Supplementary Cementitious Materials in Building Blocks—Diagnosing Opportunities in Sub-Saharan Africa
نویسندگان
چکیده
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 increasingly produced ordinary Portland cement (PC), which has high footprint. Using alternative Supplementary Cementitious Materials (SCMs) for block production might reduce the footprint price. The purpose to assess level of information SCM use in blocks SSA this Diagnosing improvement potential as part an Opportunity Study. Results from scoping review show that aggregated on SCMs quantities available limited. theoretical cassava peel ash, rice husk corn cob volcanic ash calcined clays, indicates could represent yearly value approximately USD 400 million, transferred buying local production. save 1.7 million tonnes CO2 per year create some 50,000 jobs. About 5% PC used substituted, indicating that, addition SCMs, other solutions needed secure sustainable blocks.
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ژورنال
عنوان ژورنال: Sustainability
سال: 2023
ISSN: ['2071-1050']
DOI: https://doi.org/10.3390/su15075822