冷补钢渣沥青混合料的制备与性能研究  

Preparation and Performance of Cold Filling Asphalt Mixture with Steel Slag

作　　者：刘新 陆瑞标 杨林 闫福宁 郭亮涛 刘东 

机构地区：[1]龙游县公路港航与运输管理中心,浙江衢州324400 [2]龙游县县乡公路规划建设管理所,浙江衢州324400 [3]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168 [4]北京韩建河山管业股份有限公司,北京102400 [5]辽宁标普检测技术有限公司,辽宁沈阳110167

出　　处：《混凝土世界》2025年第2期43-46,共4页China Concrete

基　　金：辽宁省科技厅重点研发项目(2024JH2/102500102)。

摘　　要：本文以100#柴油为稀释剂,加入胺类抗剥落剂,通过加热溶解,制得液态冷补沥青;再通过沥青性能测试,优化了冷补沥青的制备工艺;最后,以钢渣为粗集料制备了钢渣基冷补沥青混合料并评价其相关性能。结果表明:冷补沥青的稀释剂最佳掺量为14%,与钢渣的粘附性为5级;以LB-13型级配验证冷补钢渣沥青混合料的路用性能,其马歇尔稳定度为5.63kN,浸水马歇尔稳定度为4.71kN,残留稳定度为83.6%,低温破坏应变为2365με,破损率为6.1%,符合国家相关技术规范要求;冷补钢渣沥青混合料在2.45 GHz下的介电常数为6.90,其介电性能优于同频率下的石灰岩集料;经过8次破坏-愈合循环试验后,冷补钢渣沥青混合料的愈合率仍然超过50%,显示出优异的自愈合性能。In this research,liquid cold filling asphalt is prepared by utilizing 100#diesel as a diluent,integrating an amine-based anti-stripping agent,and facilitating its dissolution through heating.The processing is refined further through virginal asphalt performance testing.Subsequently,steel slagbased cold filling asphalt mixtures are obtained,employing steel slag as the coarse aggregate,and their pertinent properties are meticulously assessed.The results show that the optimal dosage of the diluent in the cold filling asphalt is 14%,achieving an adhesion rating of 5 with steel slag.The pavement performance of the cold filling steel slag asphalt mixture are validated using the LB-13 gradation.Notably,it exhibites a Marshall stability of 5.63 kN,an immersion Marshall stability of 4.71 kN,a residual stability of 83.6%,a low-temperature failure strain of 2365με,and a failure rate of 6.1%,all aligning with the stipulated requirements of pertinent national technical specifications.Moreover,the cold filling steel slag asphalt mixture demonstrated superior dielectric properties,with a dielectric constant of 6.90 at 2.45 GHz,outperforming limestone aggregates under the same frequency.Intriguingly,after enduring eight cycles of damage-healing experiments,the healing rate of the cold filling steel slag asphalt mixture surpasses 50%,highlighting its exceptional self-healing capabilities.

关 键 词：冷补沥青混合料 钢渣 路用性能 自愈合 

分 类 号：U41[交通运输工程—道路与铁道工程]