Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preliminary Investigation of Using Nanocellulose in Bituminous Materials
In Canada, the three most costly modes of pavement distresses are thermal cracking, fatigue cracking, and permanent deformation. The unpredictable increase in heavy-vehicle traffic and extreme fluctuations in temperature play a major role in the acceleration of pavement deterioration. Numerous studies on innovative bitumen modification have been carried out in order to improve pavement performance. Some of these studies have focused on using nanomaterials to modify bitumen to mitigate deterioration and to extend pavement service life. Cellulose is a green material that has been successfully used for concrete reinforcement due to its excellent mechanical properties and biocompatibility. Therefore, Nano-crystalline cellulose (CNC) is being evaluated as a bitumen modifier in the present study. The Dynamic Shear Rheometer test (DSR) is used to determine the rheological properties of the bitumen based on the Superpave system. The preliminary results of the investigation into using nanocellulose as a bitumen modifier, demonstrate that nanocellulose has a moderate impact on the rheological properties of bitumen, especially at high temperatures. Moreover, the nanocellulose concentration increases the complex modulus which can help with permanent deformation resistance. Nevertheless, the results support the need for further testing of the modified mixtures in order to have a better understanding of the impact of nanocellulose on the performance of bituminous mixes.
Preliminary Investigation of Using Nanocellulose in Bituminous Materials
In Canada, the three most costly modes of pavement distresses are thermal cracking, fatigue cracking, and permanent deformation. The unpredictable increase in heavy-vehicle traffic and extreme fluctuations in temperature play a major role in the acceleration of pavement deterioration. Numerous studies on innovative bitumen modification have been carried out in order to improve pavement performance. Some of these studies have focused on using nanomaterials to modify bitumen to mitigate deterioration and to extend pavement service life. Cellulose is a green material that has been successfully used for concrete reinforcement due to its excellent mechanical properties and biocompatibility. Therefore, Nano-crystalline cellulose (CNC) is being evaluated as a bitumen modifier in the present study. The Dynamic Shear Rheometer test (DSR) is used to determine the rheological properties of the bitumen based on the Superpave system. The preliminary results of the investigation into using nanocellulose as a bitumen modifier, demonstrate that nanocellulose has a moderate impact on the rheological properties of bitumen, especially at high temperatures. Moreover, the nanocellulose concentration increases the complex modulus which can help with permanent deformation resistance. Nevertheless, the results support the need for further testing of the modified mixtures in order to have a better understanding of the impact of nanocellulose on the performance of bituminous mixes.
Preliminary Investigation of Using Nanocellulose in Bituminous Materials
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) / Qabur, Ali (Autor:in) / Liao, Hui (Autor:in) / Zhao, Dandi (Autor:in) / Baaj, Hassan (Autor:in)
RILEM International Symposium on Bituminous Materials ; 2020 ; Lyon, France
Proceedings of the RILEM International Symposium on Bituminous Materials ; Kapitel: 190 ; 1495-1501
RILEM Bookseries ; 27
26.09.2021
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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Crack-Healing Investigation in Bituminous Materials
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Crack-Healing Investigation in Bituminous Materials
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