Validation of a Performance-Based Mix Design Method for Porous Friction Courses
Porous Friction Course (PFC) mixtures are designed with an open aggregate structure to yield high inplace
air voids (i.e., typically between 15 and 20 percent). This allows rainwater to drain horizontally through
the layer toward the edge of the pavement
structure, thereby improving pavement surface friction.
The TRB National Cooperative Highway Research Program's
NCHRP Web-Only Document 305: Validation of a Performance-Based Mix Design
Method for Porous Friction Courses is designed to
assist state highway agencies in implementing the proposed
performance-based mix design procedure, verify if the thresholds proposed in the procedure could be
achieved, and refine the procedure if needed.
This Summary Last Modified On: 10/6/2021