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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

thick asphalt pavement

Language : PIARC Road Dictionary / English
Theme : Roads Construction Flexible and Semi-Rigid Pavements
Definition : Structure including a bituminous surface layer on bitumen-bound aggregates laid in one or two courses (base layer and subbase layer). Note: the thickness of these two courses varies from 15 to 40 cm.

Asphaltoberbau

Language : PIARC Road Dictionary / German
Theme : Straßen Bau Flexible und halbstarre Fahrbahnbefestigungen
Definition : Oberbau mit bituminöser Deckschicht, die in einer oder zwei Schichten aus bitumengebundenen Gesteinskörnungen (obere und untere Tragschicht) verlegt ist. Die Dicke dieser beiden Schichten variiert zwischen 15 und 40 cm.