Studying of Properties of Bitumen Modified based on Secondary Polymer Wastes Containing Zinc

This paper uses laboratory experiments to present the properties of zinc-containing secondary polymer (ZnIP) and sulfur-containing modified bitumen. Zinc chloride is used as the main raw material, acrylonitrile as secondary polymer monomers, tri polymers based on isoprene, natural rubber, and styrene. BND 60/90 potential base bitumen is mixed with zinc-preserved secondary polymer (ZnIP) and sulfur in various proportions using a high-shear laboratory-type mixer. The properties and microstructure of the samples determined by conventional and empirical testing methods, IR-spectrum, SEM analysis (Scanning Electron Microscope), elemental analysis, thermal gravimetric (TGA and DTA) analysis, and X-ray phase analysis are studied. The results showed that zinc-containing secondary polymer (ZnIP) and sulfur modification improved the traditional properties of base bitumen, such as a positive change in softening point, temperature sensitivity, etc. The microstructure and properties of zinc-containing secondary polymer (ZnIP) and sulfur-modified bitumen depend on the type of secondary polymer, the solubility of the second polymer in the bitumen, and the composition of the second polymer. The results of the above analysis showed that the physicochemical, viscosity, elasticity, and rheological properties of bitumen modified based on ZnIP-S gave very good results compared to unmodified bitumen. Experiments were conducted proving that bitumen modified based on ZnIP-S increases the elasticity, heat, cracking, and long-term resistance of asphalt.

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