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Experimental study on mechanical and thermal insulation properties of a geopolymer‐based fireproof sandwich panel.

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Title: Experimental study on mechanical and thermal insulation properties of a geopolymer‐based fireproof sandwich panel.
Authors: Pei, Rui1 (AUTHOR), Hua, Luqing2 (AUTHOR), Zhao, Hu3 (AUTHOR), Wang, Xin2 (AUTHOR) xinwang@seu.edu.cn, Li, Shiyang2 (AUTHOR), Wu, Zhishen2 (AUTHOR)
Source: International Journal of Applied Ceramic Technology. Mar/Apr2025, Vol. 22 Issue 2, p1-22. 22p.
Subjects: Thermal conductivity, Core materials, Thermal insulation, Thermal properties, Mineral wool, Sandwich construction (Materials), Fire resistant polymers
Abstract: This work created a fireproof sandwich structure in which the face sheets were made of expanded vermiculite and expanded perlite‐filled geopolymer composites and embedded basalt fiber mats and the core material was rock wool in designing the lightweight and cost‐effective fire‐resistant structure for steel bridges with excellent retardant and heat‐insulating performance. The effects of adding 5%, 10%, 15%, and 20% expanded vermiculite and expanded perlite to the geopolymer on mechanical properties and the thermal conductivity were investigated to obtain the optimized material mixtures for preparing the face‐sheets material of the sandwich panel. Then, the fireproof sandwich structures were fabricated and exposed to 800°C for 3 h to study the structural integrity, backfire side temperature, and mass loss ratio. The results indicated that adding 10 wt% expanded vermiculite and 10 wt% expanded perlite to the geopolymer achieved the retention of compressive strength of 66.5% after being exposed to 800°C, and the geopolymer mixtures showed a low thermal conductivity of 0.1942 W/(mK). The TOPSIS evaluation analysis reveals that the proposed fireproof sandwich panel had the highest integrated performance considering the structural weight, insulation properties, and cost. The findings of this work may provide some insights into fireproof and insulating applications in bridge engineering. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Applied Ceramic Technology 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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DbLabel: Engineering Source
An: 183976993
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Experimental study on mechanical and thermal insulation properties of a geopolymer‐based fireproof sandwich panel.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Pei%2C+Rui%22">Pei, Rui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hua%2C+Luqing%22">Hua, Luqing</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Hu%22">Zhao, Hu</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Xin%22">Wang, Xin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> xinwang@seu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Shiyang%22">Li, Shiyang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Zhishen%22">Wu, Zhishen</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Applied+Ceramic+Technology%22">International Journal of Applied Ceramic Technology</searchLink>. Mar/Apr2025, Vol. 22 Issue 2, p1-22. 22p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Core+materials%22">Core materials</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+insulation%22">Thermal insulation</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+properties%22">Thermal properties</searchLink><br /><searchLink fieldCode="DE" term="%22Mineral+wool%22">Mineral wool</searchLink><br /><searchLink fieldCode="DE" term="%22Sandwich+construction+%28Materials%29%22">Sandwich construction (Materials)</searchLink><br /><searchLink fieldCode="DE" term="%22Fire+resistant+polymers%22">Fire resistant polymers</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This work created a fireproof sandwich structure in which the face sheets were made of expanded vermiculite and expanded perlite‐filled geopolymer composites and embedded basalt fiber mats and the core material was rock wool in designing the lightweight and cost‐effective fire‐resistant structure for steel bridges with excellent retardant and heat‐insulating performance. The effects of adding 5%, 10%, 15%, and 20% expanded vermiculite and expanded perlite to the geopolymer on mechanical properties and the thermal conductivity were investigated to obtain the optimized material mixtures for preparing the face‐sheets material of the sandwich panel. Then, the fireproof sandwich structures were fabricated and exposed to 800°C for 3 h to study the structural integrity, backfire side temperature, and mass loss ratio. The results indicated that adding 10 wt% expanded vermiculite and 10 wt% expanded perlite to the geopolymer achieved the retention of compressive strength of 66.5% after being exposed to 800°C, and the geopolymer mixtures showed a low thermal conductivity of 0.1942 W/(mK). The TOPSIS evaluation analysis reveals that the proposed fireproof sandwich panel had the highest integrated performance considering the structural weight, insulation properties, and cost. The findings of this work may provide some insights into fireproof and insulating applications in bridge engineering. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Applied Ceramic Technology 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:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1111/ijac.14966
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 22
        StartPage: 1
    Subjects:
      – SubjectFull: Thermal conductivity
        Type: general
      – SubjectFull: Core materials
        Type: general
      – SubjectFull: Thermal insulation
        Type: general
      – SubjectFull: Thermal properties
        Type: general
      – SubjectFull: Mineral wool
        Type: general
      – SubjectFull: Sandwich construction (Materials)
        Type: general
      – SubjectFull: Fire resistant polymers
        Type: general
    Titles:
      – TitleFull: Experimental study on mechanical and thermal insulation properties of a geopolymer‐based fireproof sandwich panel.
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          Name:
            NameFull: Pei, Rui
      – PersonEntity:
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            NameFull: Hua, Luqing
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            NameFull: Zhao, Hu
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            NameFull: Wang, Xin
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            NameFull: Li, Shiyang
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            NameFull: Wu, Zhishen
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            – D: 01
              M: 03
              Text: Mar/Apr2025
              Type: published
              Y: 2025
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              Value: 1546542X
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              Value: 22
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            – TitleFull: International Journal of Applied Ceramic Technology
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