Abstract: Fluid catalytic cracking (FCC) slurry oil having high content of aromatics is a good blending component for pavement asphalt. SBS modified asphalt was prepared with SBS and FCC slurry oil blended asphalt in this study, using distillates from the distillation of FCC slurry oil as compatibilizer to pre-swell SBS and the residue of distillation was used to adjust the penetration of modified asphalt. The properties of these obtained SBS modified asphalt samples were determined. Test results show that the distillates from FCC slurry oil is a good swelling agent for SBS, the dispersion property of swelled SBS improves significantly, thus just by simple mechanical stirring, a well dispersed and stable SBS modified asphalt product can be obtained. With a SBS mass content of 4.5%, using slurry oil and vacuum residue as blending components, SBS modified asphalt meeting the standard of JTGF40-2004 can be prepared by using mechanical stirring.

Key words: catalytic cracking slurry oil, SBS, modified asphalt, residue oil