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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 | Mohr's envelope

Term of the Road Dictionary

Mohr's envelope

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Materials Material Testing
  • Definition : Curve representing the relation that exists between shear stress and normal stress applied to a given surface of a homogeneous and isotropic solid when shear rupture occurs along this surface. Notes: 1. In its useful range, this curve can be assimilated to a straight line. 2. The triaxial test is used to determine it.
  • Synonyms : intrinsic curve

Mohrsche Hüllkurve

  • Language : PIARC Road Dictionary / German
  • Theme : Straßen Baustoffe Materialprüfung
  • Definition : Eine Kurve, die das Verhältnis zwischen Schub- und Normalspannung repräsentiert, wenn sie auf eine bestimmte Oberfläche eines homogenen und isotropen Festkörpers aufgebracht wird, während ein Scherbruch entlang dieser Oberfläche erfolgt. In seinem nutzbaren Bereich kann eine Gerade an diese Kurve angepasst werden. Der Triaxialversuch wird zur Bestimmung dieser Kurve verwendet.