Welcome on piarc.org!

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.

This site uses cookies to optimize its operation. They allow you to securely access your personal space and download our publications. You accept their use by clicking on the "Accept" button.

Join us
You cannot identify yourself because you have not chosen to accept cookies for the operations of the site. You can change your settings.

Your basket

Follow PIARC

Term of the Road Dictionary

colloid

Language : PIARC Road Dictionary / English
Theme : Roads Materials Binders
Definition : Substance divided up and dispersed in a liquid or gas phase (disperse phase, disperse medium), with particles typically smaller than 10 µm.

kolloid

Language : PIARC Road Dictionary / German
Theme : Straßen Baustoffe Bindemittel
Definition : Eine Substanz, die zerlegt und in eine flüssige oder eine gasförmige Phase (disperse Phase, disperses Medium) aufgeteilt wird, mit Teilchen üblicherweise kleiner als 10 µm.