Investigation of Oxidation Homogeneity in Asphalt Puck after Simulation of Long-Term Aging (Pressure Aging Vessel)
For decades, it has been known that the creation of oxygenated functional groups, especially carbonyl and sulfoxide, is among the main causes of chemical aging and degradation of asphalt. However, is the oxidation of a bitumen homogeneous? The focus of this paper was to follow the oxidation phenomen...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/11/3916 |
| _version_ | 1797597257249325056 |
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| author | Lorris Bruneau Séverine Tisse Laurent Michon Pascal Cardinael |
| author_facet | Lorris Bruneau Séverine Tisse Laurent Michon Pascal Cardinael |
| author_sort | Lorris Bruneau |
| collection | DOAJ |
| description | For decades, it has been known that the creation of oxygenated functional groups, especially carbonyl and sulfoxide, is among the main causes of chemical aging and degradation of asphalt. However, is the oxidation of a bitumen homogeneous? The focus of this paper was to follow the oxidation phenomena through an asphalt puck during a pressure aging vessel (PAV) test. According to the literature, the asphalt oxidation process that leads to the creation of oxygenated functions can be divided into the following successive main steps: the absorption of oxygen in asphalt at the air/asphalt interface, diffusion into the matrix, and reaction with asphalt molecules. To study the PAV oxidation process, the creation of carbonyl and sulfoxide functional groups in three asphalts were investigated after various aging protocols by Fourier transform infrared spectroscopy (FTIR). From these experiments performed on different layers of asphalt puck, it was observed that PAV aging resulted in a nonhomogeneous oxidation level inside the entire matrix. Compared to the upper surface, the lower section exhibited carbonyl and sulfoxide indices 70% and 33% lower, respectively. Moreover, the difference in the oxidation level between the top and bottom surfaces increased when the thickness and viscosity of the asphalt sample increased. |
| first_indexed | 2024-03-11T03:04:02Z |
| format | Article |
| id | doaj.art-c82e70d2317745bba81084ccf85720ae |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T03:04:02Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c82e70d2317745bba81084ccf85720ae2023-11-18T08:07:47ZengMDPI AGMaterials1996-19442023-05-011611391610.3390/ma16113916Investigation of Oxidation Homogeneity in Asphalt Puck after Simulation of Long-Term Aging (Pressure Aging Vessel)Lorris Bruneau0Séverine Tisse1Laurent Michon2Pascal Cardinael3Esso SAF, Avenue Kennedy, 76330 Port-Jérôme-sur-Seine, FranceUniv Rouen Normandie, FR3038, SMS, UR 3233, 76000 Rouen, FranceEsso SAF, Avenue Kennedy, 76330 Port-Jérôme-sur-Seine, FranceUniv Rouen Normandie, FR3038, SMS, UR 3233, 76000 Rouen, FranceFor decades, it has been known that the creation of oxygenated functional groups, especially carbonyl and sulfoxide, is among the main causes of chemical aging and degradation of asphalt. However, is the oxidation of a bitumen homogeneous? The focus of this paper was to follow the oxidation phenomena through an asphalt puck during a pressure aging vessel (PAV) test. According to the literature, the asphalt oxidation process that leads to the creation of oxygenated functions can be divided into the following successive main steps: the absorption of oxygen in asphalt at the air/asphalt interface, diffusion into the matrix, and reaction with asphalt molecules. To study the PAV oxidation process, the creation of carbonyl and sulfoxide functional groups in three asphalts were investigated after various aging protocols by Fourier transform infrared spectroscopy (FTIR). From these experiments performed on different layers of asphalt puck, it was observed that PAV aging resulted in a nonhomogeneous oxidation level inside the entire matrix. Compared to the upper surface, the lower section exhibited carbonyl and sulfoxide indices 70% and 33% lower, respectively. Moreover, the difference in the oxidation level between the top and bottom surfaces increased when the thickness and viscosity of the asphalt sample increased.https://www.mdpi.com/1996-1944/16/11/3916asphaltoxidationpressure aging vesselFourier transform infrared spectroscopy |
| spellingShingle | Lorris Bruneau Séverine Tisse Laurent Michon Pascal Cardinael Investigation of Oxidation Homogeneity in Asphalt Puck after Simulation of Long-Term Aging (Pressure Aging Vessel) Materials asphalt oxidation pressure aging vessel Fourier transform infrared spectroscopy |
| title | Investigation of Oxidation Homogeneity in Asphalt Puck after Simulation of Long-Term Aging (Pressure Aging Vessel) |
| title_full | Investigation of Oxidation Homogeneity in Asphalt Puck after Simulation of Long-Term Aging (Pressure Aging Vessel) |
| title_fullStr | Investigation of Oxidation Homogeneity in Asphalt Puck after Simulation of Long-Term Aging (Pressure Aging Vessel) |
| title_full_unstemmed | Investigation of Oxidation Homogeneity in Asphalt Puck after Simulation of Long-Term Aging (Pressure Aging Vessel) |
| title_short | Investigation of Oxidation Homogeneity in Asphalt Puck after Simulation of Long-Term Aging (Pressure Aging Vessel) |
| title_sort | investigation of oxidation homogeneity in asphalt puck after simulation of long term aging pressure aging vessel |
| topic | asphalt oxidation pressure aging vessel Fourier transform infrared spectroscopy |
| url | https://www.mdpi.com/1996-1944/16/11/3916 |
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