Produção Nacional
Revisado por pares
Physicochemical and aging characterisation of bio-binders from pine wood resin for paving applications
2023; Taylor & Francis; Volume: 24; Issue: sup1 Linguagem: Inglês
10.1080/14680629.2023.2180306
ISSN2164-7402
AutoresM. J. Castro-Alonso, Leidy V. Espinosa, Paulo Ricardo Franco Marcelino, Kamilla Vasconcelos, Joana Carolina Freire Sandes Santos, Raquel Moraes, Sílvio Silvério da Silva, Liedi Légi Bariani Bernucci,
Tópico(s)Natural Fiber Reinforced Composites
ResumoAbstractThis study characterised two bio-binders (named Bio A and Bio B) derived from pine wood resins and designed for full replacement of asphalt binder. Bio A and Bio B were compared to a petroleum-based asphalt binder (AC 30/45). Elemental analysis, Fourier-Transform Infrared Spectroscopy, Gas Chromatography-Mass Spectrometry, Thermogravimetric analysis, and Linear Viscoelastic characterisation were applied to evaluate the materials studied. The susceptibility to aging was evaluated by comparing unaged and short-term aged samples of the three binders. Bio A showed a penetration grade of 29 (0.1 mm) and softening point of 55.2°C, while Bio B showed 21 (0.1 mm) and 57°C, respectively. AC 30/45 showed a penetration grade of 30 (0.1 mm) and softening point of 55°C. Bio B was found as more prone to aging than Bio A and AC30/45. This result might be related to the higher presence of saturated fatty acid methyl esters in Bio B.KEYWORDS: Bio-binderspine wood resinchemical analysisthermal analysisrheologyfull replacement of asphalt binder Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors would like to acknowledge National Land Transport Agency (Agência Nacional de Transportes Terrestres, ANTT) (MGO/ENG/028/2018), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, grant number 88882.377454/2019-01), and Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP, grant number 2017/25708-7, grant number 2019/14931-2) for the financial support to the research, and to QUIMIGEL and Greca for providing the materials used in the study.
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