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1、FuelVol.75No.2,pp.125-132,1996Copyright©1996ElsevierScienceLtdPrintedinGreatBritain.AllrightsreservedELSEVIER0016-2361(95)00253-700l6-2361/96/$15.00+0.00SIMSandESCAcharacterizationofbitumenreinforcedwithpyrolyticcarbonblackHansDarmstadt,AbdelkaderChaala*,Chris
2、tianRoy*andSergeKaliaguineD~partementdeg~niechimique,Universit~Lava/,Cit~Universitaire,Quebec,CanadaGIK7P4*lnstitutPyrovacInc.,1560Ave.duParc-Beauvoir,Sillery,Quebec,CanadaG1T2M4(Received19April1995;revised21August1995)Replacementofcommercialcarbonblackbycarbo
3、nblacksobtainedfromtyrepyrolysis(CBI,)wouldbeaninterestingcommercialapplicationforCBp.RecentworkshowedthatCBpimprovestherheologicalpropertiesofbitumen.ThisimprovementismostprobablyduetointeractionbetweenCBpandasphaltenes,themostpolarandheaviestbitumencomponent
4、s.InthepresentworkasphaltenesfromcommercialandpyrolyticbitumenandaCBp-bitumenmixturewereanalysedbyESCA,SIMSandi.r.spectroscopy.ItwasfoundthattheCBpsurfaceiscoveredwithanon-extractablelayerofbitumencompounds,especiallywitharomaticcompoundswithoutorwithasmallcon
5、centrationofalkylgroups.Asphaltenesfrompyrolyticoilhavefeweralkylgroupsthanasphaltenesfromcommercialoil.ThereforepyrolyticbitumenreinforcedwithCBpshouldbeanattractivematerialforroadconstruction.(Keywords:bitumen;carbonblack;tyrepyrolysis)Approximatelyoneusedty
6、reperpersonisproducedmolecular-weighthydrocarbons.Asphaltenesaredis-annuallyintheindustrializedworld.MostoftheseusedpersedinacontinuousphaseconsistingofamixturetyresaresimplydumpedonlandfillsitesorincineratedI.ofnaphthenearomatics24.AsphaltenesaredefinedasHowe
7、ver,theseformsofdisposalarenotenvironmen-beinginsolubleinn-pentaneorn-heptanebutsolubletallyacceptable.Onlandfillsites,usedtyresrepresentainaromaticsolventssuchasbenzeneandtolueneorinthreattotheenvironment,especiallyifignited,andbycarbondisulfideandchloroform.
8、Asphaltenesmaybeincinerationonlythethermalvalueofthetyresisused,precipitatedfrombitumenbytheadditionofanon-polarwhilevaluablechemicalcompoundsarelost.Onthemisciblesolvent(e.g.apara
