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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

cationic emulsion

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Materials Mixed Materials
  • Definition : Bitumen emulsion in which the emulsifier (an acid soap usually obtained by the action of hydrochloric acid on one or two amines) imparts positive charges to the dispersed bitumen particles. Note: cationic emulsions are less dependent for their adhesion on the nature of the materials, traffic levels and weather conditions during laying.