bitumenemulsion
Bitumen emulsion is a stable, water-based dispersion of bitumen created by mechanical agitation in the presence of an emulsifying agent. In the final product, bitumen exists as fine droplets dispersed in water and stabilized by charged or nonionic surface-active agents. Emulsions are commonly categorized by the charge of the droplets (anionic or cationic) and by their setting rate (rapid, medium, or slow). They are designed to break and form a continuous bitumen film when applied to a surface, by dilution, heating, evaporation of water, or chemical action.
The emulsified formulation allows work at ambient temperatures and reduces energy use compared with hot-process bitumen.
Common uses include tack coats to bond successive asphalt layers, prime coats to prepare gravel or porous
Performance depends on setting rate, viscosity, and emulsion stability. On application, the water in the emulsion
Bitumen emulsion competes with hot mix asphalt as a lower-energy alternative for certain maintenance tasks, offering