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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

loosening of rock

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Construction Earthworks
  • Definition : Non-reversible modifications suffered by the rock as a result of the decrease or increase of one or several stresses near an underground cavity.

Felslockerung

  • Language : PIARC Road Dictionary / German
  • Theme : Straßen Bau Erdarbaiten
  • Definition : Nicht umkehrbare Veränderung, die im Fels als Folge einer oder mehrerer ansteigender oder abnehmender Beanspruchungen in der Nähe eines unterirdischen Hohlraums entsteht.