Project Description: 

This project investigates the engineering properties and field performance of Fiber-Reinforced Asphalt Concrete (FRAC) specifically optimized for high-durability pothole repair and structural patching.

Outputs:

The project will produce original research on the integration of advanced fiber additives (e.g., Forta-Fi fibers) into asphalt mixtures, specifically focusing on mechanical performance, structural optimization, and long-term asset preservation. This research will fill a critical gap in current engineering literature regarding the use of high-strength synthetic fibers to enhance the durability and load-bearing capacity of asphalt pavements. The research will identify the optimal fiber types and volumetric proportions to achieve peak results in terms of rutting resistance, fatigue cracking reduction, and freeze-thaw durability. Furthermore, the project will quantify how these fibers reduce the total labor and material life-cycle costs of asphalt by extending performance intervals and minimizing the fiscal burden of frequent maintenance.
The project will develop a novel asphalt mix design methodology that optimally integrates fiber reinforcement and high-efficiency construction protocols. This method will be standardized for fiber-reinforced asphalt concrete, utilizing specific fiber dosages to enhance material properties such as ductility, elasticity, and resistance to thermal-induced pavement distresses. A detailed technical process for mix preparation, mechanical compaction, and rigorous quality control will be established, ensuring a uniform distribution of fibers within the mixture to achieve consistent structural performance across diverse operational environments and varying traffic loads.
Finally, this project will develop an integrated pavement design system that combines fiber-reinforced asphalt with reclaimed materials to create a high-efficiency construction framework. This system focuses on maximizing the utility of existing material assets to ensure the highest standards of roadway longevity and infrastructure reliability across the road network.

Outcomes/Impacts: 

The research will produce fiber-reinforced asphalt mixtures that exhibit significantly improved resistance to rutting, thermal cracking, and freeze-thaw cycling. The integration of high-performance additives, such as Forta-Fi fibers, will increase the asphalt’s tensile strength, leading to durable pavements that require fewer interventions over their lifecycle.
•    Infrastructure Longevity: By minimizing the need for frequent maintenance and reactive repairs, fiber-reinforced asphalt has the potential to extend the service life of pavement patches and overlays by 20–30% compared to conventional mixtures. This is particularly critical in regions experiencing high-stress operational conditions and heavy traffic loading. 
•    Operational Efficiency: The project aims to improve the efficiency of transportation networks by developing high-durability asphalt solutions that minimize traffic delays caused by frequent road repairs. Reducing the volume of required maintenance activities decreases the presence of construction zones, thereby improving safety and traffic flow.
•    Life-Cycle Cost Reduction: The adoption of fiber-reinforced asphalt mixtures will result in a lower total economic burden across both the construction and maintenance phases. By integrating recycled materials alongside fiber additives, the project develops a resource-efficient construction framework that reduces the financial costs associated with raw material extraction and hauling.
•    Fiscal Responsibility: The project will provide a comprehensive cost-benefit analysis showing that while fiber-reinforced asphalt involves a slightly higher initial material investment, it leads to significant long-term fiscal savings due to reduced repair frequency and lower overall maintenance expenditures.
•    Standardization and Scalability: The project will result in the standardization of mixing, testing, and application protocols for fiber-reinforced asphalt. This ensures the technology is scalable for large-scale highway rehabilitation and urban infrastructure projects.
•    Technical Benchmarking: The research provides valuable field data on the structural performance of reinforced asphalt, informing future transportation policies and engineering paving standards.
•    Policy and Regulatory Recommendations: The research will establish robust protocols for assessing material performance under various mechanical and traffic conditions. These findings will inform new regulatory standards and technical recommendations for incorporating high-performance, resilient materials into state and federal roadway construction projects.