Asphalt emulsions are mixtures of asphalt, water, and an emulsifying agent (a soap-like chemical) used in various pavement maintenance applications, such as crack sealing, fog sealing, and chip seals. While emulsions are generally considered more environmentally friendly than cutback asphalts (asphalt dissolved in petroleum solvents), they still pose potential environmental impacts. One concern is water contamination. Asphalt emulsions can potentially contaminate surface water or groundwater if spilled or improperly handled. Emulsifying agents can also be harmful to aquatic li....
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