Noticias

Highway tunnel, river tunnel, and undersea tunnel due to the increase in the noise caused by the car driving, and the existing noise reduction wall USES porous concrete, porous ceramic and other materials, the sound absorption rate is low, and the moisture absorption expansion, the sound absorption effect is lower.aluminum foam panels for sale noise reduction wall does not absorb moisture, sound absorption rate is high, noise reduction effect is good.
After perforation treatment, the aluminum foam panels for sale sound absorption plate (about 2%) is set with a 60mm thick cavity at the back. The main frequency of sound absorption is about 350HZ. The noise absorption rate of the main noise in the tunnel, i.e. 20-500hz, is up to 60%-90%.



In addition, aluminum foam panels for sale does not absorb water, in the humid environment still has a good sound absorption capacity, maintain a high noise reduction effect.
The aluminum foam panels  sound absorption plate used to make the noise reduction wall of the tunnel is 400mm*600mm*10mm, or 600mm*800mm*10mm. The aluminum foam density is 0.3-0.5g/cm3, and the perforation rate is about 2%.The aluminum foam sound absorption plate shall be lined with a 60mm deep grid groove in the wall, and the aluminum foam sound absorption plate shall be fixed on the surface of the grid groove with adhesive cement or shooting nails.