The selection of production technology of polymer-bitumen binders as an innovative nanobinders used in asphaltic concrete pavement

In recent years nanotechnology and nanomaterials have been used in various industries including road construction and road construction has reached a new level. Today it is one of the most priority field for the state. To increase the number of roads that would meet modern requirements is impossible without new technologies and materials. Bituminous materials are the example of such materials. They are typical oil nanodisperse systems, the properties of which are determined by the nanostructured particles of the dispersed phase and hydrocarbon dispersion medium.To expand the range of modern and promising binders, the aim of the research was to design a promising technology for the production of polymer-containing bituminous materials obtained by different technologies: modification by polymers of roadside bitumen, compounding of deeply oxidized bitumen with modified polymers, tar. The objects of the studies were the road bitumen, deepoxygenized bitumen, light and heavy tar. Butadiene-styrene thermoplastic elastomer DST-30-01 was used as polymer modifier that allows achieving the desired particle size of the dispersed phase and creates an additional nanophase of the polymer and thus provides the required performance. The analysis of the properties of polymer-bitumen binders showed the advantage of the technology based on the compounding of deep-oxidized bitumen with modified polymer tar. There is an increase in the values of the maximum tensile force, cohesive and strength properties, adhesion index with a certain decrease in extensibility. A promising technology for the production of polymer-bitumen binders as innovative nanobinders for asphaltic concrete pavement with improved quality indicators has been designed. The technology will expand the range of high-quality products needed in road construction and will provide the growth of technical and economic indicators of bitumen production