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Abstract. Sealing or filling cracks in pavement surfaces has been a common pavement maintenance technique adopted by many agencies. Mastic has been a common material implemented in these activities due to its flexibility, adhesion, and strength properties. In cold regions, the presence of freeze and thaw cycles contributes to the generation of severe transverse cracks that impact ride quality. Therefore, the main objective of this study is to evaluate the effect of transverse mastic sealant on pavement roughness as an indicator of ride quality on multiple pavement surfaces. Field performance data from a cold climate and low-traffic roadway was obtained before and after mastic application and analyzed using hierarchical cluster analysis. The main results suggest that this repair strategy can be effective in improving the roughness of pavements in cold regions. Nevertheless, the magnitude of the given benefit is dependent on the pre-existing roughness condition and surface type.
