橡胶沥青不能稳定存贮制约了胶粉改性沥青的推广应用。高温可使胶粉发生脱硫、裂解，相应技术可解决胶粉改性沥青稳定存贮问题，基于此原理的Terminal Blend胶粉改性沥青技术在美国得到成功应用，但由于沥青不耐高温，在脱硫反应中易挥发，会产生燃爆与老化等新问题。借鉴胶粉高温脱硫思想，利用废食用油闪点高的特点，将胶粉加入到废食用油进行高温条件下的预脱硫，制备存贮稳定、性能良好的改性沥青。该新型改性沥青包括脱硫和再交联两个反应阶段，微观上表现为化学结构的变化，宏观上表现为流变性能的变化。在微观结构方面，采用化学分析手段对预脱硫胶粉及其改性沥青的化学结构进行测试与分析。在宏观力学性能方面，通过多种流变仪对材料的宽温域流变性能进行表征与评价，并建立化学结构与流变性能之间的关系，以期构建材料宏观流变性能与微观结构参数之间的联系，用以指导新型改性沥青的设计、生产和性能评价。

As asphalt rubber can’t be stored stably, the application of rubberized asphalt has been restricted. High temperature curing can devulcanize and depolymerize the rubber; hence, the storage problem of rubberized asphalt can be solved. Based on the technology, Terminal Blend rubberized asphalt is applied successfully in America. However, since asphalt can’t resist high temperature, part of asphalt component will volatilize during devulcanization thus resulting in explosion and aging problems. By drawing lessons from rubber devulcanization at high temperature, rubber is devulcanized at high temperature with the help of waste cooking oil, which has high flashing point. Storage stable and high performance modified asphalt can be prepared with this kind devulcanized rubber. The preparation can be divided into devulcanization period and re-crosslinking period. In microcosm, the chemical structure changes, while from a macro level perspective, rheology properties change. In the aspect of microstructure, chemical structure of devulcanized rubber and modified asphalt thereof will be analyzed using chemical analytical methods. As to macro mechanics performance, various rheometers will be used to characterize rheology properties at varying temperature. Fuethermore, the relationship between rheology properties and chemical structure will be built to bridge between macro rheological properties and microscopic parameters. The research results will support modified asphalt design, production and performance evaluation.