（西安ope电子竞技研究院，陕西 西安 710065）
Study on the Influence of Preparation Process on the Technical Performance of Composite Rubber Asphalt
MA Qing-we, YANG Chen-guang
（Xi'an Highway Research Institute, Xi'an 710065,China）
Abstract: Composite rubber asphalt was prepared by five processes, and the effects of different preparation processes on the technical properties of composite rubber asphalt were studied. The results showed that the screw extruded rubber powder thermomechanical desulfurization method improved the penetration performance of composite rubber asphalt more significantly; aging had no effect on the ductility of composite rubber asphalt prepared by chemical desulfurization rubber powder; the shear temperature of 220 ~C asphalt had adverse effect on softening point, elastic recovery, viscosity at 135 ~C and aging ductility; the comprehensive technical properties of composite rubber asphalt that composite rubber asphalt was the preferred, which was prepared by powder thermal mechanical desulfurization and asphalt shearing process.
Key words: rubber asphalt; preparation process; screw extrusion process; rubber powder size; stability; road performance