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In this project, the research team evaluated the performance of
Permeable Friction Courses (PFC) over time and compared it against
other types of wearing surface pavement layers. Several pavement
sections including Asphalt Rubber (AR) PFCs, Performance Graded
(PG) PFCs, and dense-graded Hot Mix Asphalt (HMA) were monitored
over a four-year period. Non-destructive on-site measurements
included noise, drainability, texture, friction, and skid. The
change of these variables with time as well as the influence of
traffic, binder/mixture type, aggregate classification, and
climatic region was evaluated. Accident data were also gathered and
analyzed on a more comprehensive number of pavement sections across
Texas. All of this information was compiled in database format. In
addition, when performance issues were identified, field cores were
acquired for forensic evaluation. Results from the multiyear
performance data analysis and previous research were used to
produce guidelines and recommendations to improve the design,
construction, and maintenance of PFCs.
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