Published: 2024-02-01 10:48:50
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The sound barrier of viaduct and viaduct made of foam aluminum sound absorbing board can effectively reduce the low frequency noise produced by automobiles. The thickness of the foam aluminum sound absorption board is 10mm, the back is set with a 60mm thick cavity, and the general total height is 2800mm, which is twice the noise reduction effect of the sound barrier of the ordinary louver sound absorption board.
The sound absorption and noise reduction wall of highway and river tunnel is made by using 10mm thick perforated aluminum foam sound absorption board, and 60mm thick cavity is set at the back, which can effectively absorb low-frequency noise generated by automobiles. Aluminum foam material does not absorb moisture, still maintains a good sound absorption and noise reduction effect, and aluminum foam side wall can absorb impact kinetic energy and vibration waves, play a role in protecting the inner wall of the tunnel. Aluminum foam does not corrode, does not burn, and is safe to use.
The sound absorption and noise reduction wall of the river bottom tunnel is made by a 10mm thick perforated aluminum foam sound absorption board, and a 60mm thick cavity is installed at the back. The humidity in the undersea tunnel is high, the aluminum foam material does not absorb moisture, and still maintains a good sound absorption and noise reduction effect, and the aluminum foam side wall can absorb the impact kinetic energy and vibration waves to protect the inner wall of the tunnel. The surface of the foam aluminum sound-absorbing board is treated by nickel plating and plastic spraying, which can resist seawater corrosion.
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【nickel-molybdenum foam】
【copper foam】
20mm thickness 60ppi copper foam shown in video.
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