INFLUENCE OF RUBBER CRUSH ON THE PROPERTIES OF OIL BITUMEN

UDC 678.05

  • Dolinskaya Raisa Moiseevna – PhD (Chemistry), Associate Professor, Assistant Professor, the Department of  Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: raisa_dolinskaya@mail.ru

  • Prokopchuk Nikolay Romanovich – DSc (Chemistry), Corresponding Member of the National Academy of Sciences of Belarus, Professor, Professor of the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: nrprok@gmail.ru

DOI: https://doi.org/10.52065/2520-2669-2021-241-1-172-175

Keywords: rubber crumb, modification of petroleum bitumen, physical and mechanical characteristics.

For citation: Dolinskaya R. M., Prokopchuk N. R. Iinfluence of rubber crush on the properties of oil bitumen. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2021, no. 1 (241), pp. 172–175 (In Russian).  DOI: https://doi.org/10.52065/2520-2669-2021-241-1-172-175.

Abstract

Investigations of the process of modification of petroleum bitumen with rubber crumb obtained when grinding of worn-out automobile tires have been carried out. The physical and mechanical characteristics of the obtained rubber-bitumen composition and the kinetic parameters of the process of modification of petroleum bitumen were evaluated. Studies have shown the degree of swelling increases with an increase in the size of the crumb, and the optimum of swelling for larger crumb is reached much faster. In the process of thermal destruction of crumb rubber, its spatial structure is partially destroyed. The process of destruction of the spatial network structure is facilitated by swelling of rubber in light low molecular weight bitumen fractions.

An analysis of the process of modifying bitumen with crumb rubber showed that rubber crumb of various sizes can be used in a bitumen-rubber composition.

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30.11.2020