多功能低碳改性沥青的研发是环境友好型道路建设的关键技术。基于电荷对有害气体及杂质的吸附作用，沥青具备电性能后必将有助于改善路面环境功能，通过大量试验筛选，创造性提出具有电性能以及热拌减排、阻燃抑烟与降低路面温度等多重环境功效的新型智能电气石粉（tourmaline）改性沥青。系统研究不同类型电气石粉改性沥青的压、热电性能，从改性沥青的物化反应、微观结构、聚集态结构及电场效应等方面，深层次揭示电气石粉改性沥青多功能化机理；深入研究电气石粉改性沥青的热拌减排效果、阻燃抑烟效果及降低路面温度效果，确定各种功效的影响因素及规律；进一步宏观研究电气石粉改性沥青的路用性能改善效果，并评价其存储稳定性。本项目不但可以为新型多功能低碳路面材料的研发及应用奠定坚实基础，也将进一步拓宽电气石的应用领域。

Research and development of multifunctional and low-carbon modified bitumen is the key technology of environment-friendly road construction. Based on the reason that electric charge has the function of absorbing harmful gas and impurities, bitumen being equipped with electric performance will certainly improve the pavement environment. Through lots of deep research and experimental selection, the intelligent tourmaline modified bitumen is creatively proposed for the first time, which has multiple environmental functions, such as emission reduction of hot-mixed bitumen mixture, flame retardant and smoking suppression, and pavement cooling effect. A systematic study will be made on the piezoelectric and thermoelectric properties of bitumen modified by different types of tourmaline. In addition, the multifunction mechanism of tourmaline modified bitumen is characterized comprehensively from many aspects, including physical and chemical reaction, interface micro-structure, aggregation structure and electric field effect. We will carry on deep research to the effect of emission reduction, flame retardant, smoking suppression and pavement cooling about tourmaline modified bitumen, and obtain the factors and rules that affect the above effects. Further more, the effect of modified bitumen pavement performance improved by tourmaline will be made further macroscopic research. And the storage stability of tourmaline modified bitumen will be evaluated. This project will not only build a solid foundation for the development and application of new multifunctional and low-carbon pavement materials, but also contribute to further expansion in the application field of tourmaline.