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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

complex modulus

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Materials Mixed Materials
  • Definition : Modulus characterizing the recoverable deformation behaviour of linear viscoelastic materials under harmonic stress. Notes: 1. It is a complex number which is the ratio of complex stress to complex strain. 2. This quantity is used to characterize the recoverable deformation behaviour of bituminous mixtures at low stress amplitude.

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