Validation of Gyration Level for Superpave Gyratory Compactor (SGC) for Mix Design and Control of Airport Asphalt Mixtures

This report validates gyration levels for SGC to achieve volumetric properties equivalent to 50 and 75 blows with a Marshall hammer for airport asphalt mixtures. ​The study analyzed more than 50 mixtures from various climatic zones, incorporating diverse aggregate types, asphalt binders, and mixture properties. The findings confirm FAA specifications for P-401 and P-403 mix designs, supporting the existing FAA framework and ensuring reliable mix designs for airfield pavements servicing aircraft +/- 60,000 lb. ​​The report highlights differences in compaction methods, aggregate breakdown, and laboratory variability, emphasizing the consistency of SGC compaction across laboratories