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CONTROLLED MICROENCAPSULATION OF REJUVENATORS BY JET VIBRATION TO PROMOTE SELF-HEALING IN BITUMINOUS MATERIALS

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dc.creatorJOSÉ LUIS CONCHA FUENTEALBA
dc.creatorERIK ALPIZAR REYES
dc.creatorJOSÉ ERNESTO NORAMBUENA CONTRERAS
dc.date2023
dc.date.accessioned2025-01-10T15:35:49Z
dc.date.available2025-01-10T15:35:49Z
dc.date.issued2023
dc.description.abstractTHIS STUDY AIMED TO SYNTHESISE ENHANCED BIOCAPSULES CONTAINING OIL AS AN ADDITIVE TO PROMOTE SELF-HEALING IN BITUMINOUS MATERIALS. THE CAPSULES CONSISTED OF A BIOPOLYMERIC MATRIX OF SODIUM ALGINATE AS ENCAPSULATING MATERIAL AND SUNFLOWER COOKING OIL AS A NON-HAZARDOUS REJUVENATING AGENT. OIL WAS INCORPORATED IN FIVE CONCENTRATIONS BY WEIGHT OF ALGINATE, 1:1, 1:3, 1:5, 1:7, AND 1:9, RESPECTIVELY. THUS, FIVE OIL-IN-WATER (O/W) EMULSIONS WERE PREPARED TO SYNTHESISE BIOPOLYMERIC CAPSULES VIA IONIC GELATION USING AN ENCAPSULATOR DEVICE THAT WORKS BY JET VIBRATION TECHNIQUE. THE PHYSICAL PROPERTIES, STABILITY AND DROPLET SIZE DISTRIBUTION WERE MEASURED IN THE O/W EMULSIONS USING MICROSCOPY TECHNIQUES AND LABORATORY TESTS. THE MORPHOLOGICAL AND THE PHYSICAL-MECHANICAL PROPERTIES OF THE BIOCAPSULES WERE ALSO EVALUATED. THE MAIN RESULTS SHOWED THAT THE O/W EMULSIONS INCREASED THEIR VISCOSITY AND PHYSICAL STABILITY WHEN INCREASED THE OIL CONTENT, REDUCING THEIR CREAMING RATE OVER TIME. THE SYNTHESISED BIOCAPSULES PRESENTED SPHERICAL MORPHOLOGY AND HIGH ENCAPSULATION EFFICIENCY. THE SIZE OF THE PRODUCED BIOCAPSULES WAS MAINLY DEPENDENT ON THE SELECTED NOZZLE SIZE, THE FLOW RATE AND VISCOSITY OF THE EXTRUDED O/W EMULSIONS, AND THE VIBRATIONAL FREQUENCY APPLIED AND CONTROLLED ON THE ENCAPSULATOR DEVICE. A REDUCTION IN THE ENCAPSULATED REJUVENATOR CONTENT WAS QUANTIFIED IN THE BIOCAPSULES, RESULTING IN A LOWER VOLUME AND HIGHER DENSITY AND COMPRESSIVE STRENGTH VALUES. FINALLY, THE CAPSULES EFFECTIVELY RESISTED THE LOAD ASSOCIATED TO ON-SITE COMPACTION IN A WAY THAT THEY CAN BE POTENTIALLY
dc.formatapplication/pdf
dc.identifier.doihttps://doi.org/10.1007/978-3-031-21735-7
dc.identifier.issn2211-0852
dc.identifier.issn2211-0844
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/12762
dc.languagespa
dc.publisherPROCEEDINGS OF THE 75TH RILEM ANNUAL WEEK 2021
dc.relation.urihttps://doi.org/10.1007/978-3-031-21735-7
dc.rightsPUBLICADA
dc.subjectO/W emulsion
dc.subjectMicroencapsulation
dc.subjectCompressive strength
dc.subjectBiopolymeric capsules
dc.subjectAsphalt self-healing
dc.titleCONTROLLED MICROENCAPSULATION OF REJUVENATORS BY JET VIBRATION TO PROMOTE SELF-HEALING IN BITUMINOUS MATERIALS
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA CIVIL Y AMBIENTAL
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA CIVIL Y AMBIENTAL
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
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