Understanding Your Emulsions
Asphalt emulsions are used in many pavement preservation methods such as pothole patching, micro-surfacing, chip seal, fog seal, and crack filling, but keeping emulsion intact during transport to a job site can be critical to a successful result. Understanding the properties of the emulsion can make or break the results of any application. Emulsion is a homogeneous mixture of two immiscible liquids such as asphalt and water. These two materials are put through a high shear mill with an emulsifier chemical and the result is an asphalt emulsion. The following chart from A Basic Asphalt Emulsion Manual, by the Asphalt Institute and the AEMA lists the types of anionic and cationic emulsions...