2025/04/16 by Leonov, N. S.
#cationic slow-disintegrating bitumen-polyurethane emulsions #composition #production technology #properties #атионные медленнораспадающиеся битумополиуретновые эмульсии #свойства #состав #технология производства
paper · doi:10.71536/vd.2025.1c171.10
It is shown that one of the effective organic binders for the production of cold asphalt-polymer concrete mixtures widely used for routine repairs in adverse weather conditions is direct cationic bitumen emulsions modified with polyurethane composition. It is established that an effective way to reduce the energy intensity and environmental safety of the production of road asphalt concrete mixtures is the development of compositions and technologies for the production of slowly disintegrating bitumen-polymer emulsions stabilized by the emulsifier Embit-M and modified with the polyurethane polymer MAC-1111. The parameters of the technological modes of production of bitumen-polymer emulsion are determined. The production of cationic bitumen-polyurethane emulsion is carried out in a disperser with a gap between the rotor and stator teeth of the bitumen emulsion plant of 0.2–0.4 mm at a rotor speed of 5 800 rpm for at least 60 minutes until the conditional viscosity stabilizes, С<sub>60</sub><sup>5</sup>. A diagram of the formation of the structure composition of the aggregation and sedimentation-resistant bitumen-polyurethane emulsion is given.