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Construction and Maintenance Practices for Permeable Friction Courses (2009) / Chapter Skim
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Pages 73-78

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From page 73...
... When production temperatures of the PFC are reduced, all of the internal moisture within the aggregates is not removed. Moisture remaining within the aggregates after plant mixing increases the potential for the asphalt binder stripping from C H A P T E R 1 0 Performance of Permeable Friction Courses
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From page 74...
... . Based upon a 1998 survey, they stated that highway agencies that had experienced good performance with OGFCs were utilizing polymer-modified asphalt binders and relatively high asphalt binder (by using fibers and/or relatively open gradations)
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From page 75...
... Similar to smoothness, no specific literature was found that followed the frictional properties of a PFC pavement layer from construction till the end of the service life. The literature does suggest that the frictional characteristics of PFC layers are relatively low (but acceptable)
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From page 76...
... Because of the high percentage of air voids associated with PFC layers, water will readily drain from the pavement surface into the interstitial voids of the PFC layer. Water that drains into the PFC layer is not available to be trapped between the vehicle tire and pavement surface in the form of water films, thus improving wet weather friction (15, 19, 20)
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From page 77...
... Because of the significant amount of macrotexture produced within PFC pavement surfaces, PFC layers will maintain adequate frictional characteristics even after becoming clogged (15)
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From page 78...
... (15) , the Dutch state that PFC layers also reduce noise levels by absorbing some of the noise emitted by vehicles (31)
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Key Terms

  • asphalt binder
  • pfc layers
  • pfc layer
  • mix design
  • friction courses

  • pfc mixes
  • pavement surface
  • porous asphalt
  • wet weather
  • asphalt binders

  • aggregate size
  • permeable friction
  • noise levels
  • service life
  • maximum aggregate

  • cross slope
  • pfc pavements
  • tack coat
  • pfc mixtures
  • binder content

  • modified asphalt
  • coarse aggregate
  • air voids
  • friction course
  • underlying layer

  • air void
  • wearing layers
  • rain events
  • pfc mixture
  • ogfc mixes


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