Aggregate-Binder Compatibility

This research area investigates the fundamental interactions between asphalt binders and aggregates, the primary components of asphalt pavements. Researchers examine how different binder properties, such as viscosity, stiffness, and chemical composition, influence their adhesion to various aggregate types. Studies explore the effects of temperature, aging, and the presence of additives or modifiers on these interactions. Key areas of focus include understanding the mechanisms of adhesion, evaluating the long-term performance implications of binder-aggregate compatibility, and developing methods to predict and enhance pavement durability. Research also addresses moisture susceptibility, a critical factor affecting pavement lifespan and performance in diverse environmental conditions.

The performance of roads and highways is a significant concern for Arkansas, impacting the state's economy through efficient transportation of goods and people, particularly for its agricultural and manufacturing sectors. Improving the compatibility between asphalt binders and locally sourced aggregates can lead to more durable and cost-effective pavement construction and maintenance. This research contributes to extending the service life of public infrastructure, reducing repair costs, and minimizing disruptions to transportation networks across the state. Understanding these material interactions is essential for optimizing the use of regional resources and ensuring the resilience of Arkansas's transportation infrastructure.

This field draws upon principles from materials science and pavement engineering. Researchers collaborate across institutions within Arkansas to address complex challenges in road construction materials, asphalt emulsion performance, and pavement preservation techniques. The work also informs advancements in warm mix asphalt technologies and the development of asphalt mixtures with improved performance characteristics.