ABSTRACT
In seasonal frost regions frost action is a major impact factor on pavement deterioration. Normally frost damage evaluation has been carried out by visual inspection in late spring in order to separate frost action related damages from other pavement damages. The drawback of this methodology is the labour cost, subjective judgement of damages by the personnel and work safety. This approach is not suited for monitoring the condition of on a road net level. Laser scanning has been used for decades as an efficient tool to monitor the rutting development on the road net. The monitoring technique requires a snow and ice free surface to get accurate results. Thus has the use of this technology been limited in the winter seasons. In a few regions longitude profiling measurements have been introduced during for quantify winter conditions. More development is needed in the field of evaluation and techniques to relate the measurements to frost related processes. In this study has data from longitude profiling in four monitoring lines in from summer and late spring been analysed for a number of road sections. Spatial data analysis has been applied to match the acquired measurements in between the monitoring directions along the road and the different seasons. The difference in roughness between the seasons has been used as a measure to identify and qualitative grade the amount of frost action. The methodology and its applicability as an objective frost damage classification tool are discussed.
