Characterisation of modified asphalt mixtures with lignin of
            <i>pinus</i>
            and
            <i>eucalyptus</i>
            woods

Mendonça, Ana Maria Gonçalves Duarte; Neto, Osires de Medeiros Melo; Rodrigues, John Kennedy Guedes; Lima, Robson Kel Batista de; Silva, Ingridy Minervina; Marques, Agílio Tomaz

doi:10.1080/14488353.2022.2089376

Cited by 11 publications

(2 citation statements)

References 30 publications

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“…The data obtained in the characterization tests are within limits presented in the limits column of Table 1. The real and apparent specific mass values of the natural aggregates were close to those obtained in the literature ( 35 – 37 ). In contrast, the values observed for ore tailing differed from those reported by de Souza et al ( 23 ), ranging from 2,806 g/cm 3 to 4,084 g/cm 3 .…”

Section: Methodssupporting

confidence: 86%

“…This research found a value of 64°C before and after performing the RTFO (Rolling Thin Film Oven). Research (35,36,(39)(40)(41)(42)(43) obtained values similar to the results observed in Table 2, both for physical and rheological characterization data. The multiple stress creep and recovery (MSCR) assay was performed at the maximum temperature of the PG (64°C).…”

Section: Methodssupporting

confidence: 83%

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Viability of Asphalt Mixtures with Iron Ore Tailings as a Partial Substitute for Fine Aggregate

de Moraes,

Neto,

Lucena

et al. 2023

Transportation Research Record: Journal of the Transportation R

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Dark colors aggravate the absorption and accumulation of heat in urban centers in the layers of asphalt coating. These problems can be minimized by incorporating materials that increase the albedo on these pavements. The use of waste in the industry has been encouraged, and an alternative is iron ore tailing (IoT), whose material comes from processing iron ore. The circular economy encourages a change in waste disposal after project decommissioning, encouraging the transformation, reuse, and recycling of waste. Therefore, this research investigated the influence of percentages of IoT in the contents (7.5%, 10.0%, and 12.5%) as a substitute for fine natural aggregate on hot asphalt mixtures’ mechanical and thermal performance. The statistical variance test (ANOVA) was used to validate the obtained data. An economic analysis concerning the costs of production and recovery of asphalt mixtures was carried out using the Present Net Value. Asphalt mixtures with IoT were evaluated with regard to the environmental aspect using the circularity index. Among the asphalt mixtures analyzed, the one produced with 12.5% was the most viable. The results showed a gain in mechanical performance concerning tensile strength, resilient modulus, fatigue, and permanent deformation of this mixture, as well as a reduction in production costs per kilometer of highway. The use of 12.5% provided a greater circularity and a reduction of the surface temperature of the pavement by 2.9°C. IoT is viable in constructing highways close to places that produce iron ore.

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