According to EN ISO 13473, road pavement texture plays a role in determining parameters such as noise emission by the tire contact patch, skid resistance between tire and road surface, rolling resistance and tire wear. Skid reistance on wet roadways is also influenced by texture.
A road surface's texture, or roughness profile, is determined by the shape, size and mix of the aggregates used to construct the road.
The wavelength and amplitude of the bumps on the highway surface are used as a measure of the texture. If the wavelength lies in the range of from 0.5 to 50 mm, one speaks of macro-texture.
Our ARGUS® multifunction measurement system as well as our skid resistance measurement system SKM can be used to register macro-texture wherever necessary. This is done with the aid of a rapid-pulse laser probe used to determine roughness and allowing the following measurements/evaluations:
- Registration of macro-texture in the wavelength range from 0.5 mm to 50 mm
- 50,000 scans per second at a resolution of 0.025 mm
- Calculation of mean texture depth (MTD) according to DIN EN ISO 13473