Road American
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What process parameters must be controlled to consistently produce bitumen emulsion meeting road specification standards?
Key parameters include bitumen temperature, water temperature, emulsifier dosage, pH control, colloid mill shear rate, and residence time. Bitumen temperature usually ranges from 120-160°C, while water phase temperature must support stable emulsification. pH is critical for cationic emulsions and must be tightly controlled. Inconsistent shear or temperature fluctuations directly affect particle size distribution, breaking behavior, and storage stability.
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