Term of the Road Dictionary

porous asphalt

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Materials Mixed Materials
  • Definition : Asphalt mixture of the gap-graded type designed to have a very high content (20 % by volume or more) of interconnected voids so as to facilitate the passage of water [CEN].
  • Abbreviation : PA
  • Synonyms : draining asphalt (US) / permeable friction course (US) / pervious coated macadam [obsolete]

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