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Study of thermal conductivity of constituent materials for electrically heated bridge decks.

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Title: Study of thermal conductivity of constituent materials for electrically heated bridge decks.
Authors: Luo, Yong1,2 (AUTHOR) luoyong@student.usm.my, Yussof, Mustafasanie M.1,2 (AUTHOR) cemustafa@usm.my, Zhang, Liyao3 (AUTHOR) 1289991932@qq.com
Source: Construction & Building Materials. Nov2024, Vol. 453, pN.PAG-N.PAG. 1p.
Subjects: High strength concrete, Bridge floors, Thermal conductivity, Snowmelt, Heat conduction
Abstract: Due to the dual requirements of its basic road use function and snow melting and deicing function, the electrically heated bridge deck inevitably requires the constituent materials of the bridge deck pavement to possess both good mechanical strength and thermal conductivity simultaneously. This paper intends to systematically analyze the mechanical strength and thermal conductivity of pavement materials such as ordinary road concrete, high thermal conductivity steel fiber concrete, and low thermal conductivity bamboo fiber concrete under multiple mix proportion schemes through indoor concrete strength tests and material thermal conductivity tests. Thus, three mix proportion schemes of pavement concrete with high mechanical strength and thermal conductivity suitable for their respective requirements are selected, and the structure layer of the electrically heated bridge deck is constructed. The results show that compared with ordinary road concrete, the thermal conductivity of steel fiber concrete has increased by 28.3 %, with a thermal conduction influence value of 1.28, further accelerating heat conduction. The thermal conductivity of bamboo fiber concrete has decreased by 31.9 %, with a thermal conduction influence value of 0.68, further blocking heat conduction, achieving directional conduction. In comprehensive comparison, selecting pavement steel fiber concrete and pavement bamboo fiber concrete as the thermal conductive surface layer and heat insulation interlayer pavement materials of the electrically heated bridge deck respectively is more ideal. This lays a solid foundation and provides practical evidence for achieving directional heat conduction and low-energy precise heating of the electrically heated bridge deck. • We have established a system of thermal conductivity of different types of concrete. • We built the structural composition framework of electrically heated bridge deck. • We realized the directional conduction function of the electrically heated bridge deck. [ABSTRACT FROM AUTHOR]
Copyright of Construction & Building Materials 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: 180885573
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  Data: Study of thermal conductivity of constituent materials for electrically heated bridge decks.
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  Data: <searchLink fieldCode="AR" term="%22Luo%2C+Yong%22">Luo, Yong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> luoyong@student.usm.my</i><br /><searchLink fieldCode="AR" term="%22Yussof%2C+Mustafasanie+M%2E%22">Yussof, Mustafasanie M.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> cemustafa@usm.my</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Liyao%22">Zhang, Liyao</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> 1289991932@qq.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Construction+%26+Building+Materials%22">Construction & Building Materials</searchLink>. Nov2024, Vol. 453, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22High+strength+concrete%22">High strength concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Bridge+floors%22">Bridge floors</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Snowmelt%22">Snowmelt</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+conduction%22">Heat conduction</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Due to the dual requirements of its basic road use function and snow melting and deicing function, the electrically heated bridge deck inevitably requires the constituent materials of the bridge deck pavement to possess both good mechanical strength and thermal conductivity simultaneously. This paper intends to systematically analyze the mechanical strength and thermal conductivity of pavement materials such as ordinary road concrete, high thermal conductivity steel fiber concrete, and low thermal conductivity bamboo fiber concrete under multiple mix proportion schemes through indoor concrete strength tests and material thermal conductivity tests. Thus, three mix proportion schemes of pavement concrete with high mechanical strength and thermal conductivity suitable for their respective requirements are selected, and the structure layer of the electrically heated bridge deck is constructed. The results show that compared with ordinary road concrete, the thermal conductivity of steel fiber concrete has increased by 28.3 %, with a thermal conduction influence value of 1.28, further accelerating heat conduction. The thermal conductivity of bamboo fiber concrete has decreased by 31.9 %, with a thermal conduction influence value of 0.68, further blocking heat conduction, achieving directional conduction. In comprehensive comparison, selecting pavement steel fiber concrete and pavement bamboo fiber concrete as the thermal conductive surface layer and heat insulation interlayer pavement materials of the electrically heated bridge deck respectively is more ideal. This lays a solid foundation and provides practical evidence for achieving directional heat conduction and low-energy precise heating of the electrically heated bridge deck. • We have established a system of thermal conductivity of different types of concrete. • We built the structural composition framework of electrically heated bridge deck. • We realized the directional conduction function of the electrically heated bridge deck. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Construction & Building Materials 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:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.conbuildmat.2024.139122
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
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      – SubjectFull: High strength concrete
        Type: general
      – SubjectFull: Bridge floors
        Type: general
      – SubjectFull: Thermal conductivity
        Type: general
      – SubjectFull: Snowmelt
        Type: general
      – SubjectFull: Heat conduction
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      – TitleFull: Study of thermal conductivity of constituent materials for electrically heated bridge decks.
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            NameFull: Luo, Yong
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            NameFull: Yussof, Mustafasanie M.
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            NameFull: Zhang, Liyao
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            – D: 29
              M: 11
              Text: Nov2024
              Type: published
              Y: 2024
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              Value: 453
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