Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Chemo-mechanical Investigation of Extended Long-Term Aging on Styrene–Butadiene–Styrene (SBS)-Modified Bitumen
https://orcid.org/https://orcid.org/0000-0003-2743-1348
https://orcid.org/https://orcid.org/0000-0003-4992-8777
https://orcid.org/https://orcid.org/0000-0002-5118-4255
https://orcid.org/https://orcid.org/0000-0003-4787-7478
Styrene–butadiene–styrene (SBS)-modified bitumen is widely used to enhance pavement long-term performance. Much of this improvement can be attributed to elastomeric nature of this polymer and the resultant change in viscoelastic properties over a wide range of temperatures. In the blend, SBS absorbs the aromatic fraction of the bitumen resulting in asphaltene-rich phases; this alteration of the microstructure may improve resistance to oxidative aging thus providing a secondary mechanism for asphalt durability over the service life of the pavement. The ability of SBS to reduce the oxidative aging potential of polymer-modified bitumen (PMB) has been documented in several studies. To better understand the role of SBS in the aging process, this study chapter will evaluate the evolution of PMB chemistry experiencing long-term laboratory aging. SBS-modified binders with increasing concentrations were aged for 20, 40, and 60 hours using Pressure Aging Vessel (PAV) aging and then analyzed using Fourier Transform Infrared (FTIR) spectroscopy. The results are compared with advanced characterization techniques including Saturates, Aromatics, Resins, and Asphaltene-Determinator (SAR-AD) of the neat bitumen, and temperature–frequency sweeps to evaluate how the thermo-rheological properties evolve with increased oxidative aging.
Chemo-mechanical Investigation of Extended Long-Term Aging on Styrene–Butadiene–Styrene (SBS)-Modified Bitumen
https://orcid.org/https://orcid.org/0000-0003-2743-1348
https://orcid.org/https://orcid.org/0000-0003-4992-8777
https://orcid.org/https://orcid.org/0000-0002-5118-4255
https://orcid.org/https://orcid.org/0000-0003-4787-7478
Styrene–butadiene–styrene (SBS)-modified bitumen is widely used to enhance pavement long-term performance. Much of this improvement can be attributed to elastomeric nature of this polymer and the resultant change in viscoelastic properties over a wide range of temperatures. In the blend, SBS absorbs the aromatic fraction of the bitumen resulting in asphaltene-rich phases; this alteration of the microstructure may improve resistance to oxidative aging thus providing a secondary mechanism for asphalt durability over the service life of the pavement. The ability of SBS to reduce the oxidative aging potential of polymer-modified bitumen (PMB) has been documented in several studies. To better understand the role of SBS in the aging process, this study chapter will evaluate the evolution of PMB chemistry experiencing long-term laboratory aging. SBS-modified binders with increasing concentrations were aged for 20, 40, and 60 hours using Pressure Aging Vessel (PAV) aging and then analyzed using Fourier Transform Infrared (FTIR) spectroscopy. The results are compared with advanced characterization techniques including Saturates, Aromatics, Resins, and Asphaltene-Determinator (SAR-AD) of the neat bitumen, and temperature–frequency sweeps to evaluate how the thermo-rheological properties evolve with increased oxidative aging.
Chemo-mechanical Investigation of Extended Long-Term Aging on Styrene–Butadiene–Styrene (SBS)-Modified Bitumen
https://orcid.org/https://orcid.org/0000-0003-2743-1348
https://orcid.org/https://orcid.org/0000-0003-4992-8777
https://orcid.org/https://orcid.org/0000-0002-5118-4255
https://orcid.org/https://orcid.org/0000-0003-4787-7478
Styrene–butadiene–styrene (SBS)-modified bitumen is widely used to enhance pavement long-term performance. Much of this improvement can be attributed to elastomeric nature of this polymer and the resultant change in viscoelastic properties over a wide range of temperatures. In the blend, SBS absorbs the aromatic fraction of the bitumen resulting in asphaltene-rich phases; this alteration of the microstructure may improve resistance to oxidative aging thus providing a secondary mechanism for asphalt durability over the service life of the pavement. The ability of SBS to reduce the oxidative aging potential of polymer-modified bitumen (PMB) has been documented in several studies. To better understand the role of SBS in the aging process, this study chapter will evaluate the evolution of PMB chemistry experiencing long-term laboratory aging. SBS-modified binders with increasing concentrations were aged for 20, 40, and 60 hours using Pressure Aging Vessel (PAV) aging and then analyzed using Fourier Transform Infrared (FTIR) spectroscopy. The results are compared with advanced characterization techniques including Saturates, Aromatics, Resins, and Asphaltene-Determinator (SAR-AD) of the neat bitumen, and temperature–frequency sweeps to evaluate how the thermo-rheological properties evolve with increased oxidative aging.
Chemo-mechanical Investigation of Extended Long-Term Aging on Styrene–Butadiene–Styrene (SBS)-Modified Bitumen
Carter, Alan (Herausgeber:in) / Vasconcelos, Kamilla (Herausgeber:in) / Dave, Eshan (Herausgeber:in) / Aurilio, Mike (Autor:in) / Sharma, Aditi (Autor:in) / Tavassoti, Pejoohan (Autor:in) / Elwardany, Michael (Autor:in)
International Symposium on Asphalt Pavement & Environment ; 2024 ; Montreal, QC, Canada
14th International Conference on Asphalt Pavements ISAP2024 Montreal ; Kapitel: 82 ; 491-495
24.12.2024
5 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
| British Library Online Contents | 2013