预览加载中，请您耐心等待几秒...

煤沥青改性石油沥青性能分析.docx

预览
1/3
2/3
3/3

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

煤沥青改性石油沥青性能分析 Title:AnalysisofthePerformanceofModifiedAsphaltUsingCoalTarPitch Introduction: Asphaltisacrucialcomponentinroadconstructionduetoitsexcellentadhesiveandwaterproofingproperties.However,traditionalasphalthascertainlimitationsintermsofdurabilityandagingcharacteristics.Toaddresstheseissues,researchershavebeenworkingonimprovingasphaltperformancebymodifyingitwithvariousmaterials,includingcoaltarpitch.Thispaperaimstoanalyzetheperformanceofasphaltmodifiedwithcoaltarpitchandexamineitspotentialasasustainableandefficientalternativeforroadconstruction. 1.ChemicalCompositionofCoalTarPitch: Coaltarpitchisaviscousblackliquidobtainedfromthedistillationofcoaltar.Itprimarilyconsistsofpolycyclicaromatichydrocarbons(PAHs),alongwithsmalleramountsofnitrogen,oxygen,sulfur,andotherelements.Thepresenceofthesecompoundsgivescoaltarpitchitsuniqueproperties,makingitanidealcandidateforasphaltmodification. 2.PropertiesofModifiedAsphalt: 2.1ImprovedStrengthandStability: Coaltarpitchmodificationenhancesthestrengthandstabilityofasphaltpavements.Theadditionofcoaltarpitchincreasestheviscoelasticpropertiesandbinder-aggregateadhesion,yieldingimprovedruttingresistance,fatiguecrackingresistance,andoverallpavementdurability. 2.2EnhancedAgingResistance: Asphaltpavementsaresubjectedtovariousenvironmentalfactors,suchasUVradiationandoxidation,whichleadtoaginganddegradation.Coaltarpitchmodificationhelpstomitigatetheseissuesbyprovidinggreaterresistancetoagingandoxidativedegradation.ThepresenceofaromaticcompoundsincoaltarpitchactsasanaturalUVabsorber,reducingtheharmfuleffectsofsunlight. 2.3ImprovedWaterproofing: Oneoftheprimaryfunctionsofasphaltinroadconstructionistoprovidewaterproofing.Theadditionofcoaltarpitchenhancestheasphalt'sabilitytoresistmoisturepenetration,therebyreducingtheriskofpavementdegradationcausedbywaterdamage,suchaspotholesandcracking. 3.PerformanceEvaluationMethods: Toassesstheperformanceofcoaltarpitch-modifiedasphalt,severaltestingmethodscanbeemployed,including: 3.1MechanicalTests