混配型钢渣沥青混合料抗滑耐久性能研究  

Study on the skid durability of mixed steel slag asphalt mixture

作　　者：张争奇[1] 梁庆武 郑文章 姜旭 鲁春晖 ZHANG Zheng-qi;LIANG Qing-wu;ZHENG Wen-zhang;JIANG Xu;LU Chun-hui(Key Laboratory of Highway Engineering in Special Areas,Ministry of Education,Chang’an University,Xi’an 710064,China;Hubei Transportation Planning and Design Institute Co.,Ltd.,Wuhan 430051,China;Tangshan Highway Construction Management Center,Tangshan 063300,China;Tangshan Highway Construction Corporation,Tangshan 063300,China)

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]湖北省交通规划设计院股份有限公司,湖北武汉430051 [3]唐山公路建设管理中心,河北唐山063300 [4]唐山公路建设总公司,河北唐山063300

出　　处：《应用化工》2023年第12期3265-3269,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(52278428)。

摘　　要：探究钢渣掺配比例、掺配集料类型对钢渣沥青混合料抗滑摆值和构造深度的影响;在此基础上,引入国际摩擦指数,综合评价了钢渣沥青混合料抗滑耐久性能;同时结合原子力显微镜及X射线衍射实验,分析钢渣沥青混合料抗滑耐久性能提升机理。结果表明,摆值稳定终值随钢渣掺量增加而提高,而构造深度稳定终值在钢渣掺量为75%时达到最大;推荐75%钢渣+25%玄武岩/石灰岩的混配型混合料组成方案;其抗滑性改善原理是钢渣表面凸起和凹陷形貌较多,且内部矿物硬度差距大,有很强差异磨光作用,进而延缓沥青混合料抗滑性能的衰减。The effects of steel slag blending ratio and aggregate type on the anti-skid durability of steel slag asphalt mixture were analyzed.Next,the anti-skid durability of steel slag asphalt mixtures with different blending composition was comprehensively evaluated with index IFI.In addition,the mechanism of anti-skid durability was investigated through combination of atomic force microscopy(AFM)and X-ray diffraction(XRD)tests.The results show that with the increase of steel slag dosage,final steady-state value of the pendulum increases,while that of the texture depth reaches the maximum when the steel slag dosage amount is 75%.The combination of 75%steel slag+25%basalt/limestone is recommended.The more angular morphology of the steel slag and its harder mineral component than basalt and limestone exhibit their diversity polishing values under repeated loading,thereby delaying the attenuation of the anti-skid performance of the asphalt mixture.

关 键 词：道路工程 钢渣沥青混合料 差异磨耗 抗滑耐久性 提升机理 

分 类 号：TQ050.4[化学工程] U414[交通运输工程—道路与铁道工程]