UTC 2022 Funding - Cycle 2 Research Projects

Project No.: CY3-LSU-01
Title: Asphalt 3D Printing for On-Demand Transportation Infrastructure Construction and Repair
Performing Institution: Louisiana State University
Principal Investigator: Ali Kazemian and Mostafa Elseifi, Louisiana State University
Start and Anticipated Completion Dates: 01/01/2026 to 01/15/2027
Abstract: There is a growing need for more advanced construction methods for asphalt pavements in the U.S., driven by aging infrastructure, increasing traffic demand, and constrained maintenance budgets. Accelerated and cost-effective construction techniques have the potential to reduce project timelines, lower labor costs, and minimize downtime, making them essential for meeting the nation’s infrastructure goals. Additionally, asphalt composites are known to deteriorate over time due to factors such as repeated traffic loading, oxidation, loss of volatiles, and environmental exposure. This deterioration results in increased surface stiffness, the formation of cracks, stripping, aggregate loss, and development of potholes. This study responds to these needs by designing and evaluating a novel asphalt 3D printing methodology (PAVE3D) and demonstrating its practical feasibility for transportation applications. The proposed technology is mainly intended for pavement construction and repair applications including maintenance applications (e.g., crack sealing, and patching). With PAVE3D, customized pavement slabs for roads or bridges can be fabricated on-demand, or the geometry of existing potholes can be precisely scanned and filled with printing material. However, there exists a significant knowledge gap regarding the rheological requirements of asphalt-based binders suitable for 3D printing, as well as the key considerations involved in designing printable asphalt mixtures.
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