Bereitstellung einer fachgerechten Bewertung von gegrindeten Oberflächentexturen auf Betonfahrbahnen in der ZEB - Berührungslose Ermittlung der Längsebenheit

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Since the introduction of the Technical Test Regulations for the contactless measurement of pavement surfaces [1,2], the assessment of longitudinal evenness requires determination of the true longitudinal height profile. So far, only the High-Speed Monitoring (HRM) method is suitable for measuring the true longitudinal height profile. Comparable methods used, for example, in other countries, such as an inertial profilometer (distance measurement combined with an acceleration sensor), are currently not approved. However, the HRM method in its current form is not suitable for deviating surface structures such as grinding textures. Due to material removal, ground surfaces develop a longitudinal, alternating rib-groove pattern, where minor local deviations of repeatedly sampled points can lead to significant deviations in the relative height measurements of the laser sensors. Additionally, even small angles between the longitudinal structures and the driving direction of the measuring vehicle can imprint an artificial unevenness. Therefore, the accuracy of measurement systems based on contactless measurement can be strongly negatively affected by grinding textures. The objective of…

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