- Bitumen Emulsion
- Description of Bitumen Emulsion
Emulsions make it easy to handle, Store, Transport and apply bitumen at a lower temperature, Since this type of bitumen is liquid, There is no need to heat it before applying, Moreover, Applying bitumen emulsions using cold techniques reduces the consumption of energy and makes road construction environmentally friendlier.
The emulsifier can be defined as a surface active agent, Emulsifier keeps the bitumen in its fine droplet state by disallowing it to mix with other droplets, As the droplets are very fine they suspend in water, “Therefore, Bitumen emulsion is a dispersed liquid consisting of three products ( I.e. Water, Bitumen and emulsion ).
Bitumen emulsion are usually two phase systems consisting of two immiscible liquids, Bitumen and water, The bitumen phase can be dispersed in the aqueous phase by mechanically shearing it in a colloid mill, The dispersion of bitumen particles is held in suspension in water by a chemical emulsifier which usually imparts an electrical charge so that the resulting electrostatic forces prevent the globules from readily coalescing, That is like charges on each dispersed bitumen particle repel and prevent the particles from coalescing and settling from the suspension.
Emulsions can be used for almost any purpose for which conventional bitumens, Polymer modified binders and cutback bitumens are used and are suited to a number of other applications where the use of cutbacks is not appropriate.
Therefore we can say that a bitumen emulsion is a liquid product consisting of three things ( I.e. Water + Emulsion + Bitumen ) where droplets of bitumen are suspended in water.
- Type of Bitumen Emulsion
✅ Cationic
✅ Australian Standard Bitumen
✅ Oxidized Bitumen
✅ Penetration Grade Bitumen
✅ Performance Grade ( PG ) Bitumen
✅ Viscosity Grade ( VG ) Bitumen
- Usage of Bitumen Emulsion