不同纳米吸波材料对沥青自愈合性能的影响研究  

Influence Study of Different Nano Absorbing Materials on Asphalt Self-healing Properties

作　　者：贺军 李超[2] 陶关玉 肖月[2] 

机构地区：[1]广东省南粵交通揭惠高速公路管理中心,揭阳515325 [2]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070

出　　处：《武汉理工大学学报（交通科学与工程版）》2018年第1期97-102,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目(51778515);湖北省自然科学基金项目(2016CFB174);国家重大科学研究计划项目(2014CB932104)资助

摘　　要：沥青路面在使用过程中产生的裂纹在足够的间歇期内可以自我愈合,但这种愈合缓慢且效果不佳,而微波加热可以快速有效的实现沥青自愈合,文中通过掺加碳纳米管和石墨烯来提高沥青的微波吸收性能.表征了两种材料的表面形貌,研究了改性沥青的三大指标和高低温流变性能,以及不同沥青的自愈合性能.结果表明,两种纳米材料的加入都提高了基质沥青的起始愈合温度并降低了基质沥青的自愈合性能.Asphalt pavement cracks can be self healed after the sufficient intermittent period.However,this kind of healing is slow and the effect is not good,and microwave heating can realize the selfhealing process of asphalt quickly and effectively.The microwave absorbing performance of asphalt was improved by doping carbon nanotubes and graphene in this paper.The surface morphology of two kinds of materials was characterized firstly.Then the three indexes of modified bitumen and high and low temperature rheological properties were studied.Finally,the self-healing performance of different asphalt was analyzed and compared.The results show that the addition of two kinds of nanometer materials increases the initial healing temperature of asphalt and reduces the self-healing properties.

关 键 词：沥青 纳米吸波材料 自愈合 性能变化 

分 类 号：U414[交通运输工程—道路与铁道工程]