Effect of in-situ rejuvenation on porous asphalt durability and ravelling

Abstract

This study evaluated the durability of in-situ treated porous asphalt pavement surface (ZOAB) layers using surface treatment agents, both with and without rejuvenating effects. Field cores were extracted from four highway sections before and after treatment to analyze their impact on durability and raveling resistance. Fourier Transform Infrared Spectroscopy showed that the application of these agents led to reduction of carbonyls and sulfoxides without the formation of additional chemical functional groups. Further, microcomputed tomography revealed no significant changes in void distribution or material phases. The rotating surface abrasion test demonstrated that treated sections exhibited 67–82% lesser aggregate loss compared to control, attributed to the effects of applied treatment agents. Overall, the study highlighted that in-situ surface treatments, both rejuvenating and non-rejuvenating, are promising approaches for sustainable pavement maintenance.