Abstract
Recent Texas Department of Transportation (TxDOT) Projects 0-5262, 0-5185, and 0-4834 addressed important design, construction, and maintenance issues associated with permeable friction courses (PFCs) that have been increasingly utilized by TxDOT as a surface pavement layer based on safety and environmental benefits. These benefits, that include reduced risk of hydroplaning and splash and spray and improved noise reduction effectiveness as compared to dense-graded hot-mix asphalt (HMA), are derived from high, interconnected air void (AV) contents in PFCs that may contribute to durability issues. To complete the evaluation of PFCs in terms of functionality and safety benefits and durability concerns, performance was tracked over time and compared against that of HMA in this project.
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