Crack Resistance in Asphalt Mixtures Reinforced With Glass and Polyester Fibers: A Fracture Mechanics and Statistical Evaluation.

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Title: Crack Resistance in Asphalt Mixtures Reinforced With Glass and Polyester Fibers: A Fracture Mechanics and Statistical Evaluation.
Authors: Esmaeili, Niloofar1 (AUTHOR), Samadzad, Mahdi1 (AUTHOR), Alavi, Mohammad Zia1 (AUTHOR) zia.alavi@ut.ac.ir, Mangiafico, Salvatore2 (AUTHOR), Sauzéat, Cédric2 (AUTHOR)
Source: Fatigue & Fracture of Engineering Materials & Structures. Jul2026, Vol. 49 Issue 7, p2793-2809. 17p.
Subjects: Polyester fibers, Glass fibers, Temperature effect, Asphalt, Fracture mechanics, R-curves, Fibrous composites
Abstract: This study investigates the fracture resistance of polyester (PE) and glass (G) fiber‐reinforced asphalt composite through a mechanistic and statistical evaluation using the semicircular bending (SCB) test under pure Mode I and mixed‐mode I/II loading. Nine fiber‐reinforced mixtures were prepared with two fiber lengths (12 and 18 mm) and contents (PE: 0.25% and 0.40%; G: 0.12% and 0.25%) and tested at −12°C and 25°C with three notch lengths (10, 20, and 30 mm). The results showed that PE fibers consistently enhanced fracture energy, post‐peak ductility, and crack‐bridging capacity across temperatures, particularly at 25°C. Conversely, glass fibers improved peak load and stiffness primarily at low temperature and lower notch severities. Statistical analyses confirmed significant interactions between fiber type, temperature, and notch geometry. The findings demonstrate that PE fibers promote ductile fracture behavior over a wider range of thermomechanical conditions, while glass fibers are more effective in stiffness‐dominated, brittle fracture regimes. Summary: Polyester fibers enhance post‐peak ductility over a wide temperature range.Glass fibers increase stiffness primarily under low‐temperature fracture.Mixed‐mode loading reveals realistic crack evolution mechanisms.Fiber effectiveness is governed by temperature and crack severity. [ABSTRACT FROM AUTHOR]
Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell 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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  Data: Crack Resistance in Asphalt Mixtures Reinforced With Glass and Polyester Fibers: A Fracture Mechanics and Statistical Evaluation.
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  Data: <searchLink fieldCode="JN" term="%22Fatigue+%26+Fracture+of+Engineering+Materials+%26+Structures%22">Fatigue & Fracture of Engineering Materials & Structures</searchLink>. Jul2026, Vol. 49 Issue 7, p2793-2809. 17p.
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  Data: <searchLink fieldCode="DE" term="%22Polyester+fibers%22">Polyester fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Glass+fibers%22">Glass fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink><br /><searchLink fieldCode="DE" term="%22Asphalt%22">Asphalt</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+mechanics%22">Fracture mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22R-curves%22">R-curves</searchLink><br /><searchLink fieldCode="DE" term="%22Fibrous+composites%22">Fibrous composites</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study investigates the fracture resistance of polyester (PE) and glass (G) fiber‐reinforced asphalt composite through a mechanistic and statistical evaluation using the semicircular bending (SCB) test under pure Mode I and mixed‐mode I/II loading. Nine fiber‐reinforced mixtures were prepared with two fiber lengths (12 and 18 mm) and contents (PE: 0.25% and 0.40%; G: 0.12% and 0.25%) and tested at −12°C and 25°C with three notch lengths (10, 20, and 30 mm). The results showed that PE fibers consistently enhanced fracture energy, post‐peak ductility, and crack‐bridging capacity across temperatures, particularly at 25°C. Conversely, glass fibers improved peak load and stiffness primarily at low temperature and lower notch severities. Statistical analyses confirmed significant interactions between fiber type, temperature, and notch geometry. The findings demonstrate that PE fibers promote ductile fracture behavior over a wider range of thermomechanical conditions, while glass fibers are more effective in stiffness‐dominated, brittle fracture regimes. Summary: Polyester fibers enhance post‐peak ductility over a wide temperature range.Glass fibers increase stiffness primarily under low‐temperature fracture.Mixed‐mode loading reveals realistic crack evolution mechanisms.Fiber effectiveness is governed by temperature and crack severity. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell 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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      – Type: doi
        Value: 10.1111/ffe.70273
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 17
        StartPage: 2793
    Subjects:
      – SubjectFull: Polyester fibers
        Type: general
      – SubjectFull: Glass fibers
        Type: general
      – SubjectFull: Temperature effect
        Type: general
      – SubjectFull: Asphalt
        Type: general
      – SubjectFull: Fracture mechanics
        Type: general
      – SubjectFull: R-curves
        Type: general
      – SubjectFull: Fibrous composites
        Type: general
    Titles:
      – TitleFull: Crack Resistance in Asphalt Mixtures Reinforced With Glass and Polyester Fibers: A Fracture Mechanics and Statistical Evaluation.
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          Name:
            NameFull: Esmaeili, Niloofar
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            NameFull: Samadzad, Mahdi
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            NameFull: Alavi, Mohammad Zia
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            NameFull: Mangiafico, Salvatore
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            NameFull: Sauzéat, Cédric
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            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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              Value: 49
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              Value: 7
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            – TitleFull: Fatigue & Fracture of Engineering Materials & Structures
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