Architecture and public works is one of the largest pillar industries in the French economy. This area not only created opportunities for the development of the construction materials industry, but also added brilliance to the commercial and education departments and research institutes of French industrial research. Recently, the reporter learned from the French Ministry of Science and Technology that Colas, which is engaged in the construction and maintenance of highways in France, has cooperated with the French National Institute of Technology to develop a new high-performance highway sound insulation panel. The noise absorption performance of this soundproof wallboard has reached an unprecedented level. According to the configuration of the wall, the noise absorption efficiency is higher by 30% to 50% than the most efficient sound insulation board. Therefore, the National Institute of Technology, which invented this achievement, won the 2003 Siemens Practical Research Award.
It is reported that this achievement is based on the acoustic theory of irregular objects on the sound interference and based on a large number of experimental analysis and obtained. Studies have shown that the geometry of objects plays a significant role in reducing noise. To reduce noise, we must not only select good materials, but also apply acoustic principles. Resonance devices with “broken shapes†or “laces†are more effective than conventional smooth geometry systems in reducing noise.
Since it is difficult to produce irregularly shaped articles using general industrial production processes (such as casting processes), the challenge for the research team is to find a material form that can absorb noise, optimize its noise performance, and at the same time be able to apply In the model injection molding process production.
The research team produced a 4×4 m sound insulation wallboard sample. The surface morphology of the soundproof wallboard is very complex, with truncated cones and truncated pyramids, repeated arrangement, and the use of wood concrete materials. Tests conducted in accordance with current standards in echogenic rooms have shown that this new soundproofing material board can be classified as “highly sound-absorbing†material, and its noise-absorbing performance is unprecedented.
This high-performance sound-insulating wallboard is very suitable for the distribution of soundproof walls in expressways, highways, material stores, and underground tunnels with high traffic volumes. It is suitable for the construction of soundproof walls at high-speed railways and at airports with frequent landings and landings. The design of the wallboard is also very easy to incorporate into various local landscapes. It is believed that this new product will soon be used in practice to protect the residents of the road and railway from noise.
It is reported that this achievement is based on the acoustic theory of irregular objects on the sound interference and based on a large number of experimental analysis and obtained. Studies have shown that the geometry of objects plays a significant role in reducing noise. To reduce noise, we must not only select good materials, but also apply acoustic principles. Resonance devices with “broken shapes†or “laces†are more effective than conventional smooth geometry systems in reducing noise.
Since it is difficult to produce irregularly shaped articles using general industrial production processes (such as casting processes), the challenge for the research team is to find a material form that can absorb noise, optimize its noise performance, and at the same time be able to apply In the model injection molding process production.
The research team produced a 4×4 m sound insulation wallboard sample. The surface morphology of the soundproof wallboard is very complex, with truncated cones and truncated pyramids, repeated arrangement, and the use of wood concrete materials. Tests conducted in accordance with current standards in echogenic rooms have shown that this new soundproofing material board can be classified as “highly sound-absorbing†material, and its noise-absorbing performance is unprecedented.
This high-performance sound-insulating wallboard is very suitable for the distribution of soundproof walls in expressways, highways, material stores, and underground tunnels with high traffic volumes. It is suitable for the construction of soundproof walls at high-speed railways and at airports with frequent landings and landings. The design of the wallboard is also very easy to incorporate into various local landscapes. It is believed that this new product will soon be used in practice to protect the residents of the road and railway from noise.
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