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Viscoelastic Behavior and Phase Structure of High-Content SBS-Modified Asphalt

To investigate the effect of styrene-butadiene-styrene (SBS) modifier content on the viscoelastic behavior of SBS-modified asphalt (SBSMA) at different temperatures and phase structures, the star SBS modifier was chosen to fabricate seven types of SBSMA with different contents. Multiple stress creep...

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Autores principales: Yuan, Dongdong, Xing, Chengwei, Jiang, Wei, Xiao, Jingjing, Wu, Wangjie, Li, Pengfei, Li, Yupeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9229837/
https://www.ncbi.nlm.nih.gov/pubmed/35746051
http://dx.doi.org/10.3390/polym14122476
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author Yuan, Dongdong
Xing, Chengwei
Jiang, Wei
Xiao, Jingjing
Wu, Wangjie
Li, Pengfei
Li, Yupeng
author_facet Yuan, Dongdong
Xing, Chengwei
Jiang, Wei
Xiao, Jingjing
Wu, Wangjie
Li, Pengfei
Li, Yupeng
author_sort Yuan, Dongdong
collection PubMed
description To investigate the effect of styrene-butadiene-styrene (SBS) modifier content on the viscoelastic behavior of SBS-modified asphalt (SBSMA) at different temperatures and phase structures, the star SBS modifier was chosen to fabricate seven types of SBSMA with different contents. Multiple stress creep recovery (MSCR), linear amplitude sweep (LAS), and low-temperature frequency sweep tests were adopted to study the influence of SBS modifier content on the viscoelastic performance of SBSMA at high to low temperatures. The SBSMA’s microstructure with different contents was investigated using a fluorescence microscope. The results indicated that the change in non-recoverable creep compliance and creep recovery rate was bounded by 4.5% content at high temperatures, with an apparent turning point. The changing slope of content at less than 4.5% was much higher than that of the content greater than 4.5%. At medium temperatures, the fatigue life of SBSMA increased exponentially with the rising modifier content. The rate of increase in fatigue life was the largest as the content increased from 4.5% to 6.0%. At low temperatures, the low-temperature viscoelastic property index G (60 s) of SBSMA decreased logarithmically as the modifier content increased. In terms of the microscopic phase structure, the SBS modifier gradually changed from the dispersed to the continuous phase state with the increasing SBS modifier content.
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spelling pubmed-92298372022-06-25 Viscoelastic Behavior and Phase Structure of High-Content SBS-Modified Asphalt Yuan, Dongdong Xing, Chengwei Jiang, Wei Xiao, Jingjing Wu, Wangjie Li, Pengfei Li, Yupeng Polymers (Basel) Article To investigate the effect of styrene-butadiene-styrene (SBS) modifier content on the viscoelastic behavior of SBS-modified asphalt (SBSMA) at different temperatures and phase structures, the star SBS modifier was chosen to fabricate seven types of SBSMA with different contents. Multiple stress creep recovery (MSCR), linear amplitude sweep (LAS), and low-temperature frequency sweep tests were adopted to study the influence of SBS modifier content on the viscoelastic performance of SBSMA at high to low temperatures. The SBSMA’s microstructure with different contents was investigated using a fluorescence microscope. The results indicated that the change in non-recoverable creep compliance and creep recovery rate was bounded by 4.5% content at high temperatures, with an apparent turning point. The changing slope of content at less than 4.5% was much higher than that of the content greater than 4.5%. At medium temperatures, the fatigue life of SBSMA increased exponentially with the rising modifier content. The rate of increase in fatigue life was the largest as the content increased from 4.5% to 6.0%. At low temperatures, the low-temperature viscoelastic property index G (60 s) of SBSMA decreased logarithmically as the modifier content increased. In terms of the microscopic phase structure, the SBS modifier gradually changed from the dispersed to the continuous phase state with the increasing SBS modifier content. MDPI 2022-06-17 /pmc/articles/PMC9229837/ /pubmed/35746051 http://dx.doi.org/10.3390/polym14122476 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yuan, Dongdong
Xing, Chengwei
Jiang, Wei
Xiao, Jingjing
Wu, Wangjie
Li, Pengfei
Li, Yupeng
Viscoelastic Behavior and Phase Structure of High-Content SBS-Modified Asphalt
title Viscoelastic Behavior and Phase Structure of High-Content SBS-Modified Asphalt
title_full Viscoelastic Behavior and Phase Structure of High-Content SBS-Modified Asphalt
title_fullStr Viscoelastic Behavior and Phase Structure of High-Content SBS-Modified Asphalt
title_full_unstemmed Viscoelastic Behavior and Phase Structure of High-Content SBS-Modified Asphalt
title_short Viscoelastic Behavior and Phase Structure of High-Content SBS-Modified Asphalt
title_sort viscoelastic behavior and phase structure of high-content sbs-modified asphalt
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9229837/
https://www.ncbi.nlm.nih.gov/pubmed/35746051
http://dx.doi.org/10.3390/polym14122476
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