Physicochemical and aging characterisation of bio-binders from pine wood resin for paving applications

Autor(es)

Castro-Alonso, Maria Jose ; Espinosa, Leidy V. V. ; Franco Marcelino, Paulo Ricardo ; Vasconcelos Savasini, Kamilla ; Dos Santos, Julio Cesar ; Moraes, Raquel ; da Silva, Silvio Silverio ; Bernucci, Liedi L. B.

• Tipo de documento: Artigo Científico
• Fonte: Road Materials and Pavement Design; v. N/A, p. 16-pg., 2023-02-18.

Resumo

This 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 degrees C, while Bio B showed 21 (0.1 mm) and 57 degrees C, respectively. AC 30/45 showed a penetration grade of 30 (0.1 mm) and softening point of 55 degrees 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. (AU)

• Processo FAPESP: 19/14931-2 - Utilização de biomassa lignocelulósica no desenvolvimento de bioligantes para a cadeia de pavimentação
• Beneficiário: Maria Jose Castro Alonso
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 17/25708-7 - Reologia e química de ligantes asfálticos e bioligantes: ferramentas para a compreensão do comportamento mecânico, envelhecimento e deterioração dos revestimentos de pavimentos
• Beneficiário: Kamilla Vasconcelos Savasini
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores