I don't know if you have now discovered that due to the greenhouse effect, the extreme climate has been presented more and more frequently in recent years, especially the flood problem, and it is often in news reports that it should promote rainwater penetration in many cities.
It itself provides porosity data, which has the characteristics of low thermal conductivity, good thermal insulation and high air permeability, so it has certain functions of sound absorption, noise reduction and dust removal. From the perspective of sound absorption and noise reduction, permeable bricks have their unique porosity. The sound-absorbing structure causes air movement in the air hole or open space when the surface wave of the impact sound is hit, and the air velocity close to the surface of the hole wall is slower.
When viscous resistance due to conflict and air movement ear sound emission, part of the sound energy is converted into thermal energy, which attenuates the sound energy. Together, the heat formed by the heat exchange between air and holes in the wall can also be lost. Attenuates the sound energy. The ventilated bricks and the front and back bricks are closely connected ventilated micropores that can absorb noise and are ideal sound absorption data.
Not only can it help alleviate the many problems in permeable bricks , but also because it is a goal to deal with some abandoned, harmless, and environmental protection, not only can reduce environmental pollution, reduce environmental load, maintain and improve the environment, but also save resources and benefit future generations Offspring.