Evaluating the rheological effect of asphalt binder modification using soybean oil

Portugal, Antonio Carlos Xavier; Lucena, Lêda Christiane de Figueiredo Lopes; Costa, Daniel Beserra; Patrício, Jonny Dantas

doi:10.1080/10916466.2017.1322980

Cited by 16 publications

(3 citation statements)

References 7 publications

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“…Pontos de amolecimento mais baixos são, de certa forma, atrativos, visto que esse óleo pode ser utilizado em misturas asfálticas recicladas, confirmando a redução da consistência em temperaturas mais baixas. Comparando os resultados dos ligantes entre si, observa-se que o modificador em todos os teores testados apresentou redução no ponto de amolecimento, corroborando os resultados (Portugal et al, 2018;Wang et al, 2018;Melo Neto et al, 2022c;Silva et al, 2022) que já era um resultado esperado. Além disso, os valores obtidos indicam uma tendência de diminuição do ponto de amolecimento para AB quando se aumenta a quantidade de óleo adicionado, tanto nos resultados antes quanto após o RTFO.…”

Section: Caracterização Física Reológica E Química Do Ligante Asfálticounclassified

Efeitos da adição do óleo de canola nas propriedades mecânicas de misturas asfálticas

Guerra,

Elísio de Figueirêdo Lopes Lucena,

Costa Beserra

et al. 2023

TRANSPORTES

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Nos últimos anos, diversas técnicas foram desenvolvidas com o intuito de reduzir as temperaturas de mistura e compactação das misturas asfálticas convencionais promovendo a redução das emissões de poluentes e do consumo energético, como o uso de aditivos químicos ou orgânicos. Assim, este estudo avaliou os efeitos da adição do óleo de canola no ligante asfáltico PG 64-XX e sua influência no desempenho mecânico de misturas asfálticas produzidas com esse ligante modificado nos teores de 1%, 2% e 3%. Realizou-se a caracterização mecânica por meio dos ensaios de resistência à tração, dano por umidade induzida, módulo de resiliência, módulo dinâmico, flow number e vida de fadiga. Dentre as principais conclusões, destaca-se uma diminuição máxima na temperatura de 5,2 °C para o teor de 3% de óleo de canola, mesmo que as misturas não pudessem ser classificadas como misturas asfálticas mornas. Entretanto, houve aumento da resistência à ação deletéria da água e economia de energia durante o aquecimento do ligante asfáltico e dos agregados no processo de produção.

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Section: Caracterização Física Reológica E Química Do Ligante Asfálticounclassified

Efeitos da adição do óleo de canola nas propriedades mecânicas de misturas asfálticas

Guerra,

Elísio de Figueirêdo Lopes Lucena,

Costa Beserra

et al. 2023

TRANSPORTES

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“…It has been reported in the literature that the regenerated asphalt-binder using residual soybean-oil can be as good as or even better than the traditional mineral oil rejuvenators. 12,13 Data from relevant research institutions show that China imported about 88.54 million tons of soybeans in 2019, and the consumption of soybean oil was estimated to be 15.5 million tons, which is 44% of the total edible vegetable oils. 14 Thus, if the soybean-oil wastes can be promoted for recycling applications, it can be a viable alternative and utilized to effectively reduce the cost of asphalt pavement regeneration technologies.…”

Section: Introductionmentioning

confidence: 99%

Study of the self‐healing properties of aged asphalt‐binder regenerated using residual soybean‐oil

Zhang

Zhou

Zhang

et al. 2021

J of Applied Polymer Sci

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To improve the self-healing properties and reduce the reaction energy barrier during the self-healing process of aged asphalt-binders, this study utilized residual oil extracted from soybean to regenerate the aged asphalt-binder and enhance its rheological properties including the self-recovery potential. The self-healing properties from the reaction energy barrier and chemical structure were characterized using molecular dynamic simulations. In addition, the rheological properties were measured and quantified using the dynamic shear rheometer test device. From the study results, the least reaction energy (30.16 kcalÁmol À1 ) barrier registered during the self-healing process of the regenerated asphalt-binder occurred at 5.8 wt% residual Soybean-oil, and was thus, deemed as the optimum oil content. The results further indicated that the residual soybean-oil had a significant influence on the spatial configuration of the molecules in the aged asphalt-binder, particularly on the saturates and aromatics components. Overall, the study findings indicated that residual Soybean-oil can potentially reduce the reaction energy barrier of aged asphaltbinders and enhance the self-healing properties including fatigue life.

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“…Rejuvenated asphalt binder using residual soybean oil can be as good as, or even better than, the traditional mineral oil rejuvenators [ 16 ]. Data from relevant research institutions show that 6030.8 million tons of soybeans were produced in 2020 around the world.…”

Section: Introductionmentioning

confidence: 99%

Characterizing the Diffusion and Rheological Properties of Aged Asphalt Binder Rejuvenated with Bio-Oil Based on Molecular Dynamic Simulations and Laboratory Experimentations

Zhang

Chao²,

Zhou

et al. 2021

Molecules

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Soybean-derived bio-oil is one of the vegetable-based oils that is gaining the most interest for potential use in the rejuvenation of aged asphalt binders. This laboratory study was conducted to characterize and quantify the diffusion and rheological properties of bio-oil-rejuvenated aged asphalt binder (BRAA) using soybean oil. In the study, the chemical structure of the soybean oil was comparatively characterized using an element analyzer (EA), gel permeation chromatography (GPC), and a Fourier infrared (FTIR) spectrometer, respectively. Based on the chemical structure of the bio-oil, BRAA molecular models were built for computing the diffusion parameters using molecular dynamic simulations. Likewise, a dynamic shear rheometer (DSR) test device was used for measuring and quantifying the rheological properties of the aged asphalt binder rejuvenated with 0%, 1%, 2%, 3%, 4%, and 5% soybean oil, respectively. The laboratory test results indicate that bio-oil could potentially improve the diffusion coefficients and phase angle of the aged asphalt binder. Similarly, the corresponding decrease in the complex shear modulus has a positive effect on the low-temperature properties of BRAA. For a bio-oil dosage 4.0%, the diffusion coefficients of the BRAA components are 1.52 × 10−8, 1.33 × 10−8, 3.47 × 10−8, 4.82 × 10−8 and 3.92 × 10−8, respectively. Similarly, the corresponding reduction in the complex shear modulus from 1.27 × 107 Pa to 4.0 × 105 Pa suggests an improvement in the low-temperature properties of BRAA. Overall, the study contributes to the literature on the potential use of soybean-derived bio-oil as a rejuvenator of aged asphalt binders.

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Evaluating the rheological effect of asphalt binder modification using soybean oil

Cited by 16 publications

References 7 publications

Efeitos da adição do óleo de canola nas propriedades mecânicas de misturas asfálticas

Efeitos da adição do óleo de canola nas propriedades mecânicas de misturas asfálticas

Study of the self‐healing properties of aged asphalt‐binder regenerated using residual soybean‐oil

Characterizing the Diffusion and Rheological Properties of Aged Asphalt Binder Rejuvenated with Bio-Oil Based on Molecular Dynamic Simulations and Laboratory Experimentations

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