Lignin and Bagasse Ash Modified Bitumen for Pothole Repair

Abstract: Potholes are a major form of distress in flexible pavements, affecting road safety, ride quality, and maintenance costs. Due to weak bonding, traffic loading, and moisture damage, traditional pothole repair techniques frequently fail. The use of bio-based additives to improve the sustainability and performance of asphalt binder has been investigated recently [1]. It has been reported that lignin, a naturally occurring biopolymer derived from biomass, enhances the stiffness and high-temperature stability of asphalt binders [2]. Additionally, sugarcane bagasse ash has been studied as a filler that can improve the durability and strength of asphalt mixtures [3]. By assessing binder characteristics like penetration, softening point, ductility, and viscosity, this study investigates the possible application of bitumen modified with lignin and bagasse ash for pothole repair.

Keywords: Pothole Repair; Modified Bitumen; Lignin; Sugarcane Bagasse Ash; Sustainable Pavement.