Mitigation of Plastic Flow and Delamination at High-Speed Exits

This report examines slippage failures and interface delamination on runway pavements near high-speed exits, where aircraft braking and turning create multi-axial stresses. The study used laboratory testing and mechanistic modeling to evaluate asphalt mixture stability and interface bond strength under realistic conditions. Results define shear stress ratio thresholds and performance criteria for FAA P-401 and P-404 mixes. Guidance on overlay thickness and tack coat practices is provided to reduce failure risk. The recommendations aim to improve pavement durability and safety at airports.