Thermo-oxidative aging of bitumen

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dc.citation.journalTitleInternational Journal of Pavement Engineering
dc.contributor.authorGamarra, A.
dc.contributor.authorOssa, E.A.
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería de Producciónspa
dc.contributor.researchgroupMateriales de Ingenieríaspa
dc.creatorGamarra, A.
dc.creatorOssa, E.A.
dc.date.accessioned2021-04-12T21:26:43Z
dc.date.available2021-04-12T21:26:43Z
dc.date.issued2018-07-03
dc.description.abstractThermo-oxidative bitumen ageing has been commonly recognised as the main cause of asphalt cracking. The effect of thermo-oxidative ageing level on bitumen has been studied in this work by means of a simple and effective mechanical stirring process. Physical characteristics of the material as Softening Point, Penetration and Viscosity were measured to samples with different ageing conditions. Chemical changes in the material were evaluated by means of SARA fractioning to measure the effect of ageing on the fundamental components of bitumen, and Infrared Spectroscopy in order to study the changes found on the oxidation-related compounds of the material. Microstructural changes on the material were evaluated using atomic force microscopy (AFM) finding that the ageing process on bitumen increases the number and size of the phases related to asphaltenes and resins, and decreases the amount of phases related to aromatics. The changes in chemical and physical characteristics of bitumen were found to be strongly dependent on the carbonyl formation. An extension to a previously proposed oxidation kinetics model was used to predict the fast rate (transient) and constant rate (steady-state) oxidation behaviour of bitumen and its relation to physical properties. The thermo-oxidative changes suffered by bitumen are associated with increasing hardening of the material, making it susceptible to cracking when in contact with aggregate as thin films in flexible pavements. © 2016 Informa UK Limited, trading as Taylor & Francis Group.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=3692
dc.identifier.doi10.1080/10298436.2016.1199876
dc.identifier.issn10298436
dc.identifier.issn1477268X
dc.identifier.otherWOS;000432547900009
dc.identifier.otherSCOPUS;2-s2.0-84976533152
dc.identifier.urihttp://hdl.handle.net/10784/29097
dc.language.isoeng
dc.publisherTaylor and Francis Ltd.
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84976533152&doi=10.1080%2f10298436.2016.1199876&partnerID=40&md5=a0e5203d228f6a2c1af1c64e164f5596
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/1029-8436
dc.sourceInternational Journal of Pavement Engineering
dc.subjectAsphalteng
dc.subjectAtomic force microscopyeng
dc.subjectChemical compoundseng
dc.subjectCrackseng
dc.subjectInfrared spectroscopyeng
dc.subjectMicrostructureeng
dc.subjectOxidationeng
dc.subjectThermooxidationeng
dc.subjectageingeng
dc.subjectBitumeneng
dc.subjectcarbonyleng
dc.subjectChemical and physical characteristicseng
dc.subjectChemical changeeng
dc.subjectMicrostructural changeseng
dc.subjectPhysical characteristicseng
dc.subjectThermo-oxidative ageingeng
dc.subjectBituminous materialseng
dc.titleThermo-oxidative aging of bitumeneng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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