Objektiv mätning av ytskador och sprickor i vägytan: vägytemätning med skannande laserteknik

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Thomas Lundberg
Christian Glantz
Thomas Wahlman

As condition measurements carried out on the Swedish national road network currently do not provide a sufficiently comprehensive description of all types of distress, it is difficult to select the sections most in need of maintenance. This lack of information concerns mainly pavement surface condition parameters such as cracking and ravelling. In this study, twenty-seven two-way road sections with varying degrees of pavement surface distress were selected. All sections were identified as "in need of maintenance" by engineers from the Swedish Transport Administration. The sections were objectively measured using a system that covered the full lane width. For comparison purposes, a subjective condition inventory was also done. We found that the objective lane-wide measurements had good repeatability with respect to cracking and ravelling. When comparing the objective and subjective inventories, some sections correlated well whereas some hardly correlated at all. In order for a lane-wide measurement to provide useful information on cracking and other forms of surface distress, our conclusion is that more experience and a better understanding of how to adjust the parameters in the analysis software is needed.

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