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Polymers
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Polymer Modified Asphalt for Sustainable Pavements
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Polymer Modified Asphalt for Sustainable Pavements

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (31 March 2025) | Viewed by 2054

Special Issue Editors

Prof. Dr. Quantao Liu

E-Mail Website
Guest Editor
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
Interests: pavement maintenance; asphalt concrete; self-healing; multi-cavity capsules
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Zhuangzhuang Liu

E-Mail Website
Guest Editor
School of Highway, Chang’an University, Xi’an, China
Interests: road material behavior and engineering resilience; smart road materials and pavements; roadway resource evaluation; environment & traffic monitoring
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Chao Li

E-Mail Website
Guest Editor
School of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
Interests: sustainable pavement materials; polyphosphoric acid modified asphalt; rubber modified asphalt; PPA-SBS composite modified asphalt

Special Issue Information

Dear Colleagues,

Asphalt pavements are highly preferred in modern road construction due to their numerous advantages. However, the road performance of asphalt pavements is likely to deteriorate rapidly due to traffic load and environmental factors. The increases in traffic volume and vehicle load have put forward higher requirements for pavement materials. Modifying asphalt with polymer materials such as styrene-butadiene-styrene, styrene-butadiene rubber, polyethylene, crumb rubber, and polyurethane, can significantly improve its initial performance and stability during use. Consequently, recent years have witnessed an increasing use of polymer-modified asphalt binders in practical pavement engineering, which successfully improve the road performance and durability of the pavements. Polymer-modified asphalts are also widely used in pavement maintenance. Polymer modifiers are even used during the recycling of polymer-modified asphalt pavement at the end of its life cycle to supplement or to regenerate the degraded polymer modifiers.

Polymer-modified asphalt has great application potential in the construction of sustainable pavements. Numerous research studies are being conducted to further optimize different aspects of polymer-modified asphalt. This Special Issue welcomes articles on polymer-modified asphalt, covering a broad range of topics such as the development of new polymer materials, the performance evaluation of polymer-modified asphalt and asphalt mixtures, and the optimization of the manufacture and properties of polymer-modified asphalt.

Prof. Dr. Quantao Liu
Prof. Dr. Zhuangzhuang Liu
Prof. Dr. Chao Li
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • asphalt pavement
  • sustainable pavement
  • polymer materials
  • cement additive
  • styrene-butadiene-styrene
  • styrene-butadiene rubber
  • polyethylene
  • crumb rubber
  • polyurethane

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Published Papers (3 papers)

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Research

24 pages, 3400 KiB  
Article
Impact of Curing Time and Temperature on Bond Performance of Epoxy Resin Adhesives for Steel Bridge Decks
by Chuanbin Fan, Huanyong Chen, Feng Lin, Weixiong Li, Xuetang Xiong, Bo Chen and Huayang Yu
Polymers 2025, 17(8), 1018; https://doi.org/10.3390/polym17081018 - 9 Apr 2025
Viewed by 357
Abstract
The bonding performance of epoxy resin adhesives plays a critical role in ensuring interlayer adhesion and long-term durability in steel bridge deck pavements. However, the construction environment temperature and curing time significantly influence the bonding properties of epoxy resin adhesives. To address this [...] Read more.
The bonding performance of epoxy resin adhesives plays a critical role in ensuring interlayer adhesion and long-term durability in steel bridge deck pavements. However, the construction environment temperature and curing time significantly influence the bonding properties of epoxy resin adhesives. To address this issue, systematic evaluations of the bonding performance and tack-free time of epoxy resin adhesives were conducted. The results demonstrate that under identical curing durations, the tensile bond strength between the epoxy resin bonding layer and steel plate increases with higher curing temperatures. Similarly, at constant curing temperatures, extended curing times lead to improved tensile strength. Both higher temperatures and longer curing durations reduce the tack-free time of the epoxy resin adhesive. Under natural outdoor curing conditions, the epoxy resin adhesive achieves design requirements for both tensile strength and tack-free time after 48 h of curing, ensuring optimal interlayer bonding and workability. Conversely, prolonged curing beyond 72 h results in significantly reduced bonding strength while maintaining acceptable tack-free time. For ambient temperature conditions, the optimal curing duration for epoxy resin adhesive is determined to be 48~72 h, balancing both bonding performance and construction requirements (preventing adhesion to construction equipment). This research offers technical guidance for the field construction of epoxy pavement on steel bridge decks by establishing optimal curing protocols for epoxy resin adhesives to ensure reliable bonding performance and construction workability. Full article
(This article belongs to the Special Issue Polymer Modified Asphalt for Sustainable Pavements)
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22 pages, 9262 KiB  
Article
Fatigue Damage Evolution Mechanism of Asphalt Binder Under Variable Stress Repeated Loading
by Weijie Li, Jintao Lin, Weidi Lin and Huayang Yu
Polymers 2025, 17(4), 507; https://doi.org/10.3390/polym17040507 - 15 Feb 2025
Viewed by 396
Abstract
Continuous loading on asphalt pavements induces fatigue damage at the interface between the asphalt binder and aggregate or within the binder itself. The understanding of asphalt’s fatigue response is considered crucial for the prolongation of pavement service life. Variable stress fatigue tests were [...] Read more.
Continuous loading on asphalt pavements induces fatigue damage at the interface between the asphalt binder and aggregate or within the binder itself. The understanding of asphalt’s fatigue response is considered crucial for the prolongation of pavement service life. Variable stress fatigue tests were conducted on asphalt binders, with conditions such as stress amplitude being altered to analyze fatigue performance and life. This study refines asphalt fatigue evaluation systems, introducing a variable stress time sweep test. Modulus recovery after stress changes was revealed through rheological analysis, indicating damage recovery. Fracture surface analysis showed that increased high–stress loadings resulted in reduced edge flow zone width and a flatter surface. Statistical analysis indicated an “exercise effect”, enhancing fatigue life in the second stage. Stress transitions altered fatigue crack paths, surpassing Miner’s linear criterion prediction. The fatigue life curve was accurately fitted using the two–stage life model, affirming its applicability in evaluating variable stress fatigue tests. Full article
(This article belongs to the Special Issue Polymer Modified Asphalt for Sustainable Pavements)
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20 pages, 7368 KiB  
Article
Study on the Effect of SBS/HVA/CRM Composite-Modified Asphalt on the Performance of Recycled Asphalt Mixtures
by Haoming Li, Hongkui Wang, Junning Lin, Jiangang Yang and Yuquan Yao
Polymers 2024, 16(22), 3226; https://doi.org/10.3390/polym16223226 - 20 Nov 2024
Cited by 2 | Viewed by 840
Abstract
To investigate the feasibility of composite modification techniques in improving the performance of recycled asphalt mixtures, in this study, the high-viscosity agent (HVA) and crumb-rubber materials (CRM) were used to modify asphalt with a styrene-butadiene-styrene block copolymer (SBS), in order to prepare SBS-HVA [...] Read more.
To investigate the feasibility of composite modification techniques in improving the performance of recycled asphalt mixtures, in this study, the high-viscosity agent (HVA) and crumb-rubber materials (CRM) were used to modify asphalt with a styrene-butadiene-styrene block copolymer (SBS), in order to prepare SBS-HVA and SBS-CRM composite-modified asphalts. The virgin asphalt mixtures, as well as three asphalt types of recycled asphalt mixtures with 50% reclaimed asphalt pavement (RAP) content, were designed. The optimal asphalt content of the four types of asphalt mixtures was analyzed, and the rutting test, the asphalt bond strength test, the moisture-induced sensitivity test, and the low-temperature cracking resistance test were conducted to investigate the performance of the four types of asphalt mixtures. The results showed that the higher the asphalt kinematic viscosity, the higher the optimum asphalt content of the asphalt mixtures under the same air voids. HVA significantly improves the adhesion between SBS-modified asphalt and aggregate under dry conditions, while SBS-CRM composite-modified asphalt performs similarly to SBS-modified asphalt. Before and after water immersion, the degree of pull-out strength decay between the asphalts and aggregates follows the sequence of SBS-CRM- > SBS- > SBS-HVA-modified asphalts. Additionally, the residual pull-out work follows the sequence of SBS-HVA- > SBS-CRM- > SBS-modified asphalt. SBS-CRM composite-modified asphalt can significantly improve the moisture sensitivity of recycled asphalt mixtures, as well as low-temperature cracking resistance, while SBS-CRM composite-modified asphalt only improves the low-temperature cracking resistance of recycled asphalt mixtures, and does not improve the moisture sensitivity. Based on the results, it is recommended to select the appropriate composite modification method based on the climate and loading conditions, to maximize the value of asphalt, and to achieve sustainable and durable pavement. Full article
(This article belongs to the Special Issue Polymer Modified Asphalt for Sustainable Pavements)
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