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采用北美沥青（ＵＩＮＴＡＨＩＴＥ）、聚乙烯（ＰＥ）以及丁苯橡胶母体（ＳＢＲ）对国产盘锦、兰炼重交沥青进行复合改性。并对新加坡Ｓｈｅｌ沥青以及盘锦、兰炼改性沥青的各项技术指标进行了系统地对比分析试验研究，进而对改性沥青ＳＭＡ混合料的路用性能进行了全面试验研究。
The North American bitumen (UINTAHITE), polyethylene (PE) and styrene-butadiene rubber (SBR) were used to modify the domestic Panjin and Lanlian heavy traffic asphalt. A systematic comparative analysis of various technical indexes of Shel asphaltene in Singapore, Panjin and Lanlian modified asphalts was carried out, and then the road test performance of the modified asphalt SMA mixture was comprehensively studied.