Yokohama Rubber to verify the "multi-functional flexible pavement materials," Noise Reduction

Yokohama Rubber Zama in Kanagawa Prefecture, the city government before the city built the road on the 17th line of test used to reduce the road noise and road and Japan to jointly develop a "multi-functional flexible pavement materials," the effect of noise reduction verified. According to the determination of the scene, with the existing allocation of dense asphalt road surface, the speed at 40km / h speed under the so reduce the noise about 10dB (A) the effect of noise reduction, equivalent to the volume of traffic was reduced to about 1 / 10. In the past the quiet road surface (of the road drainage) in the same speed under the effect of noise reduction is only 2 ~ 3dB (A).

"Multi-functional flexible pavement" by the use of discarded tires to smash into the rubber powder and silica sand for the structure of the material, the use of polyurethane adhesive resin and hardening technology. The effect of noise was so big because of internal roads and more space (porosity of 20 to 30%), has the flexibility to reduce tire noise generated by (the sound vibration) and also have a good sound-absorbing effect. But also with a variety of other functions, it's because of the other characteristics of flexibility, so the vehicle was crushed ice, frozen road is not easy to make. Due to the high porosity, good drainage. When they encounter a rainy day can prevent the road is wet and slippery, but also to prevent splashing water.

The construction of multi-functional flexible materials in the road "Japan porous pavement study will be flexible" (Civil Engineering, Civil Engineering Research Center, 5 rubber private enterprises and 7 private enterprise road together to study the composition of the) research The results, based on the original slip-resistant and wear-resistant and durable, and other issues were substantially improved. The method is divided into road construction, the site will be 1m square sheet of stitching on the road in the plate-like and old asphalt pavement at the scene the same material will be mixed together in the laying of a direct road construction on the site-2 method. Yokohama Rubber developed by the latter.