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PIARC (World Road Association), founded in 1909 and comprising 125 member governments from all over the world, is the global forum for exchange of knowledge and experience on roads, road transport policies and practices. With consultative status to the Economic and Social Council of the United Nations, the Association is contributing to a stable and sustainable global development of the road and transport sector.

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Term of the Road Dictionary

anticapillary layer

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Design Pavements
  • Definition : Protective bottom layer with no fines, designed to prevent capillary rise of water from the subgrade soil or from underlying layers.
  • Synonyms : dampproof layer

wasserundurchlässige Schicht

  • Language : PIARC Road Dictionary / German
  • Theme : Straßen Entwurf Fahrbahnbefestigungen
  • Definition : Die schützende untere Lage ohne Feinanteile, hergestellt zur Verhinderung vom Untergrundboden und von darunter liegenden Schichten aufsteigenden Kapillarwassers.