IOPConferenceSeries:EarthandEnvironmentalSciencePAPER•OPENACCESSEnvironmentalBenefitAnalysisofHotCentralPlantRecyclingAsphaltPavementBasedonLCATocitethisarticle:DLZhuetal2021IOPConf.Ser.:EarthEnviron.Sci.766012101Viewthearticleonlineforupdatesandenhancements.YoumayalsolikeThemicrostructureandevaluationindexofreclaimedasphaltpavementNingShi-Sustainabilityofusingreclaimedasphaltpavement:based-reviewedevidenceMEnieb,MohammedAbbasHasanAl-Jumaili,HamidAthabEedanAl-Jameeletal.-ThereinforcementandhealingofasphaltmasticmixturesbyrejuvenatorencapsulationinalginatecompartmentedfibresATabakovi,WPost,DCanteroetal.-ThiscontentwasdownloadedfromIPaddress119.164.73.170on17/12/2024at08:50ContentfromthisworkmaybeusedunderthetermsoftheCreativeCommonsAttribution3.0licence.Anyfurtherdistributionofthisworkmustmaintainattributiontotheauthor(s)andthetitleofthework,journalcitationandDOI.PublishedunderlicencebyIOPPublishingLtdIWRED2021IOPConf.Series:EarthandEnvironmentalScience766(2021)012101IOPPublishingdoi:10.1088/1755-1315/766/1/0121011EnvironmentalBenefitAnalysisofHotCentralPlantRecyclingAsphaltPavementBasedonLCADLZhu1,2,JWang1,LXGu11SchoolofCivilEngineering,CentralSouthUniversity,HunanProvince,China,4100752Email:1203170206@csu.edu.cnTelephone:17873149632Abstract.Inordertodeterminetheenergy-savingandemission-reductioneffectsoftheapplicationofhotcentralplantrecyclinginthehighwayasphaltpavementmaintenanceproject,thisstudyselectsaroadsectionofoverhaulprojectinTongrenastheanalysisobject,andadopttheenvironmentalbenefitanalysismethodbasedonlifecycleassessmenttoanalyzetheenergyconsumptionandenvironmentalemissionsofhotcentralplantrecyclingandhotmixasphalt.Thecomparisonshowsthattheapplicationofhotcentralplantrecyclinginhighwayasphaltpavementmaintenanceprojecthasgoodenergysavingandemissionreductionbenefits,andtheaggregateandasphaltproductionstagearethemaincomponents.Moreover,undertheconditionofensuringtheroadperformanceofrecycledpavement,withtheincreasingproportionofreclaimedasphaltpavement,theenvironmentalbenefitofrecycledpavementishigher.Whilewiththeincreaseofreclaimedasphaltpavementtransportationdistance,theenvironmentalbenefitpresentsadownwardtrend.1.IntroductionThetransportationsectorgreatlyinfluencethesustainabledevelopmentofasociety,contributingtoairpollutionfromvehicularemissions,globalwarming,consumptionofenergyresources,disturbanceofnaturalspacefrominfrastructureconstruction,andnoisepollution[1].Intherecent40years,highwayconstructionhasmadesignificantprogressinChina.AccordingtothestatisticsofMinistryofTransportofthePeople’sRepublicofChina,bytheendof2019,thetotalmileageofChina’sroadsreached5.0125millionkilometers.Amongthem,themileageofhighwaysis149,600kilometers[2].Astimepassed,thehighwaycompletedearlyhasenteredtherepairstagesuccessively,andtheamountofreclaimedasphaltpavement(RAP)producedinpavementmaintenanceengineeringisalsoincreasing.RAPisamixture,includingagedasphaltbinderandaggregatesproducedbyrecyclinghotmixasphalt(HMA)knownasthemostcommonrecycledmaterialsusedinflexiblepavements[3].Thehigh-pricedoriginalbindercanbereplacedwithRAPasaless-costlybindertoprepareeco-friendlypavements[4].Forexample,usingRAPaswastematerialinpavementstructuredecreasetheemissionofgreenhousegasintotheatmosphereleadingtoimprovementintheenvironmenthealth[5-6].Inordertoreduceenvironmentalburdenassociatedwithasphal...
