GRAPHENE EMBEDDED BITUMINOUS ROADS: A NEW LOOK INTO THE DESIGN OF COMPLEX NANOCOMPOSITES

1 INDUCHOODAN Govindan
Co-authors:
1 ADL-ZARRABI Bijan 2 SWENSON Jan 1 TANG Luping
Institutions:
1 Chalmers University of Technology, Dept. of Architecture and Civil Engineering, Göteborg, Sweden, govindan@chalmers.se, bijan.adl-zarrabi@chalmers.se, tang.luping@chalmers.se
2 Chalmers University of Technology, Department of Physics, Göteborg, Sweden, jan.swenson@chalmers.se
Conference:
10th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 17th - 19th 2018
Proceedings:
Proceedings 10th International Conference on Nanomaterials - Research & Application
Pages:
107-112
ISBN:
978-80-87294-89-5
ISSN:
2694-930X
Published:
28th February 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
53 views / 18 downloads
Abstract

The chemistry of bitumen and the percentage of asphaltene can vary significantly depending on external and internal factors such as the source and method of bitumen extraction. This makes graphene embedded bitumen a complex ternary phase system. Within the framework of this paper, we focus on the phase stability and particle interaction between graphene and asphaltene in order to optimize the process of tailoring the microstructure of graphene embedded bitumen to improve the gas barrier and mechanical properties. We use characterization techniques such as rotational-rheometer, DSC, chemical titration and road engineering standards such as RTFOT and penetration-grade to study the critical-clustering-concentration, phase behavior and the impact of embedding graphene to manufacturing process of asphalt. Phase separation and agglomeration of dissimilar nanoparticles was observed when graphene embedded bitumen (1% vol) was subjected to RTFOT, increasing the change in viscosity by around 13% when compared to 10% in std. bitumen. Hence this paper aspires to provide a brief look into tailoring of nanocomposites with dissimilar nanoparticles and embedding nanoparticles such as graphene into complex matrices.

Keywords: Graphene, material design, bitumen, material characterization, dissimilar nanoparticles
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