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New Building Envelope Materials for Energy Saving and Sustainability.

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Title: New Building Envelope Materials for Energy Saving and Sustainability.
Authors: Cherif, Amel Soukaina1,2 (AUTHOR) amelsoukeina.cherif@enau.ucar.tn, Skander-Mustapha, Sondes1,3 (AUTHOR), Slama-Belkhodja, Ilhem3 (AUTHOR), Binwal, Shikha (AUTHOR) sbinwal@wiley.com
Source: Journal of Engineering (2314-4912). 6/27/2026, Vol. 2026, p1-19. 19p.
Subjects: Limestone, Construction materials, Building envelopes, Energy management, Sustainability, Energy consumption, Building performance, Wetting
Geographic Terms: Southern Europe
Abstract: The hygrothermal performance of building envelopes critically influences indoor comfort and energy demand, especially in warm climates where air conditioning represents a major energy use. This study evaluates a composite earth‐based brick incorporating crushed limestone aggregates, lightly stabilized with 8% cement and optimized for Mediterranean contexts. Laboratory and in situ tests demonstrate that limestone substitution improves compressive strength and water resistance, with optimal performance near 38% substitution. Though thermal resistance slightly decreases with substitution, overall hygrothermal behavior remains favorable. Water sorption–desorption isotherms and moisture buffer capacity (MBC) were examined under controlled conditions, with MBC expressed volumetrically (kilograms per cubic meter) rather than the standardized moisture buffer value. Sorption–desorption tests revealed that increasing limestone content reduces moisture buffering but remains within acceptable ranges. A peak MBC was observed at 10% limestone substitution, linked to microstructural rearrangement, enhancing porosity and moisture dynamics. Higher limestone content diminished MBC due to decreased microporosity and surface area, despite increased total porosity. Dynamic energy simulations, validated by experiments, indicate indoor temperatures can be reduced by up to 4°C during peak summer, with annual energy savings of 68 kWh/m2. An integrated environmental and economic assessment estimates a CO2 reduction of 9.9 kg/year and a simple payback period of 14.7 years based on electricity prices in Tunisia. While benefits per unit are moderate, their cumulative impact at the building scale is notable. This work bridges material science, hygrothermal performance, and sustainable evaluation, supporting further life cycle analysis to guide eco‐efficient construction. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Engineering (2314-4912) 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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Header DbId: egs
DbLabel: Engineering Source
An: 194947199
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: New Building Envelope Materials for Energy Saving and Sustainability.
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  Data: <searchLink fieldCode="AR" term="%22Cherif%2C+Amel+Soukaina%22">Cherif, Amel Soukaina</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> amelsoukeina.cherif@enau.ucar.tn</i><br /><searchLink fieldCode="AR" term="%22Skander-Mustapha%2C+Sondes%22">Skander-Mustapha, Sondes</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Slama-Belkhodja%2C+Ilhem%22">Slama-Belkhodja, Ilhem</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Binwal%2C+Shikha%22">Binwal, Shikha</searchLink> (AUTHOR)<i> sbinwal@wiley.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Engineering+%282314-4912%29%22">Journal of Engineering (2314-4912)</searchLink>. 6/27/2026, Vol. 2026, p1-19. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Limestone%22">Limestone</searchLink><br /><searchLink fieldCode="DE" term="%22Construction+materials%22">Construction materials</searchLink><br /><searchLink fieldCode="DE" term="%22Building+envelopes%22">Building envelopes</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+management%22">Energy management</searchLink><br /><searchLink fieldCode="DE" term="%22Sustainability%22">Sustainability</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+consumption%22">Energy consumption</searchLink><br /><searchLink fieldCode="DE" term="%22Building+performance%22">Building performance</searchLink><br /><searchLink fieldCode="DE" term="%22Wetting%22">Wetting</searchLink>
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  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Southern+Europe%22">Southern Europe</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The hygrothermal performance of building envelopes critically influences indoor comfort and energy demand, especially in warm climates where air conditioning represents a major energy use. This study evaluates a composite earth‐based brick incorporating crushed limestone aggregates, lightly stabilized with 8% cement and optimized for Mediterranean contexts. Laboratory and in situ tests demonstrate that limestone substitution improves compressive strength and water resistance, with optimal performance near 38% substitution. Though thermal resistance slightly decreases with substitution, overall hygrothermal behavior remains favorable. Water sorption–desorption isotherms and moisture buffer capacity (MBC) were examined under controlled conditions, with MBC expressed volumetrically (kilograms per cubic meter) rather than the standardized moisture buffer value. Sorption–desorption tests revealed that increasing limestone content reduces moisture buffering but remains within acceptable ranges. A peak MBC was observed at 10% limestone substitution, linked to microstructural rearrangement, enhancing porosity and moisture dynamics. Higher limestone content diminished MBC due to decreased microporosity and surface area, despite increased total porosity. Dynamic energy simulations, validated by experiments, indicate indoor temperatures can be reduced by up to 4°C during peak summer, with annual energy savings of 68 kWh/m2. An integrated environmental and economic assessment estimates a CO2 reduction of 9.9 kg/year and a simple payback period of 14.7 years based on electricity prices in Tunisia. While benefits per unit are moderate, their cumulative impact at the building scale is notable. This work bridges material science, hygrothermal performance, and sustainable evaluation, supporting further life cycle analysis to guide eco‐efficient construction. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Engineering (2314-4912) 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: 10.1155/je/1007625
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 19
        StartPage: 1
    Subjects:
      – SubjectFull: Limestone
        Type: general
      – SubjectFull: Construction materials
        Type: general
      – SubjectFull: Building envelopes
        Type: general
      – SubjectFull: Energy management
        Type: general
      – SubjectFull: Sustainability
        Type: general
      – SubjectFull: Energy consumption
        Type: general
      – SubjectFull: Building performance
        Type: general
      – SubjectFull: Wetting
        Type: general
      – SubjectFull: Southern Europe
        Type: general
    Titles:
      – TitleFull: New Building Envelope Materials for Energy Saving and Sustainability.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Cherif, Amel Soukaina
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          Name:
            NameFull: Skander-Mustapha, Sondes
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            NameFull: Slama-Belkhodja, Ilhem
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            NameFull: Binwal, Shikha
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          Dates:
            – D: 27
              M: 06
              Text: 6/27/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 23144904
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            – Type: volume
              Value: 2026
          Titles:
            – TitleFull: Journal of Engineering (2314-4912)
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