce the l0-15dB. The height of the sound barrier, according to the height of doubling the distance between the sound source and the receiving point of the design, barrier, it can increase the amount of noise 6dB, in order to make better noise barrier should try to keep close to the sound barrier point source or sink.
Noise Fence Sound Barrier Wall Projects
