thin-layer coating

Slow-breaking monophase cationic bitumen emulsions have been produced on the basis of bitumen modified with phenol-cresol-formaldehyde resin (PhCR-F). Bitumen emulsions were used as a binder for thin-layer coatings with slurry surfacing mixes (SSM). Physical and technical parameters of modified and unmodified emulsions were determined and analyzed. The optimal compositions of SSM were selected according to the breaking criterion. The values of SSM wet track abrasion were determined.

Three commercial road emulsions on the basis of petroleum bitumens differing by their production method (oxidated, distillation and modified bitumens) and Redicote E-11 emulsifier were obtained. The obtained emulsions were used for the production of Slurry Seal and thin-layer road coatings on its basis. The coatings based on modified oxidated bitumen have more advantages compared with those based on oxidated bitumen. The expensive distillation bitumen may be exchanged for modified oxidative one to use it in a Slurry Seal technology.