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Supplementary Cementitious Materials in Building Blocks—Diagnosing Opportunities in Sub-Saharan Africa

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Názov: Supplementary Cementitious Materials in Building Blocks—Diagnosing Opportunities in Sub-Saharan Africa
Autori: Isaksson, Raine, Rosvall, Max, Baba Ahmadi, Arezou, 1985, Buregyeya, Apollo, Hazarika, Amrita, 1993, Marangu, Joseph Mwiti, Olonade, Kolawole, Ramanathan, Swaminathan, Rucukye, Anthony, Valentini, Luca
Zdroj: Sustainability (Switzerland). 15(7)
Predmety: block production, sub-Saharan Africa, sustainable housing, alternative binders, diagnosing potential, supplementary cementitious material, sustainability opportunity study
Popis: Sustainable building should at least be affordable and carbon neutral. Sub-Saharan Africa (SSA) is a region struggling with housing affordability. Residential buildings are often constructed using block-based materials. These are increasingly produced using ordinary Portland cement (PC), which has a high carbon footprint. Using alternative Supplementary Cementitious Materials (SCMs) for block production might reduce the footprint and price. The purpose is to assess the level of information for SCM use in blocks in SSA and to use this information for Diagnosing the improvement potential as part of an Opportunity Study. Results from the scoping review show that aggregated information on SCMs and the quantities available is limited. Diagnosing the theoretical improvement potential in using cassava peel ash, rice husk ash, corn cob ash, volcanic ash and calcined clays, indicates that SCMs could represent a yearly value of approximately USD 400 million, which could be transferred from buying cement to local production. The use of SCMs could save 1.7 million tonnes of CO2 per year and create some 50,000 jobs. About 5% of the PC used for block production could be substituted, indicating that, in addition to using SCMs, other solutions are needed to secure production of sustainable blocks.
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Prístupová URL adresa: https://research.chalmers.se/publication/535561
https://research.chalmers.se/publication/535561/file/535561_Fulltext.pdf
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  Data: Supplementary Cementitious Materials in Building Blocks—Diagnosing Opportunities in Sub-Saharan Africa
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  Data: <searchLink fieldCode="AR" term="%22Isaksson%2C+Raine%22">Isaksson, Raine</searchLink><br /><searchLink fieldCode="AR" term="%22Rosvall%2C+Max%22">Rosvall, Max</searchLink><br /><searchLink fieldCode="AR" term="%22Baba+Ahmadi%2C+Arezou%22">Baba Ahmadi, Arezou</searchLink>, 1985<br /><searchLink fieldCode="AR" term="%22Buregyeya%2C+Apollo%22">Buregyeya, Apollo</searchLink><br /><searchLink fieldCode="AR" term="%22Hazarika%2C+Amrita%22">Hazarika, Amrita</searchLink>, 1993<br /><searchLink fieldCode="AR" term="%22Marangu%2C+Joseph+Mwiti%22">Marangu, Joseph Mwiti</searchLink><br /><searchLink fieldCode="AR" term="%22Olonade%2C+Kolawole%22">Olonade, Kolawole</searchLink><br /><searchLink fieldCode="AR" term="%22Ramanathan%2C+Swaminathan%22">Ramanathan, Swaminathan</searchLink><br /><searchLink fieldCode="AR" term="%22Rucukye%2C+Anthony%22">Rucukye, Anthony</searchLink><br /><searchLink fieldCode="AR" term="%22Valentini%2C+Luca%22">Valentini, Luca</searchLink>
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  Label: Source
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  Data: <i>Sustainability (Switzerland)</i>. 15(7)
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  Data: <searchLink fieldCode="DE" term="%22block+production%22">block production</searchLink><br /><searchLink fieldCode="DE" term="%22sub-Saharan+Africa%22">sub-Saharan Africa</searchLink><br /><searchLink fieldCode="DE" term="%22sustainable+housing%22">sustainable housing</searchLink><br /><searchLink fieldCode="DE" term="%22alternative+binders%22">alternative binders</searchLink><br /><searchLink fieldCode="DE" term="%22diagnosing+potential%22">diagnosing potential</searchLink><br /><searchLink fieldCode="DE" term="%22supplementary+cementitious+material%22">supplementary cementitious material</searchLink><br /><searchLink fieldCode="DE" term="%22sustainability+opportunity+study%22">sustainability opportunity study</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: Sustainable building should at least be affordable and carbon neutral. Sub-Saharan Africa (SSA) is a region struggling with housing affordability. Residential buildings are often constructed using block-based materials. These are increasingly produced using ordinary Portland cement (PC), which has a high carbon footprint. Using alternative Supplementary Cementitious Materials (SCMs) for block production might reduce the footprint and price. The purpose is to assess the level of information for SCM use in blocks in SSA and to use this information for Diagnosing the improvement potential as part of an Opportunity Study. Results from the scoping review show that aggregated information on SCMs and the quantities available is limited. Diagnosing the theoretical improvement potential in using cassava peel ash, rice husk ash, corn cob ash, volcanic ash and calcined clays, indicates that SCMs could represent a yearly value of approximately USD 400 million, which could be transferred from buying cement to local production. The use of SCMs could save 1.7 million tonnes of CO2 per year and create some 50,000 jobs. About 5% of the PC used for block production could be substituted, indicating that, in addition to using SCMs, other solutions are needed to secure production of sustainable blocks.
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  Data: electronic
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        Value: 10.3390/su15075822
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      – Text: English
    Subjects:
      – SubjectFull: block production
        Type: general
      – SubjectFull: sub-Saharan Africa
        Type: general
      – SubjectFull: sustainable housing
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      – SubjectFull: diagnosing potential
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      – SubjectFull: supplementary cementitious material
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      – SubjectFull: sustainability opportunity study
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      – TitleFull: Supplementary Cementitious Materials in Building Blocks—Diagnosing Opportunities in Sub-Saharan Africa
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              Type: published
              Y: 2023
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