中文摘要：

为了改善复合改性沥青填缝料的性能，采用星点设计效应面法优化了原材料的最佳掺量。采用单因素分析方法确定了原材料掺量范围及加工工艺，选用中心复合模型，以针入度、弹性复原率、蠕变劲度、蠕变应变速率m值为指标进行试验分析，建立了总评归一值的效应面，以此确定各原材料掺量并进行了验证。试验结果表明：原材料最佳掺量为橡胶粉25％，外掺剂7％，SBS5％，SBR3％；星点设计效应面优化法用于确定复合改性沥青填缝料原材料掺量取值范围可行、有效。

英文摘要：

In order to improve the performance of composite modified asphalt sealant, the central composite design-response surface methodology was used to optimize the contents of raw materials. The content ranges of raw materials and processing technology were determined by single factor analysis method. Cone penetration, elastic recovery, creep strength, and m value of creep strain rate were analyzed by testing in central composite model. The response surface of the overall desirability was established, and the optimal contents of raw materials were determined and verified. The test results indicate that （ 1 ） the optimal contents of raw materials： rubber powder-25% , additive-7% , SBS-5% , and SBR-3%. Central composite design- response surface methodology is feasible and effective in optimization of the dosage of raw materials of composite modified asphalt sealant.