废食用油预脱硫胶粉改性沥青组分与黏弹性研究（双语出版）

为研究废食用油预脱硫胶粉（WRO）对沥青组分及黏弹性的影响，在不同掺量、加工温度和加工时间下分别制备了15组废食用油预脱硫胶粉改性沥青（WROMA）。基于四组分试验、DSR时间扫描试验、多应力蠕变回复试验分析了沥青组分及黏弹性变化的规律。结果表明：在组分方面，WRO中的橡胶烃主要补充沥青质，油分大部分补充饱和分，少部分补充芳香分；加工工艺与改性沥青中饱和分和胶质的含量线性相关性较弱，与芳香分及沥青质的含量线性相关性很强，且芳香分与沥青质含量主要受WRO掺量影响。在黏弹性方面，WRO掺量增加，改性沥青高温黏性降低，弹性增加。为保证改性沥青获得足够的高温弹性，WRO最佳掺量为30%，加工温度为160℃、加工时间为2 h。综合组分与黏弹性的分析结果可知：芳香分是影响WROMA高温黏性的主导因素，其含量越高沥青黏性越明显；沥青质和WRO中的橡胶烃是影响WROMA高温弹性的主导因素，两者含量越高，改性沥青弹性越明显。

Composition and Viscoelasticity of Asphalt Modified with Crumb Rubber Pre-desulfurized by Waste Cooking Oil（in English）

To investigate the effect of waste rubber oil (WRO), which is crumb rubber pre-desulfurized with waste cooking oil, on the composition and viscoelasticity of modified asphalt, 15 groups of specimens of WRO modified asphalt (WROMA) were prepared with different dosages, processing temperatures and processing times. The composition and viscoelasticity of WROMA were evaluated using an asphalt fraction test, a DSR time sweep test, and multiple stress creep and recovery test. The results indicate that in terms of composition, the rubber hydrocarbon in WRO mainly supplements the asphaltenes fraction; most of the oil, the saturates fraction; and a little amount of oil, the aromatics fraction. The processing conditions do not have a considerable effect on the saturates or resins fractions in the WROMA, while they have a strong linear correlation with the aromatics and asphaltenes fractions. Moreover, the aromatics and asphaltenes fractions are mainly affected by the contents of WRO. In terms of viscoelasticity, with the increase in WRO content, the high temperature viscous component of WROMA decreases and elasticity increases. To ensure that the WROMA acquires adequate high-temperature elasticity, it is recommended to produce modified asphalt with 30% WRO at a temperature of 160℃ for a processing time of 2 h. Based on the correlation analysis between the composition and viscoelastic parameters, it can be concluded that aromatics fraction accounts for the viscous behavior of WROMA, and asphaltenes fraction and rubber hydrocarbon in WRO contribute to the high-temperature elasticity of WROMA.