REOB/SBS Composite-Modified Bitumen Preparation and Modification Mechanism Analysis
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2023-07
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
Buildings, Volume 13, issue 7
Abstract
To investigate the effect of recycled engine oil bottoms (REOB) as a compatibilizer on the properties of styrene–butadiene–styrene-modified bitumen (SBS-PMB), this paper studied the preparation method, properties, and micro-mechanism of composite modification of matrix bitumen with SBS and REOB. Firstly, a multi-factor orthogonal experiment determined the optimal preparation scheme of REOB/SBS composite-modified bitumen (REOB/SBS-PMB). Then, the high-temperature stability rheological properties, and anti-aging performance of REOB-PMB were studied by testing Brookfield viscosity, elasticity recovery, and dynamic shear rheology (DSR) and by short-term aging simulation (TFOT). Finally, the microstructure, fraction content, and SBS particle dispersion of 70# matrix bitumen (70-MB), SBS-PMB, and REOB/SBS-PMB were compared and analyzed by tests of Fourier transform infrared spectroscopy (FTIR), rod-shaped thin-layer chromatography, and fluorescence microscopy to reveal the micro-mechanism of REOB improving SBS and bitumen compatibility. The research results showed that the mixing form of SBS and REOB in bitumen was mainly physical swelling and blending, with chemical changes also present that have a minor impact. The light fraction in REOB increased the flowability of bitumen, promoted the swelling of SBS, improved the compatibility between SBS and bitumen, and improved the high-temperature stability and rheological properties while reducing the impact of aging.Description
Funding Information: This research was funded by Science and Technology Innovation Project for Postgraduates of Shandong Jiaotong University (Funding Number: 2023YK035). Publisher Copyright: © 2023 by the authors.
Keywords
modification mechanism, modified bitumen, preparation scheme, properties, recycled engine oil bottoms, styrene–butadiene–styrene
Other note
Citation
Li, X, Guo, D, Xu, M, Guo, C & Wang, D 2023, ' REOB/SBS Composite-Modified Bitumen Preparation and Modification Mechanism Analysis ', Buildings, vol. 13, no. 7, 1601 . https://doi.org/10.3390/buildings13071601