Zhao Jing, Zhao Xiangqing, Li Bo, Wang Yongning, Zhao Huan, Kang Kai
China Railway Investment Group Co., Ltd., Beijing 100195, China.
Northwest Research Institute Co., Ltd. of C.R.E.C., Lanzhou 730070, China.
Materials (Basel). 2025 Aug 7;18(15):3712. doi: 10.3390/ma18153712.
This study presents a method to more reasonably control the quality performance of activated rubber asphalt by microwave activation. Different activated rubber asphalt preparation process parameters (reaction temperature, stirring rate, and reaction time) were selected to explore the influence of different process parameters on the macroscopic properties of rubber asphalt, and a multi-indicator evaluation model was set up using the theoretical method of the RSR model to determine the optimal production process parameters. The results showed that reaction temperature had the strongest influence (gray correlation > 0.85) among production parameters, followed by stirring rate and reaction time. The optimal parameters identified were a reaction temperature of 220 °C, a stirring rate of 1000 rpm, and a reaction time of 120 min, under which the viscosity-temperature sensitivity decreased by approximately 18%, and the rutting factor (G*/sinδ) increased by over 20%, indicating significant improvements in rheological stability and high-temperature performance. The integrated evaluation approach provided reliable and practical guidance for producing high-performance activated rubber asphalt.
本研究提出了一种通过微波活化更合理地控制活化橡胶沥青质量性能的方法。选择不同的活化橡胶沥青制备工艺参数（反应温度、搅拌速率和反应时间），探讨不同工艺参数对橡胶沥青宏观性能的影响，并采用RSR模型的理论方法建立多指标评价模型，以确定最佳生产工艺参数。结果表明，在生产参数中，反应温度的影响最大（灰色关联度>0.85），其次是搅拌速率和反应时间。确定的最佳参数为反应温度220℃、搅拌速率1000转/分钟和反应时间120分钟，在此条件下，粘度-温度敏感性降低了约18%，车辙因子（G*/sinδ）提高了20%以上，表明流变稳定性和高温性能有显著改善。该综合评价方法为生产高性能活化橡胶沥青提供了可靠且实用的指导。
