Aquatic Weed for Concrete Sustainability

Ordinary Portland cement (OPC) is the primary binder of concrete, accounting for approximately 5% to 7% of greenhouse gas (GHG) and carbon dioxide (CO2) emissions with an annual production rate of more than 4 billion tons. It is critical to reduce the carbon footprint of concrete without sacrificing...

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Bibliographic Details
Published in:Sustainability 2022-12, Vol.14 (23), p.15501
Main Authors: Yehualaw, Mitiku Damtie, Alemu, Mihiret, Hailemariam, Behailu Zerihun, Vo, Duy-Hai, Taffese, Woubishet Zewdu
Format: Article
Language:English
Subjects:
Aggregates
Aquatic plants
Aquatic weeds
Biodiversity
Carbon dioxide
Cement
Concrete
Concrete industry
Density
Durability
Emissions
Fisheries
Floating plants
Greenhouse effect
Greenhouse gases
Materials research
Mechanical properties
Natural resources
Physical properties
Portland cement
Portland cements
Replacement level
Sustainability
Sustainable development
Test methods
Water hyacinths
Water quality
Weeds
Workability
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Summary:Ordinary Portland cement (OPC) is the primary binder of concrete, accounting for approximately 5% to 7% of greenhouse gas (GHG) and carbon dioxide (CO2) emissions with an annual production rate of more than 4 billion tons. It is critical to reduce the carbon footprint of concrete without sacrificing its performance. To this end, this study focuses on the use of water hyacinth ash (WHA) as a pozzolanic binder in the production of concrete as a partial replacement for cement. Four mixes are designed to achieve C-25-grade concrete with varying proportions of cement replacement with WHA of 0%, 5%, 10%, and 15% of the cement weight. Extensive experiments are performed to examine the workability, strength, durability, and microstructure of concrete specimens. The test results confirm that incorporating WHA in concrete improved its workability, strength, and durability. The optimal results are obtained at the maximum OPC replacement level, with 10% WHA. The use of WHA as a partial replacement for cement greatly reduces the energy required for cement production and preserves natural resources. More research is needed to use WHA on a large scale to achieve greater sustainability in the concrete industry.
ISSN:2071-1050
2071-1050
DOI:10.3390/su142315501