关键词: 道路工程, 温拌剂, 岩沥青, 复合改性, 黏度

Abstract: When the rock asphalt improved the matrix asphalt' s high-temperature pertormance ， thermal susceptibility and the resistance to aging ， it also increased the mixture and compaction temperatures. However , warm mix agent could lower asphalt' s mixture and compaction temperatures. Based on this , KSHD typed warm mix agent and Xinjiang Urho rock asphalt were selected as modifiers to test their compound modified effect on the matrix asphalt. And the modification mechanism was analyzed through composition change. The result shows that the compound modification by warm mix agent not only retains the advantage of using rock asphalt as modifier but also lowers the asphalt' s mixture and compaction temperatures. In addition , the crack resistance of asphalt at lower temperature is also improved at certain degree. Moreover , it is found that the saturates and asphaltenes of sol-gel type asphalt increase after adding the wax warm mix agent , while the resins and asphaltenes of sol type asphalt increase

Key words: road engineering, warm mix agent, rock asphalt, compound modification, viscosity