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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

prestressing with unbonded tendons

  • Language : PIARC Road Dictionary / English
  • Theme : Structures Other Structures and General Items
  • Definition : Method of prestressing concrete in which each individual cable is provided with permanent freedom of movement relative to the concrete, by coating each individual tendon with a generally lithium-based grease and covering it by a plastic sheathing formed in an extrusion process. Note: the transfer of tension to the concrete is achieved by the steel cable acting against steel anchors embedded in the perimeter of the slab.

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