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焦化蜡油糠醛抽出油制备沥青再生剂的研究.docx

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焦化蜡油糠醛抽出油制备沥青再生剂的研究 Abstract Inrecentyears,theresearchonthepreparationofasphaltrejuvenatorshasattractedincreasingattentionduetothehugepotentialeconomicandenvironmentalbenefits.Inthisstudy,wefocusedonthepreparationofasphaltrejuvenatorsfromtheextractionofcoaltar,waxoil,branaldehyde,andtaroilbydistillation.Theresultsofthestudyshowedthattheobtainedrejuvenatorhasgoodperformanceinimprovingthemechanicalpropertiesanddurabilityofagedasphalt.Thestudyprovidesatheoreticalbasisforthelarge-scalepreparationofasphaltrejuvenatorsfromwastematerials. Introduction Asphaltpavingmaterialsplayacriticalroleinthetransportationinfrastructure,ensuringthesmoothandsafeoperationofroadsandhighways.However,environmentalfactorssuchassunlight,heat,moisture,andchemicalerosioncancausetheagingofasphalt,resultinginbrittleness,cracking,andrutting.Thisdeteriorationnotonlyleadstoanincreaseinmaintenancecostsbutalsojeopardizesthesafetyofroadusers.Theuseofasphaltrejuvenatorshasbeenproposedasasolutiontorejuvenateagedasphaltandrestoreitsoriginalproperties.Asphaltrejuvenatorscanbedefinedasamaterialthatcanreturntheagedasphalttoitsoriginalstateorbetterbyreplenishingorrestoringsomeofitsessentialcomponents.Theidealrejuvenatorimprovesthemechanicalproperties,safeservicelife,andsustainabilityofasphaltpavementwithoutposinganynegativeimpactontheenvironment. Theuseofwastematerials,includingcoaltar,waxoil,branaldehyde,andtaroil,inthepreparationofasphaltrejuvenatorshasgainedconsiderableinterestinrecentyearsduetotheadvantagessuchaslowcostandenvironmentalsustainability.Theextractionofthesematerialsinvolvestheuseofdistillationprocesses,whichremovestheimpuritiesandisolatestheessentialcomponentsrequiredforrejuvenation. MaterialsandMethods Thematerialsusedinthisstudyincludecoaltar,waxoil,branaldehyde,andtaroil.Thedistillationprocesswascarriedouttoextracttherejuvenatorfromthesematerials.Theextractedrejuvenatorwasatransparentviscousliquid.Thesofteningpoint,penetration,andviscosityoftherejuvenatorweremeasuredaccordingtostandardtestm