Abstract
In this article, BN 90/30 brand bitumen is modified by adding 5% to 15% acrylic copolymers containing Cu, Zn, Ni, and Sn metals, along with up to 24% sulfur. Copolymers based on acrylic and methyl methacrylate with metals (Ni, Sn, Cu, Zn) were used. Different masses were mixed in a heat-resistant 1000 ml container at various mixing speeds and temperatures, specifically 140, 160, 180, and 200°C. According to the obtained results, it was found that the reaction yield of bitumen modified at the optimal temperature of 200°C and a mass ratio of 15:24:61 is high 94.8%. The composition, physico-chemical properties, and mechanical properties of the modified bitumen were analyzed using IR-spectroscopy, thermogravimetric (TG) and differential thermal analysis (DTA), as well as X-ray phase and X-ray fluorescence analysis. Using X-ray phase analysis of the modified bitumen, it was determined that the initial substances underwent complete adhesion reactions with each other. The elasticity, viscosity curves, and rheological properties of the obtained modified bitumen were compared with those of unmodified bitumen and analyzed. Based on the above methods of analysis, modified bitumen can be used in asphalt roads, for covering the upper parts of roofs, and for producing waterproofing materials.