| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Soenen, Hilde
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2021Determination of bitumen coverage, after the rolling bottle test, by a digital image processing method
- 2021Exploring the oxidative mechanisms of bitumen after laboratory short- and long-term ageingcitations
- 2021Experimental Validation of the Dual-Oxidation Routes in Bituminous Binderscitations
- 2020Outcomes from RILEM TC 237-SIB TG1 on the affinity between aggregates and bituminous binders
- 2020Experimental investigation of the oxidative ageing mechanisms in bitumencitations
- 2019Visualization and chemical analysis of bitumen microstructurescitations
- 2018Bituminous Bindercitations
- 2018Low-temperature rheological and morphological characterization of SBS modified bitumencitations
- 2018An empirical constitutive model for complex glass-forming liquids using bitumen as a model materialcitations
- 2018Bituminous bindercitations
- 2016Oxidation of bitumencitations
- 2016Oxidation of bitumen:molecular characterization and influence on rheological propertiescitations
- 2013Differential scanning calorimetry applied to Bitumen: results of the RILEM NBM TG1 round robin testcitations
- 2006Influence of thermal history on rheological properties of various bitumencitations
Places of action
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article
Experimental investigation of the oxidative ageing mechanisms in bitumen
Abstract
<p>Oxidative ageing in bituminous materials is considered one of the most important factors for distress types in road applications. This paper aims to offer insights into the validity of commonly held beliefs regarding the oxidation phases of ageing in bitumen, the fast- and the slow-rate phase, and explore the main oxidation products formed upon ageing. In order to evaluate possible differences between bitumen types, the penetration grade as well as the bitumen production process was varied. Thus, the ageing of three different binders was first studied by Fourier-Transform Infrared (FTIR) and Electron Paramagnetic Resonance (EPR) spectroscopy. The formation of oxygen-containing molecular structures on the bitumen surface during ageing was studied with Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS). The results of FTIR reveal a gradual increase of sulfoxides upon ageing, while the EPR results show an increase of organic carbon-centred radicals. In parallel, TOF-SIMS results provide evidence for an increase of oxygenated compounds, such as SO<sub>x</sub><sup>-</sup>-, HO<sub>x</sub><sup>-</sup>- and NO<sub>x</sub><sup>-</sup>-containing compounds. It appears also that paramagnetic metal species, such as vanadyl-porphyrins, are insusceptible during ageing. Overall, the findings of this study are in agreement with a mechanism comprising two rate-determining phases and support the formation of different oxygenated products. It is believed that the experimental approach used in this work may contribute further to an improved understanding of the ageing mechanisms in bitumen.</p>