What viscosity ranges are typically specified for slow, medium, and rapid setting bitumen emulsions?

Viscosity targets vary by standard, temperature, and method, but the practical pattern is consistent. Rapid setting spray grades are kept low enough for nozzle atomization and uniform bar distribution at workable pressures. Medium setting grades for mixing and some surface treatments run higher to maintain coating and reduce runoff. Slow setting grades for slurry and microsurfacing can be higher still to support aggregate suspension and mix stability. Always compare values only at the stated test temperature and instrument, because viscosity shifts strongly with temperature and measurement method.