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Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures.

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Title: Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures.
Authors: Soohyok Im1 sooim@huskers.unl.edu, Yong-Rak Kim2 ykim3@khu.ac.kr, Hoki Ban3 hban2@unlnotes.unl.edu
Source: Journal of Testing & Evaluation. Mar2013, Vol. 41 Issue 2, p257-268. 12p.
Subjects: Asphalt pavements, Roads, Finite element method, Viscoelasticity, Pavements
Abstract: Cracking in asphaltic pavement layers causes primary failure of the roadway structure, and the fracture resistance and characteristics of asphalt mixtures significantly influence the service life of asphaltic roadways. A better understanding of the fracture process is considered a necessary step to the proper development of design-analysis procedures for asphaltic mixtures and pavement structures. However, such effort involves many challenges because of the complex nature of asphaltic materials. In this study, experiments were conducted using uniaxial compressive specimens to characterize the linear viscoelastic properties and semi-circular bending (SCB) specimens to characterize fracture behavior of a typical dense-graded asphalt paving mixture subjected to various loading rates and at different temperatures. The SCB fracture test was also incorporated with a digital image correlation (DIC) system and finite-element model simulations including material viscoelasticity and cohesive-zone fracture to effectively capture local fracture processes and resulting fracture properties. The test results and model simulations clearly demonstrate that: (1) the rate- and temperature-dependent fracture characteristics need to be identified at the local fracture process zone, and (2) the rate- and temperature-dependent fracture properties are necessary ha the structural design of asphaltic pavements with which a wide range of strain rates and service temperatures is usually associated. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Testing & Evaluation is the property of ASTM International 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: 88776479
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  Label: Title
  Group: Ti
  Data: Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures.
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  Data: <searchLink fieldCode="AR" term="%22Soohyok+Im%22">Soohyok Im</searchLink><relatesTo>1</relatesTo><i> sooim@huskers.unl.edu</i><br /><searchLink fieldCode="AR" term="%22Yong-Rak+Kim%22">Yong-Rak Kim</searchLink><relatesTo>2</relatesTo><i> ykim3@khu.ac.kr</i><br /><searchLink fieldCode="AR" term="%22Hoki+Ban%22">Hoki Ban</searchLink><relatesTo>3</relatesTo><i> hban2@unlnotes.unl.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Testing+%26+Evaluation%22">Journal of Testing & Evaluation</searchLink>. Mar2013, Vol. 41 Issue 2, p257-268. 12p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Asphalt+pavements%22">Asphalt pavements</searchLink><br /><searchLink fieldCode="DE" term="%22Roads%22">Roads</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Viscoelasticity%22">Viscoelasticity</searchLink><br /><searchLink fieldCode="DE" term="%22Pavements%22">Pavements</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Cracking in asphaltic pavement layers causes primary failure of the roadway structure, and the fracture resistance and characteristics of asphalt mixtures significantly influence the service life of asphaltic roadways. A better understanding of the fracture process is considered a necessary step to the proper development of design-analysis procedures for asphaltic mixtures and pavement structures. However, such effort involves many challenges because of the complex nature of asphaltic materials. In this study, experiments were conducted using uniaxial compressive specimens to characterize the linear viscoelastic properties and semi-circular bending (SCB) specimens to characterize fracture behavior of a typical dense-graded asphalt paving mixture subjected to various loading rates and at different temperatures. The SCB fracture test was also incorporated with a digital image correlation (DIC) system and finite-element model simulations including material viscoelasticity and cohesive-zone fracture to effectively capture local fracture processes and resulting fracture properties. The test results and model simulations clearly demonstrate that: (1) the rate- and temperature-dependent fracture characteristics need to be identified at the local fracture process zone, and (2) the rate- and temperature-dependent fracture properties are necessary ha the structural design of asphaltic pavements with which a wide range of strain rates and service temperatures is usually associated. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Testing & Evaluation is the property of ASTM International 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: 10.1520/JTE20120174
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 257
    Subjects:
      – SubjectFull: Asphalt pavements
        Type: general
      – SubjectFull: Roads
        Type: general
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Viscoelasticity
        Type: general
      – SubjectFull: Pavements
        Type: general
    Titles:
      – TitleFull: Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures.
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            NameFull: Soohyok Im
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            NameFull: Yong-Rak Kim
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            NameFull: Hoki Ban
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            – D: 01
              M: 03
              Text: Mar2013
              Type: published
              Y: 2013
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              Value: 41
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