Term of the Road Dictionary
- Language : PIARC Road Dictionary / English
- Theme : Roads Materials Binders
- Definition : Fluid added to another to reduce its viscosity. Note: this term embraces relatively volatile distillates used in the manufacture of cutbacks, relatively involatile oils used in the manufacture of fluxed bitumens, and soft bitumens which are blended with harder bitumens to produce intermediate grades [CEN].