About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Maxim M. Vysotsky, engineer of the 1st category, Russian University of Transport, Moscow, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Arina S. Rybina, engineer, Russian University of Transport, Moscow, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Valery V. Savitsky, candidate of technical sciences, associate professor, Russian University of Transport, Moscow, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Dmitry Yu. Nebratenko, candidate of chemical sciences, associate professor, Russian University of Transport, Moscow, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it |
| Title of the article | Modification of oxidized bitumen with thermoplastic elastomers of various topologies |
| Abstract. | Problem Statement. In recent years, modified bitumen has been widely used in road construction. One of the main requirements for the quality of bitumen binders is a stable adhesive ability to mineral materials of various nature and the stability of technological and operational properties over time. The modification of bitumen by elastomers of various composition and structure contributes to the increase of these indicators. The purpose of the study is a comparative assessment of the effect of oxidized petroleum road viscous synthetic thermoplastic elastomers of various chemical structures on the properties of bitumen. To achieve the goal, the following tasks were solved: 1. Study of the properties of road binders modified with individual polymers of the class of thermoplastics. 2. Determination of the effectiveness of the use of synthetic thermoplastic elastomers based on butadiene monomers as modifying agents for petroleum road bitumen. Results. The initial stage of the study was to assess the basic characteristics of the raw materials of the multicomponent system: oxidized petroleum bitumen and thermoplastic elastomeric materials of two types. Investigation of quantitative influence of modifying agents was carried out using butadiene styrene thermoplastic elastomer and syndiotactic 1,2 polybutadiene. During the experiment the dynamics of changes of bitumen properties indices has been revealed, modified separately by each thermoplastic elastomer in an amount from 0 to 5 wt. %. It has been shown that in order to reach the existing normative requirements for polymer-bitumen binders it is advisable to use linear butadiene styrene thermoplastic elastomer. For syndiotactic 1,2 polybutadiene an increased, in comparison with SBS-polymer, solubility in complex multicomponent oil products has been noted. This is an absolute advantage while creating highly saturated mortar compositions. Conclusions. The conducted studies demonstrate the effectiveness of the use of polymer materials such as thermoplastics to regulate the quality indicators of bitumen binders. The expediency of using modifying agents of different composition is evaluated. Due to the imminent introduction of the main provisions of the volumetric and functional design system, the data obtained can be used for the development of bitumen binders of different PG brands. Therefore, it is considered important to continue research in the field of mixed compositions based on thermoplastics of various chemical structures in order to optimize the compositions of road binders modified with polymers. |
| Keywords. | butadiene styrene thermoplastic elastomer, syndiotactic 1,2 polybutadiene, polymer-bitumen binder (PmB) |
| For citations: | Vysotsky M.M., Rybina A.S., Savitsky V.V., Nebratenko D.Yu. Modification of oxidized bitumen with thermoplastic elastomers of various topologies // News KSUAE, 2024, № 1(67), p. 14-22, DOI: 10.48612/NewsKSUAE/67.2, EDN: AGMZLQ |
