Influence of thermal aging and long term-aging on Ni and V content in asphalt fractions and their determination in air particulate matter from asphalt mixing plants

Adolfo, Franciéle Rovasi; Claussen, Luís E.; Cargnin, Rejane Secretti; Brudi, Letícia C.; Grasmann, Carla S.; Nascimento, Paulo Cı́cero do; Cravo, Margareth Coutinho; Nascimento, Luís Alberto Herrmann do; Alcantara, Amanda; Branco, Verônica Teixeira Franco Castelo; Carvalho, Leandro Machado de

doi:10.1016/j.fuel.2022.124289

Cited by 7 publications

(1 citation statement)

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“…In the mixing and paving stage of asphalt mixture, the oxidation reaction of asphalt with oxygen occurs at high temperature, which leads to the rapid aging of asphalt. In the service stage, a slow oxidation reaction gradually occurs between asphalt and oxygen in the air [7][8][9]. Asphalt aging causes the binder to become hard and brittle, with a severe decline in relaxation properties, eventually leads to pavement cracking and other diseases.…”

Section: Introductionmentioning

confidence: 99%

Effects of Commercial Antioxidants on Aging Resistances of Asphalt Binders

An¹,

Gao

Dong

et al. 2022

Advances in Materials Science and Engineering

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Asphalt aging has a direct influence on the durability of asphalt mixture. In order to improve thermal oxidizing aging resistance of asphalt, the commercial antioxidants including Irganox 1010 and Irgafos 168 were selected to modify base asphalt and SBR asphalt. The basic properties of modified asphalt before and after the rolling thin film oven test (RTFOT) are evaluated by penetration, softening point, ductility, and viscosity. The Fourier transform infrared spectroscopy (FTIR) test was applied to determine the antiaging mechanism of modified and unmodified asphalt. According to the test result, Irganox 1010 not only reduces the aging degree of asphalt but also has little adverse effect on other properties. Irgafos 168 with a content of 1% improves the low temperature ductility of asphalt and improves the antiaging performance of asphalt significantly. After RTFOT, the content of oxygen-containing functional groups (carbonyl group and sulfoxide group) declines significantly in antioxidation modified asphalt, and Irganox 1010 and Irgafos 168 inhibit oxidizing reaction in the aging procedure. This study can provide a useful reference for improving the aging property of asphalt in highway construction.

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Section: Introductionmentioning

confidence: 99%