The adhesion between asphalt binder and aggregate is very important to the performance and durability of asphalt pavement. In order to explore the characterisation of modified asphalt binder in microstructure during aging and rejuvenation, the virgin asphalt binder and three kinds of modified asphalt binder (styrene-butadiene-styrene block copolymer (SBS), rubber powder and high viscosity and high elasticity [HVHE] modifier) in different aging and rejuvenation condition were prepared. The micromorphology and surface adhesion were measured by atomic force microscopy. The average roughness value was used as the index to evaluate the micromorphology of asphalt binder. The surface adhesion was used as the index to evaluate the adhesion properties of asphalt binder. Results show that the “bee” structure of SBS-modified asphalt binder increased slightly after long-term aging, and the recovery effect of aromatics oil was the closest to that of the unaged one. The rubber powder-modified asphalt binder and HVHE-modified asphalt binder showed the spot structure. And no matter for short-term aging or long-term aging, aromatics oil had the best recovery effect on micro morphology. The adhesion of the three modified asphalts would decrease gradually after aging. The effects of three kinds of rejuvenator on the adhesion of SBS-modified asphalt binder and rubber powder-modified asphalt binder were different. Rejuvenator, aromatic oil and warm mix asphalt mixture (WMA) additive could rejuvenate the loss of adhesion of HVHE-modified asphalt binder to a certain extent.

中文翻译：

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基于原子力显微镜的老化再生对改性沥青结合料黏附性能的影响

沥青结合料与集料之间的附着力对沥青路面的性能和耐久性非常重要。为探究改性沥青结合料在老化和再生过程中微观结构的表征，将原生沥青结合料和三种改性沥青结合料（苯乙烯-丁二烯-苯乙烯嵌段共聚物（SBS）、橡胶粉和高粘度高弹性[HVHE] ]改性剂）在不同的老化和回春条件下制备。通过原子力显微镜测量显微形态和表面附着力。以平均粗糙度值作为评价沥青结合料微观形貌的指标。以表面附着力作为评价沥青结合料附着力的指标。结果表明，SBS改性沥青结合料长期老化后“蜜蜂”结构略有增加，芳烃油的回收效果与未老化的最接近。胶粉改性沥青结合料和HVHE改性沥青结合料呈现斑点结构。并且无论是短期陈化还是长期陈化，芳烃油的微观形貌恢复效果最好。三种改性沥青老化后的附着力会逐渐下降。三种再生剂对SBS改性沥青结合料和胶粉改性沥青结合料的附着力影响不同。再生剂、芳香油和温拌沥青混合料（WMA）添加剂可以在一定程度上恢复HVHE改性沥青结合料的失去附着力。芳烃油的回收效果与未老化的最接近。胶粉改性沥青结合料和HVHE改性沥青结合料呈现斑点结构。并且无论是短期陈化还是长期陈化，芳烃油的微观形貌恢复效果最好。三种改性沥青老化后的附着力会逐渐下降。三种再生剂对SBS改性沥青结合料和胶粉改性沥青结合料的附着力影响不同。再生剂、芳香油和温拌沥青混合料（WMA）添加剂可以在一定程度上恢复HVHE改性沥青结合料的失去附着力。芳烃油的回收效果与未老化的最接近。胶粉改性沥青结合料和HVHE改性沥青结合料呈现斑点结构。并且无论是短期陈化还是长期陈化，芳烃油的微观形貌恢复效果最好。三种改性沥青老化后的附着力会逐渐下降。三种再生剂对SBS改性沥青结合料和胶粉改性沥青结合料的附着力影响不同。再生剂、芳香油和温拌沥青混合料（WMA）添加剂可以在一定程度上恢复HVHE改性沥青结合料的失去附着力。并且无论是短期陈化还是长期陈化，芳烃油的微观形貌恢复效果最好。三种改性沥青老化后的附着力会逐渐下降。三种再生剂对SBS改性沥青结合料和胶粉改性沥青结合料的附着力影响不同。再生剂、芳香油和温拌沥青混合料（WMA）添加剂可以在一定程度上恢复HVHE改性沥青结合料的失去附着力。并且无论是短期陈化还是长期陈化，芳烃油的微观形貌恢复效果最好。三种改性沥青老化后的附着力会逐渐下降。三种再生剂对SBS改性沥青结合料和胶粉改性沥青结合料的附着力影响不同。再生剂、芳香油和温拌沥青混合料（WMA）添加剂可以在一定程度上恢复HVHE改性沥青结合料的失去附着力。