Title
Preliminary study on using lignin as aging inhibitor in bitumen
Author
Zhang, Y. (TU Delft Pavement Engineering; Chang'an University)
Liu, X. (TU Delft Pavement Engineering)
Jing, R. (TU Delft Pavement Engineering) 
Apostolidis, P. (TU Delft Pavement Engineering)
Erkens, S. (TU Delft Pavement Engineering)
Scarpas, Athanasios (TU Delft Pavement Engineering; Khalifa University of Science and Technology)
Contributor
Kumar, A. (editor)
Papagiannakis, A.T. (editor)
Bhasin, A. (editor)
Little, D. (editor)
Date
2020
Abstract
During oxidative aging, oxygen reacts with active molecules present in bitumen producing polar compounds, principally ketones and sulfoxides, and increasing in the portion of asphaltenes. In general, oxidation reactions in bitumen yields to change its generic chemical composition and finally its colloidal structure deteriorating the physico-mechanical properties. Lignin is a natural polymer, which has been used in this study as an aging inhibitor to bitumen. Particularly, the effect of aging on the microstructure morphology, surface properties, chemical composition and rheological changes of lignin and the impact of latter as anti-oxidant in bitumen were evaluated. For the purposes of this study, Environmental Scanning Electron Microscope, Helium Pycnometer, Dynamic Vapor Sorption devices and were used to analyze the microstructure, density and specific surface area, respectively. Moreover, Fourier Transform Infrared spectroscopy was used to track the compositional changes in lignin-modified bitumen after PAV aging. Dynamic Shear Rheometer was used to analyze the rheological properties. Overall, decreasing in the carbonyl and sulfoxide compounds were tracked in lignin-modified binders confirm that lignin act as an aging inhibitor in bitumen.
To reference this document use:
http://resolver.tudelft.nl/uuid:a6006b83-0cb6-440b-8a38-6c6ff8920ea9
DOI
https://doi.org/10.1201/9781003027362-112
Publisher
Taylor and Francis, London
Embargo date
2021-08-07
ISBN
9781003027362
Source
Advances in Materials and Pavement Performance Prediction II: Contributions to the 2nd International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2020), 27-29 May, 2020, San Antonio, Tx, USA) (1)
Event
2nd International Conference on Advances in Materials and Pavement Performance Prediction, 2020-08-03 → 2020-08-07, Online due to COVID19, San Antonio, United States
Bibliographical note
Accepted Author Manuscript
Part of collection
Institutional Repository
Document type
conference paper
Rights
© 2020 Y. Zhang, X. Liu, R. Jing, P. Apostolidis, S. Erkens, Athanasios Scarpas