<![CDATA[The rapid development of road infrastructure in Indonesia has increased the demand for construction materials while intensifying environmental challenges. This study examines the potential of nickel waste a byproduct of nickel smelting widely available in Indonesia as a partial replacement for coarse aggregate in porous asphalt mixtures. The research evaluates both the technical performance and environmental implications of this substitution, contributing to sustainable construction and circular economy discussions. Laboratory tests assessed parameters such as stability, flow, void content, and the Marshall Quotient, following Bina Marga and SNI standards. Results indicate that nickel waste can satisfy several technical requirements, achieving an optimal asphalt content of 5.5%, which also supports waste reduction and potential cost savings. However, because nickel slag contains heavy metals, effective environmental risk management such as leaching control and stabilization is essential. The findings suggest that incorporating nickel waste is not merely a technical adjustment but a strategic move toward resource efficiency, industrial symbiosis, and sustainable infrastructure governance. By reclassifying industrial waste as a productive input, this research highlights opportunities for policy reform, procurement innovation, and collaborative efforts among government, industry, and academia. Ultimately, the study concludes that adding nickel waste to porous asphalt mixtures can enhance road performance, minimize ecological impacts, and advance Indonesia’s green infrastructure agenda, provided that appropriate regulatory and environmental safeguards are implemented.]]>
