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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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  4. Term of the Dictionary | pumping

Term of the Road Dictionary

pumping

  • Language : PIARC Road Dictionary / English
  • Theme : Operations Asset Management and Maintenance Maintenance
  • Definition : Phenomenon by which water entrapped at the interface between a concrete slab and its subbase layer is ejected by the deflection of slab edges as heavy vehicles pass over. Note: in some cases fines from within the pavement structure are entrained with the ejected water, which in time may result in cavities under the slab.

Pumpen

  • Language : PIARC Road Dictionary / German
  • Theme : Betrieb Erhaltung und Instandhaltung (syn. Asset management AT) Instandhaltung (syn.Instandsetzung CH)
  • Definition : Phänomen, bei dem Wasser, das im Raum zwischen einer Betonplatte und ihrer Unterlage gefangen ist, durch die Verformung der Plattenecken infolge schwerer, darüberfahrender Fahrzeuge herausgepresst wird. In einigen Fällen wird Feinkorn aus dem Fahrbahnbefestigungskörper mit dem herausgepressten Wasser mitgerissen, was mit der Zeit zu Hohlraumbildung unter der Platte führt.