Effect of Short-Term and UV Irradiation Aging on the Behaviour of SBS-Modified Bitumen
| Autor: | Clara Celauro, Rosalia Teresi, Nadka Tz. Dintcheva |
|---|---|
| Přispěvatelé: | Celauro, C., Teresi, R., Dintcheva, Nadka |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
FTIR analysis
SBS-modified bitumen short-term ageing UV irradiation Settore ING-IND/22 - Scienza E Tecnologia Dei Materiali Renewable Energy Sustainability and the Environment Geography Planning and Development Settore ICAR/04 - Strade Ferrovie Ed Aeroporti Building and Construction Management Monitoring Policy and Law SBS-modified bitumen short-term ageing UV irradiation FTIR analysis |
| Zdroj: | Sustainability; Volume 14; Issue 11; Pages: 6915 |
| Popis: | To obtain road bitumen with improved temperature and fatigue resistance, polymers and/or rubbers could be added to it. A particularly suitable polymer for bitumen modification is styrene-butadiene-styrene (SBS) copolymer but limited information is available about the ageing behaviour of modified binders. In this work, two neat bitumens, with different penetration grades, and two SBS-modified bitumens, containing different SBS amounts, were selected, and their short-term and UVB ageing behaviour were investigated considering dynamic shear rheometry and Attenuated Total Reflectance-Fourier Transformation InfraRed spectroscopy (ATR-FTIR). Short-time ageing behaviour was investigated performing the rolling thin film oven test (RTFOT), while artificial UV ageing was examined/investigated using UVB lamps. The structural changes in bitumen were monitored at different UV exposure times. All the results suggest that the bitumen having higher penetration grade is more stable than the one with a lower penetration grade in the RTFOT ageing condition, and SBS addition exerts a beneficial effect on thermal stability during processing. Further, SBS addition also has a beneficial effect on the UV ageing resistance of bitumen, reducing its oxidation tendency. |
| Databáze: | OpenAIRE |
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