Aluminum foam Sound Barrier for highway

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Product Description

 100% Recycling Soundproofing Closed Cell Aluminum Foam Panel



Specification of high speed railway (expressway) soundbarrier



Structure and construction method

High speed railway sound barrier


Aluminum perforated plate +Aluminum Foam + Sound  insulation panel

(system of high speed rail sound barrier)

Installation method ofsound barriers on highway and railway.

1. Mark the keel beaminstallation position on the high speed railway (expressway)

2. Install and fix the keelbeam

3. The distance between two beams is 500-600m

4. Install Aluminum foamsound-absorbing panel

5. Inset Aluminum alloy frame in order to fix the Aluminumfoam panel

6. Fix it to the beam with bolts

7. In order to prevent the bolts from loosening,install sturdy nuts.


1. Materials used for the high speedrailway (expressway) must be stainless steel or aluminum.

2. The specification of Aluminum foam sound-absorbing panelis adjustable as the design of high speed railway (expressway)

3. Color of Aluminum foam sound-absorbing panel can becustomized as required.

What is AluminumFoam?

Aluminum foam is a new concept metalmaterial which is foamed in sponge shape after melting aluminum ingot with various chemical ingredients and has many bubble layers inner structure.

Porous material is much lighterthan original one, which is the characteristic of porous. And, it improves the ability of  energy absorption and reduces the abilityof thermal and electrical conductivities than original metal materials. Inaddition, porous material has wide applications as well as excellent ability ofsound absorption and permeability of liquid, air, etc.

Aluminumfoam, a metal itself, can be applied to aerospace aviation required the  thermostability over 200℃. It is a 100%  recyclabl ecofriendly material and absolutely will not produceharmful substances no matter in the process of producing,  using or abandoning.

Main properties of aluminum foam


Density is 0.2~0.4g/cm3 (Aluminium1/10,Iron1/30, and Wood 1/4)


Porous structure has a good soundabsorption.

Aluminum foam sound-absorbing materialcan be used in the inner decoration of buildings (walls, ceiling and floor),railway, highway, factories, mechanical equipment and any other fields.

Suitable for noisy place.


100%non-flammability and no toxic gas released when burning.

Non-combustibility TEST verified to be qualified. <KIMM; IMO A.799 (19)>

I grade Non-flammability TEST ofaluminum foam surface verified to be qualified. <KICT; KS F2271>


Porous structure can effectively absorbenergy.

Have a great effect on energyabsorption after a high impact.

Firstly acquired the national SB5class (Guard rail shock-absorber)

Electromagnetic wave shielding ability

Aluminum foam has a function ofabsorbing electromagnetic wave

Widely used in military (stealth materials),TV station, hospital and any other electromagnetic shielding places.


100% recyclable Aluminum foam is nonpoisonous, odorless andharmless, no toxic gas released when burning.

Aluminum foam can be produced by recycled aluminum andits scraps.



Aluminum foam composed panel

Aluminum  honeycomb plate





Aluminum plate(GRP plate)

aluminum foam

aluminum plate(GRP plate)

Aluminum plate(GRP plate)

aluminum honeycomb

aluminum plate(GRP plate)

Waterproof performance

long time  immersion and corrosion in water)

Excellent(oxidized pure metal)

Excellent but easy to rust

Fireproof performance


(Non-flammability of pure metal)

General (Glue layer in the middle is not resistant to  high temperature)

ComparisonAluminum Foam with Other Sound-absorbing Materials


Aluminum Foam


Glass Fiber

Urethane Form





SiO2, mineral

high molecular Material

Acoustic absorption(NRC Standar d)

over 0.70

over 0.70

over 0.75

over 0.65

Long-term sound absorption


Property is decreased

Property is decreased

Property is decreased


100% recyclable Eco-friendly

No recyclable, flammable, produce  little dust

No recyclable, no flammable, arsenic acid cause gas  pollution

No recyclable and flammable

Materials handling & Constructability

Easy handling, using and working under no protective  equipment

No damage when handling and using, easy to work under no  protective equipment

Low stability. Easy to cause  respiratory disease and skin ailments when touching

No damage when handling and using, easy to work under no  protective equipment

Human harmfulness




Poisonous gas (CO, Cyan gas) release when burning

Waterproofness & Sound  absorption

Waterproofness is  excellent , stable form, permanent sound absorption

Waterproofness and  adhesion is good, stable form

Absorb moisture and poor drainage cause lower acoustic  absorption

Absorb moisture and poor drainage cause lower acoustic  absorption


grade Non-flammability
 -under 780℃


 -under 350℃

Easy flammable
 -under 100℃

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Q:High-speed railway sound barrier size which
4, the sound barrier to determine the length In order to avoid the end effect of sound barrier noise reduction effect, the design should be on the length of the sound barrier has a more reasonable selection. Now a large number of domestic sound barrier there are problems with the terminal effect. If the protection of 100 meters interval, the sound barrier to build 100 meters long, the terminal effect is serious, greatly reducing the sound barrier sound attenuation effect. From the effect point of view, the sound barrier built longer, the end effect will be smaller, the better the sound barrier effect. However, the sound barrier built too long will cause unnecessary waste. How does the length of the sound barrier be built to ensure the effect and save money? The author based on years of design research and practice experience, put forward "15 degrees angle determination method."
Q:Highway noise board, noise barrier barrier wall sound barrier how much money a square
Hello: I am a professional manufacturer, sound barrier prices generally based on the use of different materials, there will be different grades of the offer
Q:What is the cement sound barrier ah, how to install ah?
Not all the hardware are installed in the chassis on the finished, the hardware installed to have to install the program installed in the computer can be used, your installation program installed? If your hardware procedures are installed up,
Q:The theory of sound barrier
Sound insulation barrier location, as shown. Assuming that there is no diffraction phenomenon, the barrier can block all the sound. In fact, due to the diffraction of sound waves, the sound barrier effect of the barrier is related to the wavelength of the sound wave, the distance between the sound source and the receiver, and the sound insulation performance of the barrier material. The theory of barrier sound insulation is based on the diffraction theory of light waves. The difference between the shortest distance between the sound source and the receiving point is δ = (α + b) - (δ + b) - where the distance between the source and the receiver is the barrier, R + d); λ is the acoustic wavelength. Outdoor open (equivalent to semi-free field) sound insulation barrier noise reduction △ L and N relationship see table:
Q:Railway sound barrier installation costs how much money a square meter
Different areas of the highway sound barrier to choose the material, style, sheet thickness, the amount of engineering is different,
Q:Sound barrier workers installation fee
The cost is not the same, according to the difficulty of installation to calculate
Q:Sound barrier base steel pipe pile how to do
This look at the design requirements, are generally seamless just casing, building materials market can buy, come back to cut on the line
Q:What are the factors that affect the price of sound barriers?
3, sound barrier surface treatment and sound barrier filler Surface treatment: electrostatic spraying, painting, and some sound barrier manufacturers such as ring Sheng traffic equipment has its own spray line, so the price will not be too high, there is sound barrier filler, rock wool and centrifugal glass wool, and bulk density also There will be differences. 4, the selection of sound barrier shape
Q:What is the noise reduction barrier of industrial noise What are the advantages?
At present, the noise has become a major environmental pollution, the sound environment of the building more and more people's attention and attention.
Q:Double sound barrier, sound insulation material, the average amount of sound is how much?
Louver-type sound barrier can reach the noise reduction of 15-20 dB) Metal micro-acoustic sound barrier can achieve noise reduction of 18-25 dB)

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