Bitumen emulsion is a mixture of fine droplets of bitumen and water. It is a liquid form of bitumen, making it easier to handle at lower temperatures compared to traditional hot bitumen. The emulsion is stabilized by adding an emulsifying agent, which prevents the bitumen droplets from coalescing. Bitumen emulsions are widely used in road construction and maintenance, including surface dressing, tack coats, and cold mix applications. They offer advantages such as reduced energy consumption, lower emissions, and safer handling due to lower application temperatures.