Abstract
The main objective of this study was to evaluate the applicability of the “Quiet Pavement” concept under Florida’s unique weather and field conditions. The long-term field performance of three open-graded friction courses (OGFCs): FC-5 with PG 76-22 polymer-modified asphalt (PMA) binder (Control), FC-Q with ARB-12 binder, and FC-Q with PG 76-22 PMA binder was assessed using 16 years of comprehensive pavement data, including tire/pavement interaction noise (OBSI), rutting, cracking, raveling, friction, macrotexture (MPD), and ride quality (IRI). Results showed that FC-5 exhibited the highest initial noise levels and experienced the most severe surface deterioration, with crack ratings reaching failure thresholds and extensive raveling over time. FC-Q ARB-12 demonstrated stable, long-term performance, maintaining consistently lower noise, moderate macrotexture growth, and superior resistance to surface distress potentially because of its higher binder content. FC-Q PMA delivered moderate performance with more variability in noise, IRI, and surface distress indicators, falling between FC-5 and FC-Q ARB-12 with regard to performance. The observed performance justifies the adoption of the Quiet Pavement concept for Florida highways as an alternative of the traditional FC-5 mixture for reduced traffic noise and improved durability. The study also underscores the importance of ongoing monitoring in maximizing the benefits and lifespan of OGFC surfaces. Based on these results, FDOT has extended the Quiet Pavement study with new test sections using a finer 9.5 mm NMAS, seeking further improvements to the FC-Q mix design for even better performance in Florida’s challenging environment.
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