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Evaluation of climate effect on resilient modulus of granular subgrade material.

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Title: Evaluation of climate effect on resilient modulus of granular subgrade material.
Authors: Lin, Tianshu1 (AUTHOR), Ishikawa, Tatsuya1,2 (AUTHOR) t-ishika@eng.hokudai.ac.jp, Yang, Jiaqiang1 (AUTHOR), Tokoro, Tetsuya3 (AUTHOR)
Source: Cold Regions Science & Technology. Feb2022, Vol. 194, pN.PAG-N.PAG. 1p.
Subjects: Granular materials, Mechanical behavior of materials, Fatigue life, Material fatigue, Flexible pavements
Abstract: This study examines the effects of freeze-thaw actions and the concurrent seasonal fluctuations in water content, named as climate effect in this study, on the resilient modulus of subgrade materials to evaluate their mechanical behavior in cold regions. A series of suction-controlled resilient modulus tests on subgrade materials with variant freeze-thaw, wheel loads, and water contents conditions were conducted using a newly developed test apparatus. Test results were used to construct a simple model to estimate the climate effect on the resilient modulus by considering the synergistic effects between water content and freeze-thaw. Besides, this study calculated the fatigue life of eight local flexible pavement projects with variant subgrade layer moduli considering climate effect by combining the newly proposed model and long-term in-situ measured data. Results proved that climate-related degradation of the subgrade materials decreases the fatigue life of asphalt pavements in cold regions. • Development of a suction-controlled MR test apparatus for freeze-thawed soils. • Proposal of a model to consider climate effects on resilient modulus of subgrade. • Climate effects on subgrade decrease fatigue life of pavements in cold regions. [ABSTRACT FROM AUTHOR]
Copyright of Cold Regions Science & Technology is the property of Elsevier B.V. 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 154432927
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Evaluation of climate effect on resilient modulus of granular subgrade material.
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  Data: <searchLink fieldCode="AR" term="%22Lin%2C+Tianshu%22">Lin, Tianshu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ishikawa%2C+Tatsuya%22">Ishikawa, Tatsuya</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> t-ishika@eng.hokudai.ac.jp</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Jiaqiang%22">Yang, Jiaqiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tokoro%2C+Tetsuya%22">Tokoro, Tetsuya</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Cold+Regions+Science+%26+Technology%22">Cold Regions Science & Technology</searchLink>. Feb2022, Vol. 194, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Granular+materials%22">Granular materials</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Fatigue+life%22">Fatigue life</searchLink><br /><searchLink fieldCode="DE" term="%22Material+fatigue%22">Material fatigue</searchLink><br /><searchLink fieldCode="DE" term="%22Flexible+pavements%22">Flexible pavements</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study examines the effects of freeze-thaw actions and the concurrent seasonal fluctuations in water content, named as climate effect in this study, on the resilient modulus of subgrade materials to evaluate their mechanical behavior in cold regions. A series of suction-controlled resilient modulus tests on subgrade materials with variant freeze-thaw, wheel loads, and water contents conditions were conducted using a newly developed test apparatus. Test results were used to construct a simple model to estimate the climate effect on the resilient modulus by considering the synergistic effects between water content and freeze-thaw. Besides, this study calculated the fatigue life of eight local flexible pavement projects with variant subgrade layer moduli considering climate effect by combining the newly proposed model and long-term in-situ measured data. Results proved that climate-related degradation of the subgrade materials decreases the fatigue life of asphalt pavements in cold regions. • Development of a suction-controlled MR test apparatus for freeze-thawed soils. • Proposal of a model to consider climate effects on resilient modulus of subgrade. • Climate effects on subgrade decrease fatigue life of pavements in cold regions. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Cold Regions Science & Technology is the property of Elsevier B.V. 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:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.coldregions.2021.103452
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Granular materials
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Fatigue life
        Type: general
      – SubjectFull: Material fatigue
        Type: general
      – SubjectFull: Flexible pavements
        Type: general
    Titles:
      – TitleFull: Evaluation of climate effect on resilient modulus of granular subgrade material.
        Type: main
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      – PersonEntity:
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            NameFull: Lin, Tianshu
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            NameFull: Ishikawa, Tatsuya
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            NameFull: Yang, Jiaqiang
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            NameFull: Tokoro, Tetsuya
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          Dates:
            – D: 01
              M: 02
              Text: Feb2022
              Type: published
              Y: 2022
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              Value: 0165232X
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              Value: 194
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            – TitleFull: Cold Regions Science & Technology
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