Use of waste oil/styrene-butadiene-rubber blends as rejuvenators for aged bitumen

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Abstract

This study elaborates the influence of blends formulated by waste oil (WO) and styrene-butadiene rubber (SBR) on thermo-mechanical and chemical compositional characteristics of rejuvenated bitumen. The results show that both WEO (waste engine oil) and WCO (waste cooking oil) can compensate viscous component for reclaimed bitumen, and the effect of WCO is more significant. However, WO-rejuvenated bitumen has considerable drawbacks in terms of temperature susceptibility and flow resistance, but dramatic improvement after being added with SBR has been noticed. Furthermore, the rejuvenation mechanism of WO/SBR blends is revealed by using FTIR tests, which shows that the physical blending mainly determines the rejuvenation mechanism when the WO/SBR blends are used in bitumen. The combination of WO and SBR is beneficial for improving the temperature susceptibility and rutting resistance of rejuvenated bitumen.
Original languageEnglish
Title of host publicationFunctional pavement
Subtitle of host publicationProceedings of the 6th Chinese-European Workshop on Functional Pavement Design, CEW 2020
EditorsXianhua Chen, Jun Yang, Markus Oeser, Haopeng Wang
PublisherCRC Press / Balkema - Taylor & Francis Group
Pages7-12
Number of pages6
ISBN (Electronic)9780367726102
DOIs
Publication statusPublished - 2021
Event6th Chinese-European Workshop on Functional Pavement Design, CEW 2020 - Virtual, Online, China
Duration: 18 Oct 202021 Oct 2020

Conference

Conference6th Chinese-European Workshop on Functional Pavement Design, CEW 2020
CountryChina
CityVirtual, Online
Period18/10/2021/10/20

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