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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

narrow grading

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Materials Soils and Aggregates
  • Definition : Characteristic of an aggregate or a soil in which the sizes of the different particles are included within narrow limits.

enge Korngrößenverteilung

  • Language : PIARC Road Dictionary / German
  • Theme : Straßen Baustoffe Erdreich und Gesteinskörnung
  • Definition : Eigenschaft eines Mineralstoffs oder eines Bodens, bei dem die unterschiedlichen Korngrößen innerhalb enger Grenzen liegen.