Temperature effect of asphalt production on the thermo-chemical properties of Kraft lignin

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dc.contributor.authorMarquez, J. Waldo
dc.contributor.authorFuentes, Valentina
dc.contributor.authorRueda, Eduardo J.
dc.contributor.authorTundidor-Camba, Alain
dc.contributor.authorEscalona, Nestor
dc.contributor.authorNorambuena-Contreras, Jose
dc.contributor.authorGonzalez, Alvaro
dc.date.accessioned2025-01-20T16:08:28Z
dc.date.available2025-01-20T16:08:28Z
dc.date.issued2024
dc.description.abstractGlobal warming has triggered a series of strategies and efforts to reduce greenhouse gas emissions and increase the reuse and recycling into asphalt pavements. One of these, is the reduction of production temperatures of asphalt mixtures, and the other is using sustainable antioxidants, such as Kraft lignin, with high phenolic content. Kraft lignin is usually mixed at high temperatures without considering the effect of temperature on its antioxidant properties. This research aimed to study the impact of the production temperatures of asphalt mixtures on the thermo-chemical properties of Kraft lignin and its antioxidant capacity. To evaluate these properties, thermogravimetry, infrared spectroscopy, and DPPH tests were done. To validate the results, bitumen-lignin blends were prepared considering representative temperatures for Hot-Mix-Asphalt (HMA), 160 degrees C, and for Warm-Mix-Asphalt (WMA), 135 degrees C. Bitumen-lignin blends were prepared considering 0% and 20% Kraft lignin by total weight bitumen. The blended samples, unaged and aged. were evaluated considering mechanical, rheological, and chemical properties. The main conclusion of the study demonstrated that although Kraft lignin can be used in HMA, using it in mixtures with lower temperatures conserve its properties. WMA production temperatures preserve Kraft lignin's chemical properties, increasing the durability and resilience of bitumen throughout its service life.
dc.description.funderNational Research and Development Agency (ANID) through the Research Project FONDECYT Regular
dc.fuente.origenWOS
dc.identifier.doi10.1080/10298436.2024.2400563
dc.identifier.eissn1477-268X
dc.identifier.issn1029-8436
dc.identifier.urihttps://doi.org/10.1080/10298436.2024.2400563
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90080
dc.identifier.wosidWOS:001314439300001
dc.issue.numero1
dc.language.isoen
dc.revistaInternational journal of pavement engineering
dc.rightsacceso restringido
dc.subjectKraft lignin
dc.subjectbitumen
dc.subjectasphalt mixture
dc.subjectthermogravimetric analysis
dc.subjectDPPH
dc.subjectFTIR analysis
dc.titleTemperature effect of asphalt production on the thermo-chemical properties of Kraft lignin
dc.typeartículo
dc.volumen25
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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