With this process, originally developed in the USA, a special device (BumpCutter) is used to cut narrow grooves, e.g. 3 x 3 x 20 mm, in concrete or asphalt pavements, thereby improving the drainage of water between tires and the roadway surface.
With grooving, hazardous areas due to a lack of water drainage, e.g. around the change of gradient of concrete roadways, can be removed and driving safety around curves and when braking can also be improved.
Uneven vehicular-use and air traffic surfaces made from concrete can have a massive impact on driving and riding comfort, as well as traffic safety.
Grinding is utilized to reproduce and/or improve evenness, skid-resistance, and drainage, whereby the uneven concrete or asphalt surfaces are cut down to a precisely defined level.
Protective Diamond Grinding Technology
Equipped with a 1.2m wide shaft with diamond blades the BumpCutter will carefully grind down concrete surfaces and aggregate particles with mimimized strain to the subbase. Contamination at the worksite and the adjacent areas is avoided through constant suction of the grinding and cutting slurry directly around the shaft and the pumping into disposal vehicles. This helps protect the environment.
Reduction of Tire-pavement Noise
Another effect of the grinding process is the reduction of tire-pavement noise by about 2 dB (A) compared to the average rolling noise emission of concrete roadway pavements that were separated from burlap during production.
The precisely tailored removal of concrete via grinding technique can be performed on roadways, e.g. as an upstream operation before the application of POSSEHL EP-GRIP, a premium surface treatment with reactive resin binder. Noise reduction can be optimized by the combination of high-performance surface treatment and level improvement. With EP-GRIP 1/3 (120 km/h) the tire-pavement noise can be lowered by 5 dB (A).