SBS is used to modify asphalt,through testing the softening point,ductility and aging ductility of asphalt under high temperature conditions,this paper analyzes the effect of SBS on asphalt aging resistance,and tests and analyzes the four components of asphalt and modified asphalt at different sampling points.Result indicates that asphalt aging is a macroscopic manifestation of reduced oil content and increased asphaltene.SBS can effectively delay the aging and decay of asphalt.The optimal development time for modified asphalt is about 3 hours,and the aging trend increases significantly after 4 hours.
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