Cargando…

Recycled Heavy Bio Oil as Performance Enhancer for Rubberized Bituminous Binders

Asphalt rubber (AR) is a sustainable paving material with merits including waste tire consumption, low traffic noise, and enhanced mechanical performance. However, the poor workability and storage stability limited its further application. This study attempted to alleviate these two concerns of AR s...

Descripción completa

Detalles Bibliográficos
Autores principales: Yu, Jiangmiao, Ren, Zhibin, Gao, Zheming, Wu, Qi, Zhu, Zihan, Yu, Huayang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6572319/
https://www.ncbi.nlm.nih.gov/pubmed/31060252
http://dx.doi.org/10.3390/polym11050800
_version_ 1783427612820897792
author Yu, Jiangmiao
Ren, Zhibin
Gao, Zheming
Wu, Qi
Zhu, Zihan
Yu, Huayang
author_facet Yu, Jiangmiao
Ren, Zhibin
Gao, Zheming
Wu, Qi
Zhu, Zihan
Yu, Huayang
author_sort Yu, Jiangmiao
collection PubMed
description Asphalt rubber (AR) is a sustainable paving material with merits including waste tire consumption, low traffic noise, and enhanced mechanical performance. However, the poor workability and storage stability limited its further application. This study attempted to alleviate these two concerns of AR simultaneously by incorporating heavy bio oil (HBO). To achieve this goal, bio-AR binders with three different mixing sequences were prepared. A series of rheological and chemical tests were conducted. Test results prove that the bio-AR binders exhibited superior rutting and fatigue resistance compared to AR binder. The viscosity values of bio-ARs were closed to AR modified with commercial warm mix additive, which indicates enhancement in workability. Due to the relatively high density of HBO, the density difference between the asphalt liquid phase and crumb rubber in the bio-AR system narrowed, which brought improved storage stability. Among bio-ARs prepared with different mixing sequences, the direct mixing one (ARB) had the most satisfied overall performance. The early incorporation of HBO had limited negative influence on binder performance, but allowed for more energy saving during the bio-AR binder production. Future study will be conducted on performance of bio-AR mixtures and quantitative estimation of its energy saving during the blending and compacting process.
format Online
Article
Text
id pubmed-6572319
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-65723192019-06-18 Recycled Heavy Bio Oil as Performance Enhancer for Rubberized Bituminous Binders Yu, Jiangmiao Ren, Zhibin Gao, Zheming Wu, Qi Zhu, Zihan Yu, Huayang Polymers (Basel) Article Asphalt rubber (AR) is a sustainable paving material with merits including waste tire consumption, low traffic noise, and enhanced mechanical performance. However, the poor workability and storage stability limited its further application. This study attempted to alleviate these two concerns of AR simultaneously by incorporating heavy bio oil (HBO). To achieve this goal, bio-AR binders with three different mixing sequences were prepared. A series of rheological and chemical tests were conducted. Test results prove that the bio-AR binders exhibited superior rutting and fatigue resistance compared to AR binder. The viscosity values of bio-ARs were closed to AR modified with commercial warm mix additive, which indicates enhancement in workability. Due to the relatively high density of HBO, the density difference between the asphalt liquid phase and crumb rubber in the bio-AR system narrowed, which brought improved storage stability. Among bio-ARs prepared with different mixing sequences, the direct mixing one (ARB) had the most satisfied overall performance. The early incorporation of HBO had limited negative influence on binder performance, but allowed for more energy saving during the bio-AR binder production. Future study will be conducted on performance of bio-AR mixtures and quantitative estimation of its energy saving during the blending and compacting process. MDPI 2019-05-04 /pmc/articles/PMC6572319/ /pubmed/31060252 http://dx.doi.org/10.3390/polym11050800 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yu, Jiangmiao
Ren, Zhibin
Gao, Zheming
Wu, Qi
Zhu, Zihan
Yu, Huayang
Recycled Heavy Bio Oil as Performance Enhancer for Rubberized Bituminous Binders
title Recycled Heavy Bio Oil as Performance Enhancer for Rubberized Bituminous Binders
title_full Recycled Heavy Bio Oil as Performance Enhancer for Rubberized Bituminous Binders
title_fullStr Recycled Heavy Bio Oil as Performance Enhancer for Rubberized Bituminous Binders
title_full_unstemmed Recycled Heavy Bio Oil as Performance Enhancer for Rubberized Bituminous Binders
title_short Recycled Heavy Bio Oil as Performance Enhancer for Rubberized Bituminous Binders
title_sort recycled heavy bio oil as performance enhancer for rubberized bituminous binders
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6572319/
https://www.ncbi.nlm.nih.gov/pubmed/31060252
http://dx.doi.org/10.3390/polym11050800
work_keys_str_mv AT yujiangmiao recycledheavybiooilasperformanceenhancerforrubberizedbituminousbinders
AT renzhibin recycledheavybiooilasperformanceenhancerforrubberizedbituminousbinders
AT gaozheming recycledheavybiooilasperformanceenhancerforrubberizedbituminousbinders
AT wuqi recycledheavybiooilasperformanceenhancerforrubberizedbituminousbinders
AT zhuzihan recycledheavybiooilasperformanceenhancerforrubberizedbituminousbinders
AT yuhuayang recycledheavybiooilasperformanceenhancerforrubberizedbituminousbinders