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Coatings
Special Issues
Novel Cleaner Materials for Pavements
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Novel Cleaner Materials for Pavements

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Environmental Aspects in Colloid and Interface Science".

Deadline for manuscript submissions: 15 August 2024 | Viewed by 4166

Special Issue Editors

Dr. Junfeng Gao

E-Mail Website
Guest Editor
College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
Interests: materials and structure for pavement; asphalt pavement; coarse and fine aggregate; alternative materials for road engineering; construction and demolition waste; functional pavement materials
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Peng Guo

E-Mail Website
Guest Editor
College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
Interests: recycled waste materials in pavements; functional materials; anti-icing materials; pavement preventive maintenance; asphalt aging and anti-aging
Dr. Jue Li

E-Mail Website
Guest Editor
College of Traffic & Transportation, Chongqing Jiaotong University, Chongqing 400074, China
Interests: road engineering; construction and demolition waste; coarse/fine aggregate; polymer concrete; unbonded granular material; dynamic response; discrete element method
Special Issues, Collections and Topics in MDPI journals
Dr. Chonghui Wang

E-Mail Website
Guest Editor
College of Engineering and Physical Sciences, Aston University, Birmingham B4 7ET, UK
Interests: pavement engineering; discrete element modelling (DEM); multiscale modelling; pavement compaction; pavement functional behavior
Special Issues, Collections and Topics in MDPI journals
Dr. Ziye Ma

E-Mail
Guest Editor Assistant
Department of Civil and Architectural Engineering, KTH-Royal Institute of Technology, Brinellvägen 23, 10044 Stockholm, Sweden
Interests: sustainable and functional pavement materials; disease detection and maintenance technology; tire-road contact behavior

Special Issue Information

Dear Colleagues,

We are pleased to invite you to contribute your research to our Special Issue “Novel Cleaner Materials for Pavements”.

Due to the escalating demands for pavement service levels, the requirements of eco-friendly and low-carbon development, and the advances in materials science and cross-discipline research, the pursuit of cleaner and more sustainable materials has witnessed significant growth in recent years. Meanwhile, it is widely recognized that pavement materials are pivotal in shaping the construction and maintenance of road engineering. Thus, in order to promote the pioneering of cleaner materials for pavements, we are thrilled to launch this new Special Issue in Coatings, dedicated to collating original research articles as well as comprehensive review articles.

This Special Issue focuses on the newest research in cleaner and more sustainable materials in the fields of pavement engineering. We place a strong emphasis on interdisciplinary research and practical application. Potential topics include, but are not limited to, the following:

  • Recycled waste materials in pavements;
  • Bio-based materials;
  • Chemistry of alternative binders;
  • Low-emission materials;
  • Low-noise materials;
  • Functional pavement materials.

Dr. Junfeng Gao
Prof. Dr. Peng Guo
Dr. Jue Li
Dr. Chonghui Wang
Guest Editors

Dr. Ziye Ma
Guest Editor Assistant

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. Coatings is an international peer-reviewed open access monthly 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 2600 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

  • pavement
  • cleaner materials
  • recycled waste materials
  • bio-based materials
  • alternative binders
  • low-emission
  • low-noise

Published Papers (6 papers)

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Research

16 pages, 6090 KiB  
Article
Evaluation of the Fatigue Performance of Full-Depth Reclamation with Portland Cement Material Based on the Weibull Distribution Model
by Yongxiang Li, Longwei Zhao, Junfeng Gao, Yanyan Ru and Haiwei Zhang
Coatings 2024, 14(4), 437; https://doi.org/10.3390/coatings14040437 - 07 Apr 2024
Viewed by 356
Abstract
The full-depth reclamation with Portland cement (FDR-PC) technology embodies an environmentally friendly approach to solving the damage to old asphalt pavement. Fatigue failure emerges as the predominant mode of degradation for FDR-PC pavement. The fatigue characteristics of the full-depth reclamation with Portland cement [...] Read more.
The full-depth reclamation with Portland cement (FDR-PC) technology embodies an environmentally friendly approach to solving the damage to old asphalt pavement. Fatigue failure emerges as the predominant mode of degradation for FDR-PC pavement. The fatigue characteristics of the full-depth reclamation with Portland cement cold recycled mixtures were evaluated through four-point bending tests. Three contents (4%, 5%, 6%) of cement and three base-to-surface ratios (10:0, 8:2, 6:4) were utilized. The fatigue equations were derived for the mixtures using a two-parameter Weibull distribution. The results indicate that all correlation coefficients of the Weibull distribution model surpass 0.88, effectively projecting the lifespan of FDR-PC. With increases in cement contents and base-to-surface ratios, the fatigue life of the mixture extends, though with an augmentation of stress sensitivity. Comparative analysis with the fatigue equation model parameters of the current Chinese specifications for the design of highway asphalt pavement reveals that mixtures with a 4% cement content and combinations of a 5% cement content with a low base-to-surface ratio meet the requirements for inorganic-binder-stabilized soil. Additionally, mixtures with a 5% cement content and a high base-to-surface ratio, along with those with a 6% cement content, fulfill the specifications for inorganic-binder-stabilized granular materials. Full article
(This article belongs to the Special Issue Novel Cleaner Materials for Pavements)
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10 pages, 3495 KiB  
Article
Study on Plugging Microfracture by Using High-Temperature Emulsified Bitumen
by Liang Yang, Xiang Chen, Linhao Gu, Yan Chen and Shuang Shi
Coatings 2024, 14(4), 387; https://doi.org/10.3390/coatings14040387 - 26 Mar 2024
Viewed by 471
Abstract
A new kind of modified emulsified bitumen used to plug a microcrack was studied. The sizes of high-temperature emulsified bitumen were fit for the sizes of the microcrack, which were approved by the scanning electron microscope and laser particle size analyzer. Some tests [...] Read more.
A new kind of modified emulsified bitumen used to plug a microcrack was studied. The sizes of high-temperature emulsified bitumen were fit for the sizes of the microcrack, which were approved by the scanning electron microscope and laser particle size analyzer. Some tests have been designed to demonstrate that the polymer could be used to promote the softening point of modified asphalt, and the high-temperature emulsified bitumen has also shown an excellent performance in terms of static filtration, the viscous coefficient, and extreme pressure lubrication, as well as to inhibit ting shale expansion. The permeability recovery could reach 88.26%, which meets the specification requirements. The mud cake, which was formed by high-temperature emulsified bitumen as an additive, was thin, tough, and dense, which was proved by the scanning electron microscope. The process used to obtain this additive was simple, and the performance of the plugging microfracture was excellent, so this kind of plugging agent could have a better application future. Full article
(This article belongs to the Special Issue Novel Cleaner Materials for Pavements)
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26 pages, 19238 KiB  
Article
Enhancing Sulfate Erosion Resistance in Ultra-High-Performance Concrete through Mix Design Optimization Using the Modified Andreasen and Andersen Method
by Guan Wang, Wenlin Chen, Xiangyu Shen, Xin Ren, Jiawei Niu, Sihang Pan, Yifan Huang and Jinliang Wu
Coatings 2024, 14(3), 274; https://doi.org/10.3390/coatings14030274 - 23 Feb 2024
Viewed by 675
Abstract
This study presents an in-depth investigation into optimizing the mix design of ultra-high-performance concrete (UHPC) for enhanced sulfate erosion resistance, utilizing the modified Andreasen and Andersen (MAA) method. By testing the mechanical properties and slump flow of UHPC, it was determined that the [...] Read more.
This study presents an in-depth investigation into optimizing the mix design of ultra-high-performance concrete (UHPC) for enhanced sulfate erosion resistance, utilizing the modified Andreasen and Andersen (MAA) method. By testing the mechanical properties and slump flow of UHPC, it was determined that the optimal W/B = 0.2, and the best volume content of steel fibers is 2%. Through long-term tests lasting 360 days on three groups of UHPC specimens under different curing conditions, their mass loss, compressive strength corrosion resistance coefficient, surface appearance, and erosion layer thickness were tested. The results indicate that under sulfate attack, the mass and compressive strength corrosion resistance coefficients of UHPC specimens showed a trend of first increasing and then decreasing, due to the formation and expansion of ettringite and gypsum. The thickness of the erosion layer increases over time. By 360 days, the internal damage caused by sulfate attack is about twice as severe as it was after 60 days. However, the addition of steel fibers was found to effectively mitigate these effects, reducing mass loss and preserving the structural integrity of UHPC. Full article
(This article belongs to the Special Issue Novel Cleaner Materials for Pavements)
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18 pages, 3509 KiB  
Article
The Early Performance Development of Hot In-Place Recycled Asphalt Mixture
by Qijia Shi, Chaochao Liu, Yanhua Xue, Yiyang Xue, Chen Zhang, Wenlong Lu, Yiyi Wen and Songtao Lv
Coatings 2024, 14(2), 175; https://doi.org/10.3390/coatings14020175 - 30 Jan 2024
Viewed by 783
Abstract
With increasing societal attention being directed to resource and environment problems, the research focus on high reclaimed asphalt content mixtures has become pertinent. The degree of asphalt fusion in the thermal regeneration process of a high RAP content reclaimed asphalt mixture has a [...] Read more.
With increasing societal attention being directed to resource and environment problems, the research focus on high reclaimed asphalt content mixtures has become pertinent. The degree of asphalt fusion in the thermal regeneration process of a high RAP content reclaimed asphalt mixture has a great influence on its performance. In order to explore the development process of hot in-place recycling mixture performance along with internal asphalt fusion, this study conducted research on a geothermal regeneration mixture with 80% RAP content. Dynamic shear rheology (DSR), infrared spectroscopy, and scanning electron microscopy were used to investigate the fusion of recycled mixture under different placement times (1 day, 4 days, and 7 days), and the road performance and fatigue life of the recycled mixture under different placement times were then studied. The results showed that the fusion degree of old asphalt and new asphalt in a recycled asphalt mixture reached 100%, and gradually increased with the extension of placement time. With the increase in placement time, the high temperature performance of the regenerated mixture gradually decreased, the water stability gradually increased, and the low-temperature performance and fatigue life significantly increased from 1 day to 7 days, by 19% and 32%, respectively. Full article
(This article belongs to the Special Issue Novel Cleaner Materials for Pavements)
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21 pages, 31329 KiB  
Article
Frost-Heaving Behavior and Enhancement Approaches of Cement-Based Grout Materials under Freeze–Thaw Conditions
by Yongfeng Wei, Hui Dou, Jiangtao Gao, Run Su and Shengjun Ma
Coatings 2023, 13(11), 1919; https://doi.org/10.3390/coatings13111919 - 09 Nov 2023
Viewed by 625
Abstract
In the seasonally frozen regions, during the grouting of prestressed bridge ducts in low-temperature environments, incompletely cured grout materials undergo volumetric changes due to freeze–thaw cycling, resulting in structural cracks along the prestressing ducts of the bridge, thereby diminishing the bridge’s operational lifespan. [...] Read more.
In the seasonally frozen regions, during the grouting of prestressed bridge ducts in low-temperature environments, incompletely cured grout materials undergo volumetric changes due to freeze–thaw cycling, resulting in structural cracks along the prestressing ducts of the bridge, thereby diminishing the bridge’s operational lifespan. In order to investigate the freeze–thaw characteristics of grouting materials under the influence of freeze–thaw cycles and propose improvement measures, the influence of various additives on the freeze–thaw stress characteristics of mortar under freeze–thaw cycle conditions was elucidated through freeze–thaw stress tests. The mechanisms for improving the freeze–thaw characteristics of grouting materials were explored through analyses of free water content, setting time, compressive strength, XRD, and SEM. In light of the requirements for comprehensive performance of grouting materials, composite additives are employed to enhance the freeze–thaw performance of the grout. The results indicate that reducing the water-cement ratio, incorporating calcium formate, sulfoaluminate cement, air-entraining agents, and carbamide all have a positive impact on mitigating frost-heaving stress in grout materials. However, the improvement mechanisms differ, and employing a single measure alone is insufficient to effectively reduce frost-heaving stress while meeting performance criteria such as compressive strength, setting time, and flowability. Free water content emerges as a crucial indicator determining the magnitude of frost-heaving stress in grout materials, with 11.5% of free water content representing the critical threshold for frost heaving in grout materials. Utilizing composite admixtures can simultaneously decrease free water content, lower the freezing point of free water, and alleviate frost-heaving deformation, resulting in a more efficient reduction of frost-heaving stress. When the admixture content reaches 9.9%, frost-heaving stress is eliminated, and the comprehensive performance parameters, including compressive strength, setting time, and flowability, meet the specified requirements. Overall, the conclusions of this research will offer a scientific foundation for the choice of cold-resistant grouting materials, the mitigation of grout material freeze–thaw risk, and the improvement of quality assurance levels in bridge construction within seasonally frozen areas. Full article
(This article belongs to the Special Issue Novel Cleaner Materials for Pavements)
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17 pages, 9768 KiB  
Article
Experimental Evaluation of the Properties of Asphalt Binders Modified with Calcium Sulfate Anhydrous Whiskers and Polyester Fibers
by Taotao Fan, Chundi Si and Junfeng Gao
Coatings 2023, 13(10), 1802; https://doi.org/10.3390/coatings13101802 - 20 Oct 2023
Viewed by 747
Abstract
The use of waste calcium sulfate whiskers in pavement construction is cost-effective and beneficial to the environment. In this paper, modified asphalt binders are prepared by adding calcium sulfate anhydrous whiskers (ACSW, 9 wt.%,11 wt.%, and 13 wt.% by weight of asphalt binder) [...] Read more.
The use of waste calcium sulfate whiskers in pavement construction is cost-effective and beneficial to the environment. In this paper, modified asphalt binders are prepared by adding calcium sulfate anhydrous whiskers (ACSW, 9 wt.%,11 wt.%, and 13 wt.% by weight of asphalt binder) and polyester fibers (4 wt.%,6 wt.%, and 8 wt.% by weight of asphalt binder). The viscosity-temperature, rheological, and low-temperature properties of the modified asphalt binder were evaluated using the Brookfield rotational viscosity test, the dynamic shear rheometer (DSR) test, the bending beam rheometer (BBR) test, and the force ductility test. The results demonstrated that the addition of the ACSW and polyester fiber could improve the anti-deformation and low-temperature properties of the asphalt binders, but reduce their viscosity-temperature properties to some extent. The modified asphalt binder with 11 wt.% ACSW and 8% polyester fiber showed the best anti-deformation property, while the 11 wt.% ACSW and 6 wt.% polyester fiber modified asphalt binder had a better low-temperature performance. The force ductility test was more suitable than the BBR test to characterize the low-temperature properties of the modified asphalt binders. The Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) tests were conducted to study the functional groups and micro-structure of the modified asphalt binders, and the results indicated that no new functional groups were generated and that the interaction between the ACSW, polyester fiber, and asphalt binder was a physical adsorption and interleaving process. Full article
(This article belongs to the Special Issue Novel Cleaner Materials for Pavements)
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