France has developed high-performance highway sound insulation wall panels

Colas, a French company engaged in highway construction and maintenance, cooperated with the French National Institute of Technology to develop a new high-performance highway sound insulation panel. This new sound-absorbing wallboard achieves an unprecedented level of noise absorption. According to the configuration of the wall, the noise absorption efficiency is even higher by 30% to 50% than the existing most efficient soundproof board.
Because of this invention, the National Institute of Comprehensive Science and Technology recently won the 2003 Siemens Practical Research Award. This achievement was based on the theoretical research and experiments of many irregular objects. Studies have shown that the geometry of objects does play a large role in reducing noise. Therefore, a resonant device having a "broken shape" or a "lace-like shape" can have a greater effect of reducing noise than a generally smooth geometrical system.
Since it is difficult to produce irregularly shaped articles using general industrial production processes (such as casting process), the research team produced a soundproof wallboard sample of 4 meters by 4 meters. The surface morphology of the sound insulation wallboard is very complex. Truncated cones and truncated pyramids, repeating arrangement, and using wood-concrete materials.
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.
Faced with the recovery of the market, facing the development of the western region, Guangxi Guilin Mining Machinery Plant seized the opportunity to continuously improve the scientific and technological content of products and improve the product quality system. This year's 4R-type series of flour mill sales and market share ranked first in the country. The production efficiency has been continuously improved and laid the foundation for the good start in 2004.