废旧SBS改性沥青路面再生技术研究进展及发展趋势

Research Progress and Development Trend of Rejuvenation Technologies of Waste SBS Modified Asphalt Pavement

随着日益增加的交通流量、车辆大型化、严重超载等现象的发生,沥青路面的质量也被提出了更高的要求。为改善沥青路面的路用性能和延长其使用寿命,SBS改性沥青因其优异的高低温特性与粘结性能得到了普遍应用,但随之而来的则是废旧SBS改性沥青混合料的大量产生。这些废料通常采用填埋、堆弃等方式处理,已造成了环境的破坏和资源的浪费。从而,废旧SBS改性沥青混合料的有效高质量再生利用已成为现如今国内外研究的重点。鉴于此,本文综述了SBS改性沥青及混合料老化和再生的研究现状,分析了目前的再生技术特点,并展望了再生SBS改性沥青及混合料高性能化发展趋势。

With the occurrence of increasing traffic flow,large vehicles,serious overload and other phenomena,the quality of asphalt pavement has been put forward with higher requirements.In order to improve the pavement performance and prolong the service life of asphalt pavement,SBS modified asphalt is widely used in high-grade pavement because of its excellent high-and low-properties and cohesion.However,a large number of wastes SBS modified asphalt mixtures will be then produced.These wastes are generally disposed of at landfills and stockpiles,which have already caused the environmental damage and resources waste.Therefore,the effective and high-quality recycling of waste SBS modified asphalt mixture has become the research focus at home and abroad.In view of this,the present paper reviews the research status of aging and rejuvenation of SBS modified asphalt and mixture,analyzes the characteristics of current rejuvenation technologies,as well as prospects the development trend of high-performance SBS modified asphalt and mixture.