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Investigation of high-performance geopolymer concrete-filled double-skin columns under combined loading conditions.

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Title: Investigation of high-performance geopolymer concrete-filled double-skin columns under combined loading conditions.
Authors: Alameri, Mohammad1 (AUTHOR) Mohammad.alameri@adelaide.edu.au, Mohamed Ali, M.S.1 (AUTHOR), Sheikh, Abdul1 (AUTHOR), Elchalakani, Mohamed2 (AUTHOR)
Source: Journal of Constructional Steel Research. Jun2025, Vol. 229, pN.PAG-N.PAG. 1p.
Subjects: Columns, Steel tubes, Finite element method, Axial loads, Failure mode & effects analysis, Concrete-filled tubes
Abstract: This study investigated the high-performance geopolymer concrete-filled double-skin stainless steel tube (HPGC-FDST) columns under concentric, eccentric, and flexural loading conditions. For this, a rational orthogonal array approach was adopted to develop high-performance geopolymer concrete (HPGC) in a previous study. Then, the optimum HPGC mix design was combined with stainless steel tubes, providing significant advantages in harsh marine environments in resisting corrosion and chemical deterioration. Four short columns having a height of 900 mm were tested under different eccentricities to depth ratios (e/D) (0, 0.06, 0.267, and 0.467), and a beam having a length of 1200 mm was also subjected to three-point flexural bending to complete the axial-moment interaction diagram experimentally. Additionally, finite element modelling (FEM) was conducted to simulate the fabricated columns in the experimental program. The results showed an agreement between the numerical and experimental behaviour of the columns. Moreover, the interaction diagram was plotted analytically to assess the capabilities of existing models and accurately predict the results. The experimental findings revealed that the presence of the stainless-steel tubes, which encase the HPGC, improves the ductility of the columns, even though there was a reduction in axial load capacity with increasing the e/D. Local buckling failure was observed at the mid-height of all columns. FEM simulations showed high correlation with experimental outcomes, providing valuable validation for future structural predictions of HPGC-FDST columns. • This study investigates HPGC-FDST columns, combining geopolymer concrete and stainless steel for enhanced durability. • This combination, along with hybrid steel fibres, improves the ductility of structural members. • FEM validated experimental results, accurately predicting deflection and failure modes. • The developed empirical axial-moment interaction diagram showed strong agreement experimental results. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Constructional Steel Research 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: 184385926
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Investigation of high-performance geopolymer concrete-filled double-skin columns under combined loading conditions.
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  Data: <searchLink fieldCode="AR" term="%22Alameri%2C+Mohammad%22">Alameri, Mohammad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Mohammad.alameri@adelaide.edu.au</i><br /><searchLink fieldCode="AR" term="%22Mohamed+Ali%2C+M%2ES%2E%22">Mohamed Ali, M.S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sheikh%2C+Abdul%22">Sheikh, Abdul</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Elchalakani%2C+Mohamed%22">Elchalakani, Mohamed</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Constructional+Steel+Research%22">Journal of Constructional Steel Research</searchLink>. Jun2025, Vol. 229, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Columns%22">Columns</searchLink><br /><searchLink fieldCode="DE" term="%22Steel+tubes%22">Steel tubes</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Axial+loads%22">Axial loads</searchLink><br /><searchLink fieldCode="DE" term="%22Failure+mode+%26+effects+analysis%22">Failure mode & effects analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete-filled+tubes%22">Concrete-filled tubes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study investigated the high-performance geopolymer concrete-filled double-skin stainless steel tube (HPGC-FDST) columns under concentric, eccentric, and flexural loading conditions. For this, a rational orthogonal array approach was adopted to develop high-performance geopolymer concrete (HPGC) in a previous study. Then, the optimum HPGC mix design was combined with stainless steel tubes, providing significant advantages in harsh marine environments in resisting corrosion and chemical deterioration. Four short columns having a height of 900 mm were tested under different eccentricities to depth ratios (e/D) (0, 0.06, 0.267, and 0.467), and a beam having a length of 1200 mm was also subjected to three-point flexural bending to complete the axial-moment interaction diagram experimentally. Additionally, finite element modelling (FEM) was conducted to simulate the fabricated columns in the experimental program. The results showed an agreement between the numerical and experimental behaviour of the columns. Moreover, the interaction diagram was plotted analytically to assess the capabilities of existing models and accurately predict the results. The experimental findings revealed that the presence of the stainless-steel tubes, which encase the HPGC, improves the ductility of the columns, even though there was a reduction in axial load capacity with increasing the e/D. Local buckling failure was observed at the mid-height of all columns. FEM simulations showed high correlation with experimental outcomes, providing valuable validation for future structural predictions of HPGC-FDST columns. • This study investigates HPGC-FDST columns, combining geopolymer concrete and stainless steel for enhanced durability. • This combination, along with hybrid steel fibres, improves the ductility of structural members. • FEM validated experimental results, accurately predicting deflection and failure modes. • The developed empirical axial-moment interaction diagram showed strong agreement experimental results. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Constructional Steel Research 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.jcsr.2025.109523
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Columns
        Type: general
      – SubjectFull: Steel tubes
        Type: general
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Axial loads
        Type: general
      – SubjectFull: Failure mode & effects analysis
        Type: general
      – SubjectFull: Concrete-filled tubes
        Type: general
    Titles:
      – TitleFull: Investigation of high-performance geopolymer concrete-filled double-skin columns under combined loading conditions.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Alameri, Mohammad
      – PersonEntity:
          Name:
            NameFull: Mohamed Ali, M.S.
      – PersonEntity:
          Name:
            NameFull: Sheikh, Abdul
      – PersonEntity:
          Name:
            NameFull: Elchalakani, Mohamed
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          Dates:
            – D: 01
              M: 06
              Text: Jun2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 0143974X
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            – Type: volume
              Value: 229
          Titles:
            – TitleFull: Journal of Constructional Steel Research
              Type: main
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