Chemical, surface and nanomechanical analyses in the assessment of the ageing process of polythiophene nanofiber-modified road bitumen
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Malinowski Szymon, Woszuk Agnieszka, Kwaśniewska Anita, Gładyszewski Grzegorz, Zofka Adam |
| Dyscypliny: | |
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| Rok wydania: | 2026 |
| Wersja dokumentu: | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 421 |
| Numer artykułu: | 138931 |
| Impact Factor: | 7,5 |
| Scopus® Cytowania: | 0 |
| Bazy: | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Recently, technological innovations in road pavement production have been focused on extending the service life of road pavements by enhancing the anti-ageing resistance of the road bitumen in the asphalt mixture. In this area, high-cost polymer nanofibres with difficult compatibility to road bitumen are also used. Therefore, this study examined the possibility of using a new, cost-effective and environmentally friendly polymer modifier in the form of polythiophene nanofibres (PT_NFs) in the design of road pavements with increased service life. The research included an analysis of both modification as well as short-(TFOT) and long-term(PAV) ageing processes in terms of changes in the physico-chemical, structural and surface properties of road bitumen. The research showed that, relative to unmodified road bitumen, 1% w/w addition of PT_NFs caused an increase in penetration of ∼ 13%, a decrease in softening point of 0.5°C and an increase in dynamic viscosity of ∼ 6%. However, a 5-fold increase in the amount of nanofibres to 5% by weight resulted in a decrease in penetration of ∼ 0.5%, an increase in softening point of 1.4°C and an increase in dynamic viscosity of 24%. The obtained results indicate that use of PT_NFs modified road bitumen in the production of asphalt mixtures can effectively extend the service life of road surfaces. Their use reduces the VAI and SPI values by ∼ 13% and ∼ 12%, respectively. Furthermore, the use of PT_NFs also inhibits the oxidation of C and S atoms during road surface use by ∼ 25% and ∼ 90%, respectively. |
