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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rheological Properties of Asphalt Binder Compound Modified by Bio-oil and Organic Montmorillonite
In recent years, the waste cooking oil (WCO) based bio-asphalt is developed as a potential alternative binder for the traditional petroleum asphalt. Several previous studies demonstrate that the WCO based bio-oil modification generally enhance the binder cracking resistance but has an adverse effect on high temperature performance. This paper aims to improve the rutting resistance of WCO based bio-asphalt by a further compound modification of Organized Montmorillonite (OMMT). Two neat asphalt binders with penetration grades of 70 and 90 are selected in this study. The WCO based bio-oil is firstly added into the neat binders followed by further modified with the OMMT additive. The neat binders, bio-binders and Bio/OMMT binders are then characterized by rheological performance tests in this study. The frequency sweep, multiple stress creep recovery (MSCR) and linear amplitude sweep (LAS) tests are respectively conducted for linear viscoelastic properties, rutting resistance and fatigue performance evaluations. Experimental results indicate that the fatigue resistance of bio-binders at intermediate temperature are improved compared to the neat binders whereas the addition of bio-oil obviously reduces the binder rutting resistance at high temperature. Furthermore, adding the OMMT into the bio-binders is found to effectively enhance the rutting resistance when increasing the OMMT content without compromising the fatigue performance. Therefore, it can be preliminary concluded in this study that the Bio/OMMT compound modification approach can be utilized to address the rutting potential concern of WCO based bio-binders at the high temperature condition.
Rheological Properties of Asphalt Binder Compound Modified by Bio-oil and Organic Montmorillonite
In recent years, the waste cooking oil (WCO) based bio-asphalt is developed as a potential alternative binder for the traditional petroleum asphalt. Several previous studies demonstrate that the WCO based bio-oil modification generally enhance the binder cracking resistance but has an adverse effect on high temperature performance. This paper aims to improve the rutting resistance of WCO based bio-asphalt by a further compound modification of Organized Montmorillonite (OMMT). Two neat asphalt binders with penetration grades of 70 and 90 are selected in this study. The WCO based bio-oil is firstly added into the neat binders followed by further modified with the OMMT additive. The neat binders, bio-binders and Bio/OMMT binders are then characterized by rheological performance tests in this study. The frequency sweep, multiple stress creep recovery (MSCR) and linear amplitude sweep (LAS) tests are respectively conducted for linear viscoelastic properties, rutting resistance and fatigue performance evaluations. Experimental results indicate that the fatigue resistance of bio-binders at intermediate temperature are improved compared to the neat binders whereas the addition of bio-oil obviously reduces the binder rutting resistance at high temperature. Furthermore, adding the OMMT into the bio-binders is found to effectively enhance the rutting resistance when increasing the OMMT content without compromising the fatigue performance. Therefore, it can be preliminary concluded in this study that the Bio/OMMT compound modification approach can be utilized to address the rutting potential concern of WCO based bio-binders at the high temperature condition.
Rheological Properties of Asphalt Binder Compound Modified by Bio-oil and Organic Montmorillonite
RILEM Bookseries
Di Benedetto, Hervé (Herausgeber:in) / Baaj, Hassan (Herausgeber:in) / Chailleux, Emmanuel (Herausgeber:in) / Tebaldi, Gabriele (Herausgeber:in) / Sauzéat, Cédric (Herausgeber:in) / Mangiafico, Salvatore (Herausgeber:in) / Xie, Tingting (Autor:in) / Chen, Yifang (Autor:in) / Wang, Chao (Autor:in)
RILEM International Symposium on Bituminous Materials ; 2020 ; Lyon, France
Proceedings of the RILEM International Symposium on Bituminous Materials ; Kapitel: 203 ; 1603-1609
RILEM Bookseries ; 27
26.09.2021
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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