Preparing thick emulsions for road surfaces - by mixing powdered asphalt to mineral aggregate and bitumen emulsion.

摘要

To prepare the emulsion for road coating, mineral aggregate is mixed with powdered asphalt prior to adding the aqueous bitumen emulsion. The water content is adjusted by adding water to the aggregate prior to mixing with the emulsion. ADVANTAGE - By adding the powdered asphalt, the large sizes fraction of the aggregate is coated by the bitumen and does not tend to separate from the binder.