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Gradation Design of Epoxy–Asphalt Mixtures for Steel Bridge Deck Pavements Optimized for Skid Resistance in Hot and Humid Climates.

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Title: Gradation Design of Epoxy–Asphalt Mixtures for Steel Bridge Deck Pavements Optimized for Skid Resistance in Hot and Humid Climates.
Authors: Du, Peidong1 (AUTHOR) lucasdup@163.com, He, Qinghua1,2 (AUTHOR), Han, Zhenqiang1,3 (AUTHOR), Zhang, Qiang1,2 (AUTHOR), Xiong, Chuan2,3 (AUTHOR), Zhang, Yujie1,3 (AUTHOR)
Source: Polymers (20734360). May2026, Vol. 18 Issue 9, p1088. 25p.
Subjects: Skid resistance, Particle size distribution, Orthogonal arrays, Asphalt pavements, Surface texture, Tropical climate
Abstract: To address the pronounced degradation of skid resistance in steel bridge deck pavements exposed to hot, humid, and rainy environments, this study investigates an EA-10 epoxy–asphalt mixture and proposes a gradation design method with skid resistance as the primary performance objective. An orthogonal experimental design was employed to systematically analyze different combinations of sieve passing rates, and after determining an optimum asphalt–aggregate ratio of 6.25%, the skid resistance of the mixtures under various service conditions was evaluated using macrotexture depth, dry friction coefficient, and water-film friction coefficient. The results demonstrate that the formation of skid resistance follows a mechanism in which the macroscopic framework and microscopic pores interact synergistically. The passing rate of the 4.75 mm sieve is the dominant factor governing macrotexture depth, while the 0.3 mm sieve plays a critical regulating role in texture development; meanwhile, the passing rates of the 2.36 mm and 0.6 mm sieves exert a decisive influence on both dry and water-film friction coefficients. When the passing rates of the 4.75 mm, 0.3 mm, 2.36 mm, and 0.6 mm sieves are approximately 70%, 26.5%, 58–61%, and 34%, respectively, the mixture exhibits superior overall skid-resistance performance. Based on the evaluation results of the International Friction Index (IFI), the optimized gradation shows a more stable level of skid resistance under wet and slippery conditions. These findings provide quantitative evidence and engineering guidance for the skid-resistance-oriented gradation design of epoxy–asphalt mixtures used in steel bridge deck pavements in hot and humid regions. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 193716223
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Gradation Design of Epoxy–Asphalt Mixtures for Steel Bridge Deck Pavements Optimized for Skid Resistance in Hot and Humid Climates.
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  Data: <searchLink fieldCode="AR" term="%22Du%2C+Peidong%22">Du, Peidong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lucasdup@163.com</i><br /><searchLink fieldCode="AR" term="%22He%2C+Qinghua%22">He, Qinghua</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Zhenqiang%22">Han, Zhenqiang</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Qiang%22">Zhang, Qiang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xiong%2C+Chuan%22">Xiong, Chuan</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yujie%22">Zhang, Yujie</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. May2026, Vol. 18 Issue 9, p1088. 25p.
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  Data: <searchLink fieldCode="DE" term="%22Skid+resistance%22">Skid resistance</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+size+distribution%22">Particle size distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Orthogonal+arrays%22">Orthogonal arrays</searchLink><br /><searchLink fieldCode="DE" term="%22Asphalt+pavements%22">Asphalt pavements</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+texture%22">Surface texture</searchLink><br /><searchLink fieldCode="DE" term="%22Tropical+climate%22">Tropical climate</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To address the pronounced degradation of skid resistance in steel bridge deck pavements exposed to hot, humid, and rainy environments, this study investigates an EA-10 epoxy–asphalt mixture and proposes a gradation design method with skid resistance as the primary performance objective. An orthogonal experimental design was employed to systematically analyze different combinations of sieve passing rates, and after determining an optimum asphalt–aggregate ratio of 6.25%, the skid resistance of the mixtures under various service conditions was evaluated using macrotexture depth, dry friction coefficient, and water-film friction coefficient. The results demonstrate that the formation of skid resistance follows a mechanism in which the macroscopic framework and microscopic pores interact synergistically. The passing rate of the 4.75 mm sieve is the dominant factor governing macrotexture depth, while the 0.3 mm sieve plays a critical regulating role in texture development; meanwhile, the passing rates of the 2.36 mm and 0.6 mm sieves exert a decisive influence on both dry and water-film friction coefficients. When the passing rates of the 4.75 mm, 0.3 mm, 2.36 mm, and 0.6 mm sieves are approximately 70%, 26.5%, 58–61%, and 34%, respectively, the mixture exhibits superior overall skid-resistance performance. Based on the evaluation results of the International Friction Index (IFI), the optimized gradation shows a more stable level of skid resistance under wet and slippery conditions. These findings provide quantitative evidence and engineering guidance for the skid-resistance-oriented gradation design of epoxy–asphalt mixtures used in steel bridge deck pavements in hot and humid regions. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.3390/polym18091088
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 25
        StartPage: 1088
    Subjects:
      – SubjectFull: Skid resistance
        Type: general
      – SubjectFull: Particle size distribution
        Type: general
      – SubjectFull: Orthogonal arrays
        Type: general
      – SubjectFull: Asphalt pavements
        Type: general
      – SubjectFull: Surface texture
        Type: general
      – SubjectFull: Tropical climate
        Type: general
    Titles:
      – TitleFull: Gradation Design of Epoxy–Asphalt Mixtures for Steel Bridge Deck Pavements Optimized for Skid Resistance in Hot and Humid Climates.
        Type: main
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          Name:
            NameFull: Du, Peidong
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            NameFull: He, Qinghua
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            NameFull: Han, Zhenqiang
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            NameFull: Zhang, Qiang
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            NameFull: Xiong, Chuan
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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              Value: 18
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