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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

master curve

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Materials Material Testing
  • Definition : Composite curve representing the complex modulus of a viscoelastic heat-sensitive material (such as a bituminous binder or mixture), constructed from the values of this modulus at different temperatures and frequencies by shifting the results along the frequency axis by a factor called the ''shift factor''.

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