基于灰色关联度法的SBS改性沥青车辙因子影响因素分析

为了分析原材料对SBS改性沥青车辙因子的影响,课题采用五种基质沥青、五种SBS改性剂和五个不同的SBS改性剂掺量,设计了3因素5水平的正交试验,研究各因素对车辙因子的影响规律及程度,并使用灰色关联度法分析了基质沥青四组分比例、改性剂性能参数与70℃车辙因子的相关性。正交试验结果表明:改性沥青车辙因子受改性剂掺量的影响最大,其次是基质沥青,改性剂类型对车辙因子影响最小;灰色关联度分析结果显示:改性剂的伸长率、拉伸应力以及硬度与改性沥青的车辙因子有较好的相关性;基质沥青中芳香分和饱和分的含量与改性沥青车辙因子关联性较好。

Analysis influence of SBS modified asphalt rutting factor by gray correlation method

In order to analyze the impact of raw materials to rutting factor of SBS modified asphalt,the subject selected of five brands asphalt,five kinds of SBS modifier and five different SBS modifier content,to design a orthogonal experiment of three factors and five levels to study the regularity and extent of various factors affecting the rutting factor.Also this article used gray correlation to study the coefficient of proportion of asphalt four-component,SBS modifier performance parameters and rutting factors.The results showed that： modifier content have maximum effect on modified asphalt rutting factor, foUowed by asphalt and modifier type;Gray correlation analysis showed that：modifier elongation,tensile stress,hardness,asphalt content of aromatics and saturates have better association with asphalt rutting factors.