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PFC 342

Paving Checklist

Item 342 – Porous Friction Course (PFC)

Construction Tips:

  • Production: Multiple cold feed bins for same coarse aggregate, watch max temperatures, drain down, storage, develop a drum cleanout SOP for switching to specialty mixes. Caution when switching mixes same shift, fibers, lime?, lower production rates, verify aggregate supplier’s capacity to produce for entire project.
  • Trucking: tight tarps, truck bed cleanup prior to loadout. Consider impact of long haul on temperature.
  • MTV/Shuttle Buggy: Recommend dumping initial half-loads to prevent rapid cooling, use dump head not pickup head.
  • Paving: Don’t tack vertical edges between PFC mats, limit to peak paving season, outside edge joint treatment, drainage, curb and gutter, superelevation, rapid temperature loss.
  • Compaction: Don’t vibrate, no rubber tire, rapid cooling, steel wheel rollers on static mode/spray nozzles well maintained, wheel release agent/soap, cover the mat quickly, don’t move equipment on fresh PFC, less roll down.
  • Handwork: Minimize handwork due to rapid cooling and texture differences.
  • Testing (QC/QA): Water flow test in lieu of cores.
  • HG Binder: Not recommended – use 344 Superpave.
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