Modern two-component modifiers inhibiting the aging process of road bitumen

dc.abstract.enThe bitumen physicochemical properties of are constantly changing during both the production of asphalt mixtures and the service of road pavements. These changes involve bitumen hardening which consequently cause formation of defects and cracks in road pavements. Therefore, in recent years, prolonging road pavement life by inhibiting the bitumen aging process is a key trend in road engineering, bringing many economic, environmental and social benefits. In line with these trends, the main objective of this research was inhibition of short-term bitumen aging by two-component chitosan-based polymer composites containing ligands with different chemical structures, i.e. polyaniline, methacrylamide and 2-acrylamido-2-methylpropanesulfonic acid. This paper presents their effect on the TFOT aging process, as well as physicochemical and structural changes. Studies show that the strongest anti-aging properties are demonstrated by the chitosan:polyaniline composite. Its use at 2 % w/w allows it to maintain 90 % of the primary penetration value, increase the softening point by only 2°C and increase dynamic viscosity by 17% in comparison to non-aged modified bitumen. In addition, the use of the composite makes it possible to reduce the degree of bitumen components oxidation, which is seen from the reduction of carbonyl and sulfoxide indices by more than 33 % and 47 %, respectively.
dc.affiliationPolitechnika Lubelska
dc.affiliationPolitechnika Lubelska
dc.affiliationPolitechnika Lubelska
dc.contributor.authorMalinowski, Szymon
dc.contributor.authorWoszuk, Agnieszka
dc.contributor.authorFranus, Wojciech
dc.date.access2023-11-02
dc.date.accessioned2025-01-31T09:46:50Z
dc.date.available2025-01-31T09:46:50Z
dc.date.copyright2023-11-02
dc.date.issued2023
dc.description.accesstimeat_publication
dc.description.articlenumber133838
dc.description.financepublication_nocost
dc.description.fininstitutionNarodowe Centrum Nauki (NCN)
dc.description.projectMINIATURA
dc.description.versionfinal_published
dc.description.volume409
dc.identifier.doi10.1016/j.conbuildmat.2023.133838
dc.identifier.eissn1879-0526
dc.identifier.orcid0000-0002-9437-9757
dc.identifier.orcid0000-0003-4854-8553
dc.identifier.orcid0000-0002-4599-3427
dc.identifier.project2021/05/X/ST8/00161
dc.identifier.urihttps://hdl.handle.net/20.500.14629/18391
dc.languageen
dc.pbn.affiliationcivil engineering, geodesy and transport
dc.relation.ispartofConstruction and Building Materials
dc.relation.issn0950-0618
dc.relation.pages1-14
dc.rightsCC-BY-4.0
dc.share.articleOTHER
dc.subject.enshort-term bitumen aging
dc.subject.enpolymer composite
dc.subject.enFTIR
dc.subject.enVAI
dc.subject.enSPI
dc.subject.enPRR
dc.subject.enNMR
dc.subject.enAFM
dc.subtypeResearchArticle
dc.titleModern two-component modifiers inhibiting the aging process of road bitumen
dc.typeArticle
dspace.entity.typePublicationen
oaire.citation.volume409
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