Aug.2023年8月ShanxiScience&TechnologyofTransportationNo.4第4期（总第283期）山西交通科技胶粉对基质沥青路用性能的影响研究梁毓珂（山西省公路局长治分局，山西长治046600)摘要：为研究脱硫胶粉改性沥青相对普通胶粉改性沥青的优越性，对两种沥青开展了红外光谱测试、黏度试验、存储稳定性试验、高温性能试验、老化性能试验，分析了两种沥青路用性能的优劣。结果表明：两种胶粉改性沥青生产过程物理共混占主导；脱硫胶粉改性沥青的拌和温度、压实温度明显低于普通胶粉改性沥青；静止状态下两种胶粉改性沥青离析均很严重，但通过搅拌，脱硫胶粉的性能恢复速度远快于普通胶粉改性沥青；RTFOT脱硫胶粉改性沥青的车辙因子大于普通胶粉改性沥青，但普通胶粉改性沥青的抗老化性能优于脱硫胶粉改性沥青。关键词：公路工程；脱硫胶粉；改性沥青；性能试验中图分类号：U414.75文献标识码：A文章编号：1006-3528（2023）04-0008-04StudyonInfluencesofRubberPowderonRoadPerformanceofMatrixAsphaltLIANGYuke(ChangzhiBranchofShanxiProvincialHighwayBureau,Changzhi,Shanxi046600,China)Abstract:Tostudythesuperiorityofdesulfurizedrubberpowdermodifiedasphaltoverordinaryrubberpowdermodifiedasphalt,thispaperconductedtheinfraredspectroscopytest,viscositytest,storagestabilitytest,high-temperatureperformancetest,andagingperformancetesttoanalyzetheadvantagessanddisadvantagesofthesetwotypesofasphalt.Theresultsshowedthatthephysicalblendingdominatedtheproductionprocessofthetwotypesofrubberpowdermodifiedasphalt.Themixingtemperatureandcompactiontemperatureofdesulfurizedrubberpowdermodifiedasphaltweresignificantlylowerthanthoseofordinaryrubberpowdermodifiedasphalt.Underthestaticstate,thesegregationofthesetwoasphaltswassevere,butthroughthemixing,theperformancerecoveryofdesulfurizedrubberpowdermodifiedasphaltwasfasterthanthatofordinaryrubberpowdermodifiedasphalt.TheruttingfactoroftheRTFOTdesulfurizedrubberpowdermodifiedasphaltwaslargerthanthatofordinaryrubberpowdermodifiedasphalt,whiletheagingperformanceofordinaryrubberpowdermodifiedasphaltwasbetterthanthatofdesulfurizedrubberpowdermodifiedasphalt.Keywords:highwayengineering;desulfurizedrubberpowder;modifiedasphalt...
