![]() ![]() Negative charges less commonly used for materials having positive charges (such as lime).Ĭationic systems have a significant advantage over anionic emulsions. The chemical type and quantity of surface-active agent used in the manufacturing process govern the process in which the resulting asphalt emulsion can be used. In the case of anionic emulsions, the chemical charge is negative. The type of load is effective on the desired quality.Ĭhemical surface-active agents, which serve as emulsifiers, are classified by the electrochemical charge that is attained when they dissociate in a water solution, for example, cationic bitumen emulsion is suitable for siliceous (negatively charged) materials. Also, the adhesion used for bitumen emulsion that depends on the electrical charges in the bitumen emulsion particles and the surface of the rock material. RS (Rapid Set), MS (Medium Set), SS (Slow Set), and QS (Quick Set) are the setting-grades. The next set of the specification describes how quickly an emulsion will set or coalesce. The charge is important when designing an emulsion for compatibility with certain aggregates. ![]() Cationic emulsions begin with a “C” If there is no C, the emulsion is usually an anionic. Since water bitumen emulsions are used intensively as binding and film-forming material in construction, two types of emulsifiers are used: anionic and cationic. Bitumen Emulsions need to be classified by their ionic charge into cationic or anionic. ![]()
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