FAQs
Frequently Asked Questions (FAQs)
Here are some Frequently Asked Questions (FAQs) about pavement preservation and specific treatments.
Asphalt Emulsion Basics
An asphalt emulsion is liquid asphalt cement emulsified in water. It’s made of three ingredients: asphalt, water, and an emulsifying agent.
Asphalt emulsions don’t require petroleum agents and often don’t require heating.
There are three categories of asphalt emulsion: anionic, cationic or nonionic in reference to the electrical charge around their asphalt particles. They can also be sorted by how quickly they coalesce into asphalt cement: RS (Rapid Set), MS (Medium Set), SS (slow set), and QS (Quick Set).
Once aggregates are combined with asphalt emulsions, it destabilizes the emulsions and allows the asphalt to fuse together with the aggregates. This creates a strong adhesive bond. The water in the emulsion evaporates leaving the finished application.