Under the background of the development strategy of"carbon peaking and carbon neutrality",desulfurization rubber powder/SBS composite modified bitumen is prepared,and its performance,viscosity-temperature characteristics and flue gas emissions are studied.The results show that the penetration degree,softening point,ductility and viscosity of composite modified bitumen meet the requirements of the specification,and have outstanding high temperature performance and tensile resistance.It has large viscosity at high temperature and low temperature viscosity,which ensures construction and anisotropy.Compared with conventional SBS modified bitumen,the flue gas emission in the on-site production process is effectively reduced,the SO2 emission is reduced by about 25％,and the NO2 and NOx emissions are reduced by more than 50％.
road engineeringcomposite modified bitumendesulfurization rubber powderviscosity-temperature characteristicsflue gas emission
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