A performance-based mix design procedure for porous friction course (PFC) is proposed at the conclusion of NCHRP Project 01-55, Performance-Based Mix Design of Porous Friction Courses. The procedure is presented in NCHRP Research Report 877. It requires performance tests to be conducted during the mix design process to evaluate the resistance of a PFC mixture to raveling, moisture susceptibility, and asphalt draindown (with optional tests for cracking and rutting) while maintaining an air void structure that would provide water drainage from the surface.
The objectives of this project are to apply the porous friction course (PFC) performance-based mix design method developed in NCHRP Project 01-55 in full-scale field trials, validate the recommended test parameter thresholds, and refine the design method if needed.
Work is in progress.