Advancing Sustainability and Durability in Asphalt: Assessing the Role of Low-Carbon Sulfur Polymer Modifiers and Reclaimed Asphalt Pavement

This research aims to assess the environmental and mechanical benefits that sulfur-modified polymers and reclaimed asphalt pavement (RAP) can bring to asphalt mixtures’ pavement sustainability and performance. By conducting both the Indirect Tensile Cracking Test and the Hamburg Wheel Track Test, the study will assess the resistance of the sulfur-modified mix to aging and cracking. RAP, up to 25% by weight, will be evaluated for its potential to significantly lower the carbon footprint of asphalt production by conserving virgin materials and lowering CO₂ emissions. The research aims to optimize binder performance by exploiting the crosslinking properties of sulfur to enhance elasticity, low-temperature performance, and resistance to both UV and thermal aging. The results will show practical insight into developing more durable pavements suitable for high-traffic and demanding environmental conditions, considering the requirements for sustainability through circular material usage. This research will guide the industry in implementing low-carbon advanced asphalt technologies that will meet governmental and environmental objectives.