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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

resilient modulus

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Materials Soils and Aggregates
  • Definition : Modulus characterizing the recoverable deformation behaviour of unbound granular materials. Note: in a repetitive loading triaxial test under constant lateral stress, it is the secant modulus at unloading calculated as the ratio of the stress deviator to the axial recoverable strain.

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