Reclaimed Asphalt Pavement

Research in reclaimed asphalt pavement focuses on the effective reuse of aged asphalt materials in new pavement construction. Investigations explore the mechanical properties of reclaimed asphalt pavement (RAP) and its interaction with virgin binders and aggregates. Studies examine methods for rejuvenating aged binders within RAP, including the use of chemical additives and warm-mix asphalt technologies, to restore performance characteristics. The research also addresses the development of sustainable asphalt mixtures that incorporate high percentages of RAP while meeting stringent engineering standards for durability and safety. This includes evaluating the long-term performance and environmental impact of such recycled materials.

This area of study holds significant relevance for Arkansas's infrastructure development and economy. The state's extensive network of roads and highways, coupled with ongoing construction and maintenance projects, generates substantial quantities of RAP. Research into its effective recycling contributes to reducing the demand for virgin materials, conserving natural resources, and lowering the environmental footprint of road construction. By enhancing the performance and usability of RAP, this work supports the state's transportation sector and promotes cost-effective infrastructure solutions.

The research is inherently interdisciplinary, drawing upon expertise in materials science, civil engineering, and sustainable materials. Connections exist with studies in soil stabilization, asphalt binder modification, and the utilization of agricultural waste for material enhancement. This work involves collaboration across institutions to advance the understanding and application of recycled materials in civil infrastructure projects.