Abstract: SBS modified paving asphalt samples from Tahe Crude oil were prepared by using suitable technique, and analysis results show that their properties well meet the requirements of JTG F40-2004 technical specification. It is observed that by adding stabilizing agent, a homogeneous micro-structure system of SBS and Tahe asphalt is formed, and thus, the storage stability of SBS modified Tahe asphalt is good. The results of conventional performance analysis indicate that Tahe SBS modified paving asphalt is less sensitive to temperature, and it possesses excellent high-low temperature performance. These paving asphalt samples were also evaluated by SHRP procedure. Test results show that Tahe SBS modified paving asphalt samples exhibit excellent performance of temperature response and resistance to fatigue cracking, which meet the performance grade of PG70-34 and PG76-34 respectively.

Key words: Tahe crude oil, SBS, modification, paving asphalt