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Experimental Validation of the Dual-Oxidation Routes in Bituminous Binders
University of Antwerp, Belgium.
University of Antwerp, Belgium.
University of Antwerp, Belgium.
Nynäs NV, Belgium.
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2022 (English)In: RILEM Bookseries, Springer Science and Business Media B.V. , 2022, Vol. 27, p. 903-909Chapter in book (Refereed)
Abstract [en]

Oxidative ageing in bituminous materials is considered to be one of the most important factors for distress types in road applications. The increasing interest in oxidative ageing has highlighted the need for a thorough understanding of the oxidation mechanisms at molecular level. This paper offers some insight in the validity of the proposed hypotheses about the oxidation routes of bitumen, the fast- and the slow-rate route, reflecting on previous studies. Fourier-Transform Infrared (FTIR) and Electron Paramagnetic Resonance (EPR) spectroscopy were utilised for this verification. To elucidate the uncertain formation of sulfoxides, an additional surface investigation with Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS) was performed. The findings of the aforementioned techniques reveal the existence of the oxidation products reported previously and contribute to the understanding of the oxidation mechanisms. Overall, this research strengthens experimentally the hypotheses of the dual-oxidation routes of bitumen. © 2022, The Author(s)

Place, publisher, year, edition, pages
Springer Science and Business Media B.V. , 2022. Vol. 27, p. 903-909
Series
RILEM Bookseries, ISSN 2211-0844 ; 27
Keywords [en]
Bitumen, EPR, FTIR, Oxidative ageing, TOF-SIMS
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-59776DOI: 10.1007/978-3-030-46455-4_115Scopus ID: 2-s2.0-85116492017OAI: oai:DiVA.org:ri-59776DiVA, id: diva2:1680524
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Available from: 2022-07-04 Created: 2022-07-04 Last updated: 2023-06-05Bibliographically approved

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Sjövall, Peter

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