NMR on the Road: Non-destructive Characterization of the Crumb-Rubber Fraction in Asphalt

Blümich, Bernhard; Teymouri, Yadollah; Clark, Redmond

doi:10.1007/s00723-018-1097-8

Cited by 17 publications

(2 citation statements)

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“…For the study of oil, several fractionation methods were developed for different groups of compounds to understand chemically phenomena, such as precipitation of asphaltenes, stability of water/oil emulsions, weathering, and corrosion. − These methods adapted for the study of asphalt can be a tool for determining the quality of asphalt and how it is affected by aging processes.…”

Section: Methods Of Fractionation Of Asphalt Samplesmentioning

confidence: 99%

“…In this context, Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) is widely applied to petroleum study; , however, there are few works on the theme of asphalt aging. Bringing information that can complement the study at the molecular level of asphalt aging can bring more specific information about the chemical composition (C c H h N n O o ) and aromaticity of asphalt and to answer the why or how chemical reactions occur in the aging process.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Asphalt Aging by Analytical Techniques: A Review on Progress and Perspectives

2022

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This review describes the chemical composition of asphalt, which is relevant for the development of materials with higher quality and durability. Asphalt aging can occur in the short term (during machining and storage periods) and the long-term (during the time the pavement is exposed to the environment). To understand the effect of aging on the chemical and physical properties of asphalt, we reviewed the short-term (rolling-thin film oven test (RTFOT) and its variations) and long-term (pressure aging vessel (PAV) and its variations) aging methods and the effects of the sun’s ultraviolet radiation (Suntest and its variations). We also explored the main chemical reactions that occur in the aging processes, such as oxidation, polymerization, and aromatization. For a more accurate assessment of the classes of compounds that undergo aging reactions, fractionation techniques have been developed over the years, such as separation of asphalt into saturates, naphthenic-aromatics, resins, asphaltenes, organic sulfides, nitrogenates, and oxygenates, among others. Despite several studies on the theme of asphalt aging, it is still necessary to understand the phenomena that occur in those processes.

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Section: Methods Of Fractionation Of Asphalt Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%