Micro-characterization of bitumens under the coupling action of moisture and oxygen. Chen, M., Geng, J., Chen, H., Niu, Y., & He, L. Journal of Building Engineering, 53:104589, 2022.
Micro-characterization of bitumens under the coupling action of moisture and oxygen [link]Paper  doi  abstract   bibtex   
The waterproofing membrane would be subject to the intrusion of oxygen and moisture for a long time, resulting in a complex aging reaction. In this paper, FTIR, TG-DSC, 1H NMR and GC-MS investigated the water aging mechanism of bitumen. The results show that the carbonyl and sulfoxide groups of bitumens increased after water aging, and the peak temperature of thermal cracking rose. At the same time, the increase of hydrogen nucleus (Hsat) on the aliphatic group revealed that hydrogen substitution and structural dissimilation in the bitumen occurred during the water aging process. Also, there was an oxidation reaction of compounds containing active functional groups and a polymerization reaction of aromatic compounds, and the properties of the products shifted to asphaltenes. In short, high temperature and oxygen were the main factors causing the volatilization of light components and the aromatization reaction in the bitumens, and the moisture environment would aggravate the vicious cycle of water aging.
@article{pub.1147559932,
 abstract = {The waterproofing membrane would be subject to the intrusion of oxygen and moisture for a long time, resulting in a complex aging reaction. In this paper, FTIR, TG-DSC, 1H NMR and GC-MS investigated the water aging mechanism of bitumen. The results show that the carbonyl and sulfoxide groups of bitumens increased after water aging, and the peak temperature of thermal cracking rose. At the same time, the increase of hydrogen nucleus (Hsat) on the aliphatic group revealed that hydrogen substitution and structural dissimilation in the bitumen occurred during the water aging process. Also, there was an oxidation reaction of compounds containing active functional groups and a polymerization reaction of aromatic compounds, and the properties of the products shifted to asphaltenes. In short, high temperature and oxygen were the main factors causing the volatilization of light components and the aromatization reaction in the bitumens, and the moisture environment would aggravate the vicious cycle of water aging.},
 author = {Chen, Mingyuan and Geng, Jiuguang and Chen, Huaxin and Niu, Yanhui and He, Leilei},
 date = {2022-08},
 doi = {10.1016/j.jobe.2022.104589},
 journal = {Journal of Building Engineering},
 keywords = {},
 number = {},
 pages = {104589},
 title = {Micro-characterization of bitumens under the coupling action of moisture and oxygen},
 url = {https://app.dimensions.ai/details/publication/pub.1147559932},
 volume = {53},
 year = {2022}
}

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