Production and characterisation of waste tire pyrolytic oil – Investigating physical and rheological behaviour of pyrolytic oil modified asphalt binder

The effort of basic restrict the use of petroleum-based products, the use of recycling and alternative resources have tremendous gained interest in the last decades. In this experimental study, waste tire granules were pyrolyzed under a vacuum atmosphere. Pyrolysis experiments occurred in a fixed bed reactor at 450 °C. The chemical characterisation of the pyrolytic oil was exanimated by various analytical methods, such as Infrared spectroscopy (FT-IR), ultimate and gas chromatography coupled to mass spectrometry (GC-MS). It was determined that mainly contains aliphatic and aromatic compounds. In addition, pyrolytic oil was used as a partial replacement for conventional asphalt (petroleum-based) to limit the use of conventional asphalt in the applications of road engineering. The effect of the pyrolytic oil additive on the fundamental physical behaviours of the asphalt was evaluated, and also rheological behaviour of the asphalt binder was investigated by the viscosity (RV) and bending-beam-rheometer (BBR) tests. The addition of pyrolytic oil affected some physical properties of asphalt binders more or less. It was found that conventional and pyrolytic oil-modified asphalt samples met the technical requirement based on BS EN 14771 standard. Finally, it can be concluded that asphalt modified with pyrolytic oil can be used in road engineering applications under low-temperature conditions.