钢渣沥青混合料微波加热自愈合性能研究  

Self-Healing Performance of Steel Slag Asphalt Mixtures by Microwave Heating

作　　者：向阳开[1] 刘威震 赵毅 张庆宇 张艳娟[4] XIANG Yangkai;LIU Weizhen;ZHAO Yi;ZHANG Qingyu;ZHANG Yanjuan(School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;School of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Department of Civil Engineering,Hebei Jiaotong Vocational and Technical College,Shijiazhuang 050091,China;Hebei Qiancao Expressway Development Co.,Ltd.,Tangshan 063200,China)

机构地区：[1]重庆交通大学土木工程学院,重庆400074 [2]重庆交通大学材料科学与工程学院,重庆400074 [3]河北交通职业技术学院土木工程系,石家庄050091 [4]河北迁曹高速公路开发有限公司,唐山063200

出　　处：《硅酸盐通报》2022年第2期667-677,共11页Bulletin of the Chinese Ceramic Society

基　　金：河北省交通运输厅科技项目(QC2018-3)。

摘　　要：为了研究钢渣沥青混合料微波加热自愈合性能,制备了全石型、粗石细钢型、粗钢细石型、全钢型4种沥青混合料,采用热常数分析仪和矢量网络分析仪测试了沥青混合料的热参数和电磁参数,利用热电偶温度传感器和红外测温仪测试了沥青混合料的温度分布,并对比分析了COMSOL软件数值模拟温度场与试验温度分布;最后,采用三点弯曲破坏试验评价了沥青混合料的自愈合性能。结果表明:4种沥青混合料具有不同的微波吸收性能和传热性能,会对沥青混合料的加热速率产生一定影响;钢渣的掺入大大提高了沥青混合料的微波加热性能,且3种钢渣沥青混合料中粗石细钢型表现出较好的加热均匀性;COMSOL软件能够较好地模拟沥青混合料在微波加热下的温度分布;相比于全石型沥青混合料,粗石细钢型、粗钢细石型、全钢型沥青混合料的自愈合性能分别提高了1.11倍、1.14倍、1.11倍,钢渣的掺入较好地提高了沥青混合料的自愈合性能。To research the self-healing performance of steel slag asphalt mixtures by microwave heating,four kinds of asphalt mixtures were prepared:whole stone type,coarse stone fine steel slag type,coarse steel slag fine stone type and whole steel slag type.The thermal and electromagnetic parameters of asphalt mixtures were measured by thermal constant analyzer and vector network analyzer.The temperature distribution of asphalt mixtures was measured by thermocouple temperature sensor and infrared thermometer.The numerical simulation temperature field of COMSOL software and test temperature distribution were compared and analyzed.Finally,the self-healing performance of asphalt mixtures was evaluated by three-point bending failure test.The results show that the four asphalt mixtures have different microwave absorption and heat transfer properties,and have a certain impact on the heating rate of asphalt mixtures.The addition of steel slag greatly improves the microwave heating performance of asphalt mixtures,and the coarse stone fine steel slag in the three steel slag asphalt mixtures shows better heating uniformity.COMSOL software simulates the temperature distribution of asphalt mixtures under microwave heating.Compared with the whole stone asphalt mixtures,the self-healing performance of coarse stone fine steel slag,coarse steel slag fine stone and whole steel slag asphalt mixture increase by 1.11 times,1.14 times and 1.11 times,respectively.The addition of steel slag improves the self-healing performance of asphalt mixture.

关 键 词：道路工程 钢渣 沥青混合料 微波加热 数值模拟 自愈合性能 

分 类 号：U416.217[交通运输工程—道路与铁道工程]