A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Characterisation of modified asphalt mixtures with lignin of pinus and eucalyptus woods
Lignin is a natural polymer that has antioxidant properties. However, a supplied lignin’s physical, chemical, and rheological behaviour will differ from the source. Thus, the objective of this work was to investigate the mechanical performance of asphalt mixtures produced with asphalt binders modified by lignins at the contents of 0, 3, 6, and 9%, from pinus and eucalyptus sawdust. The mixtures were evaluated by performing the Splitting Tensile Strength Test, Lottman, Resilient Modulus, and Dynamic Modulus. The results pointed to lignin, both tested, as a good natural polymer due to the increase in resilience of the asphalt mixtures and reduction of susceptibility to moisture for the proposed contents. Therefore, it is suitable for field use. Lignin can be identified as a residual modifier that can provide longer service life to asphalt coatings, presenting itself as an alternative modifier to the synthetic elastomeric polymers. The addition of 3% pinus lignin presented the best mechanical performance, followed by the addition of 9% eucalyptus lignin.
Characterisation of modified asphalt mixtures with lignin of pinus and eucalyptus woods
Lignin is a natural polymer that has antioxidant properties. However, a supplied lignin’s physical, chemical, and rheological behaviour will differ from the source. Thus, the objective of this work was to investigate the mechanical performance of asphalt mixtures produced with asphalt binders modified by lignins at the contents of 0, 3, 6, and 9%, from pinus and eucalyptus sawdust. The mixtures were evaluated by performing the Splitting Tensile Strength Test, Lottman, Resilient Modulus, and Dynamic Modulus. The results pointed to lignin, both tested, as a good natural polymer due to the increase in resilience of the asphalt mixtures and reduction of susceptibility to moisture for the proposed contents. Therefore, it is suitable for field use. Lignin can be identified as a residual modifier that can provide longer service life to asphalt coatings, presenting itself as an alternative modifier to the synthetic elastomeric polymers. The addition of 3% pinus lignin presented the best mechanical performance, followed by the addition of 9% eucalyptus lignin.
Characterisation of modified asphalt mixtures with lignin of pinus and eucalyptus woods
Duarte Mendonça, Ana Maria Gonçalves (author) / Melo Neto, Osires de Medeiros (author) / Rodrigues, John Kennedy Guedes (author) / Batista de Lima, Robson Kel (author) / Silva, Ingridy Minervina (author) / Marques, Agilio Tomaz (author)
Australian Journal of Civil Engineering ; 21 ; 253-264
2023-07-03
12 pages
Article (Journal)
Electronic Resource
Unknown
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