The effects of different types of base asphalt,modifier ratios,SBS modifier dosages,types of tackifying resins,additives,and preparation methods for toughness and tenacity of high viscous modified as-phalt were investigated.The results showed that using C based asphalt,with SBS addition of 8％,selecting phenolic resin or terpene resin as the resin type,without additives such as nano montmorillonite,and increas-ing the preheating temperature of the hemisphere head to 160℃,all were beneficial for the toughness and te-nacity indicators of high viscous modified asphalt.
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