Biomass materials in diagnosis and repair strategies for asphalt pavement damage

Highway asphalt pavements are subject to mechanical stress, deformation, and environmental interactions that lead to damage such as ruts, cracks, water infiltration, and depressions. The role of biomass materials in diagnosing and repairing these damages is explored in this research, emphasizing the integration of advanced analytical methods and bio-based repair technologies. The research begins by analyzing the mechanical and environmental factors contributing to pavement degradation, with a focus on the potential of biomass additives to mitigate these effects. Using the Analytic Hierarchy Process (AHP), road condition indices and damage metrics were quantitatively assessed before and after repair on a section of the Shanghai-Suzhou Expressway. Post-repair results demonstrated a 30-point reduction in the road damage index, highlighting the effectiveness of biomass materials in enhancing pavement functionality and durability. This study underscores the value of sustainable material principles and diagnostic frameworks for optimizing repair strategies. The findings provide actionable insights into leveraging bio-based materials to improve pavement engineering practices and support sustainable infrastructure maintenance.