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为弥补SBS改性沥青在高温稳定性、抗老化性等方面的不足,提高SBS改性沥青的综合性能,延长沥青路面使用寿命,将活性硅、SBS改性剂加到基质沥青中,制备活性硅/SBS复合改性沥青。针对活性硅掺量、SBS掺量、剪切时间、剪切温度4个因素,在3种水平条件下进行正交试验研究,分析其对活性硅/SBS复合改性沥青各项性能变化趋势的影响及其影响程度,从而确定复合改性沥青的各项制备工艺参数及改性剂掺量的优化组合方案。
To make up for SBS modified asphalt in high temperature stability, anti-aging and other shortcomings, improve the overall performance of SBS modified asphalt, extend the service life of asphalt pavement, the active silicon, SBS modifier added to the base asphalt, preparation activity Silicon / SBS composite modified asphalt. According to the factors of active silicon content, content of SBS, shear time and shear temperature, orthogonal experiment was carried out under three levels of conditions to analyze the change trends of properties of active silicon / SBS composite modified asphalt Influence and its impact degree, so as to determine the optimal combination of various preparation process parameters and modifier content of the composite modified asphalt.