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EFFECT OF LAYERED DOUBLE HYDROXIDES ADDITION ON THE AGEING AND SELF-HEALING PROPERTIES OF ASPHALT BINDER

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dc.creatorJOSÉ ERNESTO NORAMBUENA CONTRERAS
dc.date2019
dc.date.accessioned2025-01-10T15:11:05Z
dc.date.available2025-01-10T15:11:05Z
dc.date.issued2019
dc.description.abstractIN THIS PAPER, THE EFFECTS OF LAYERED DOUBLE HYDROXIDES (LDHS) INCORPORATION ON THE AGEING RESISTANCE AND SELF-HEALING PROPERTIES OF ASPHALT BINDER WERE STUDIED. MATRIX ASPHALT (MA) AND LDHS MODIFIED ASPHALT (LMA) BINDERS WERE AGED BY SHORT-TERM THERMAL OXIDATION AND ULTRAVIOLET AGEING AND THEIR AGEING PERFORMANCE WAS CHARACTERIZED THROUGH THE ANALYSIS OF THE SARA FRACTIONS AND TEMPERATURE SWEEP TEST. FREQUENCY SWEEP TEST AND CAPILLARY FLOW TEST WERE CONDUCTED TO CHARACTERIZE THE FLUIDITY OF THE ASPHALTS, AND FATIGUE LIFE RECOVERY TEST WAS USED TO CHARACTERIZE THE ASPHALT SELF-HEALING PROPERTIES. THE MAIN RESULTS INDICATE THAT UNDER THE SAME AGEING CONDITIONS, THE LIGHT COMPONENT CONTENTS OF LDHS MODIFIED ASPHALT ARE HIGHER THAN THAT OF MATRIX ASPHALT AND THE COMPLEX MODULUS INCREMENT OF LMA IS LOWER THAN THAT OF MATRIX ASPHALT. IT MEANS THAT LDHS MODIFIED ASPHALT HAS BETTER ANTI-AGEING PERFORMANCE. BESIDES, LDHS MODIFIED ASPHALT HAS HIGHER FLUIDITY AND LOWER SELF-HEALING THRESHOLD TEMPERATURE THAN MATRIX ASPHALT BINDER UNDER THE SAME AGEING CONDITIONS, INDICATING THAT THE INCORPORATION OF LDHS CAN EFFECTIVELY RETARD THE REDUCTION OF ASPHALT FLOW CAPACITY DUE TO AGEING. IT WAS ALSO FOUND THAT ASPHALT BINDER CONTAINING LDHS HAD BETTER SELF-HEALING POTENTIAL DUE TO THE IMPROVEMENT OF THE AGEING RESISTANCE. IT WAS CONCLUDED THAT THE ADDITION OF LDHS CAN EFFECTIVELY IMPROVE THE AGEING RESISTANCE AND SELF-HEALING PROPERTIES OF ASPHALT BINDER.
dc.formatapplication/pdf
dc.identifier.doi10.1088/2053-1591/ab13c5
dc.identifier.issn2053-1591
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/10821
dc.languagespa
dc.publisherMATERIAL RESEARCH EXPRESS
dc.relation.uri10.1088/2053-1591/ab13c5
dc.rightsPUBLICADA
dc.titleEFFECT OF LAYERED DOUBLE HYDROXIDES ADDITION ON THE AGEING AND SELF-HEALING PROPERTIES OF ASPHALT BINDER
dc.title.alternativeEFECTO DE LA ADICIÓN DE HIDRÓXIDOS DOBLES EN CAPAS SOBRE LAS PROPIEDADES DE ENVEJECIMIENTO Y AUTOCURACIÓN DEL AGLUTINANTE ASFÁLTICO
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA CIVIL Y AMBIENTAL
ubb.SedeCONCEPCIÓN
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