“Performance Evaluation of High Recycle Asphalt Pavement Content: A Comprehensive Analysis”

Reclaimed asphalt pavement (RAP) has become a viable and sustainable pavement recycling option. Pavement engineers are investigating a variety of technologies, including warm mix asphalt (WMA) technology and alternative materials, like reclaimed asphalt pavement (RAP), in the construction of pavements due to worries about global warming and environmental pollution, rising energy costs, and limited financial resources. Repurposing old asphalt materials, RAP presents a tempting proposition as the infrastructure sector grapples with cost-effective alternatives and environmental issues. It is possible to reduce the need for virgin materials and minimize waste disposal by careful processing and mixing RAP into fresh asphalt mixtures. The paper covers the material characterization of RAP materials, virgin aggregates, and VG-30 bitumen. Samples are made for many tests, such as Marshall stability, indirect tensile strength (ITS), and tensile strength ratio (TSR), and mix designs are created for the Marshall mix design process. Results suggest that the mechanical properties and durability characteristics of asphalt mixes are greatly impacted by the addition of a high RAP concentration. The study balances stability, air voids, voids in mineral aggregate (VMA), and voids filled with asphalt (VFA) to determine the ideal binder amount for each RAP percentage. All things considered, this study advances knowledge about sustainable pavement building techniques and lays the groundwork for the successful integration of RAP into asphalt mixes, opening the door to a more economical and ecologically conscious road construction industry.