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RHEOLOGICAL AND CHEMICAL EFFECTS OF WASTE TIRE PYROLYTIC OIL AND ITS ENCAPSULATION AS REJUVENATORS ON ASPHALT BINDERS

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dc.creatorJOSÉ LUIS CONCHA FUENTEALBA
dc.date2025
dc.date.accessioned2026-01-16T17:42:55Z
dc.date.available2026-01-16T17:42:55Z
dc.date.issued2025
dc.description.abstractTHIS STUDY INVESTIGATES THE RHEOLOGICAL AND CHEMICAL EFFECTS OF WASTE TIRE PYROLYTIC OIL (TPO) AND ITS ENCAPSULATION (POC) AS REJUVENATORS FOR ASPHALT BINDERS. DRIVEN BY THE NEED FOR SUSTAINABLE AND EFFECTIVE STRATEGIES TO RECYCLE RECLAIMED ASPHALT PAVEMENT (RAP), WE INVESTIGATED THE USE OF TPO IN TWO FORMS: AS A LIQUID ADDITIVE AND AS POLYMER CAPSULES. THE CAPSULES, MADE IN A 1:5 MASS RATIO (ONE PART POLYMER, FIVE PARTS TPO), WERE ASSESSED THROUGH TWO METHODS: RHEOLOGICAL TESTS (DYNAMIC MODULUS AND PHASE ANGLES) AND CHEMICAL COMPOSITION ANALYSIS (CARBONYL AND SULFOXIDE INDICES). THE BINDERS UNDERWENT THREE AGING LEVELS: UNAGED, PRIMARY AGING (RTFO), AND SECONDARY AGING (PAV). FIVE LIQUID TPO DOSAGES (1%, 2%, 4%, 6%, 9% BY WEIGHT) AND THREE ENCAPSULATED TPO DOSAGES (6%, 9%, 12% BY WEIGHT) WERE TESTED. RESULTS SHOW THAT TPO REDUCES STIFFNESS, INCREASES VISCOUS RESPONSE, AND LOWERS AGING INDICES, WITH HIGHER DOSAGES ENHANCING THE EFFECT. QUANTITATIVELY, 9% LIQUID TPO RESTORES PAV-AGED BINDER TO NEAR-UNAGED CONDITIONS, SUITABLE FOR RAP RECYCLING, WHILE 4% RELEASE FROM POCS ACHIEVES REJUVENATION COMPARABLE TO RTFO-AGED BINDERS, ENABLING SELF-HEALING APPLICATIONS. THE ESTIMATED RELEASE OF TPO FROM POCS DURING MIXING WAS 20-40%, ENSURING A GRADUAL SOFTENING EFFECT. THESE FINDINGS HIGHLIGHT THE POTENTIAL OF TPO AND POC IN ENHANCING ASPHALT DURABILITY AND RECYCLING.
dc.formatapplication/pdf
dc.identifier.doi10.3390/polym17182449
dc.identifier.issn2073-4360
dc.identifier.issn2073-4360
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/14333
dc.language
dc.publisherPolymers
dc.relation.uri10.3390/polym17182449
dc.rightsOPEN ACCESS
dc.subjectRejuvenator
dc.subjectAsphalt
dc.subjectEncapsulation
dc.subjectRecycling
dc.subjectWaste tires
dc.subjectPyrolysis
dc.titleRHEOLOGICAL AND CHEMICAL EFFECTS OF WASTE TIRE PYROLYTIC OIL AND ITS ENCAPSULATION AS REJUVENATORS ON ASPHALT BINDERS
dc.typeARTÍCULO
dspace.entity.typePublication
oaire.licenseConditionCC BY 4.0
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA CIVIL Y AMBIENTAL
ubb.SedeCONCEPCIÓN
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