Aquatic Weed for Concrete Sustainability

Mitiku Damtie Yehualaw, Mihiret Alemu, Behailu Zerihun Hailemariam, Duy-Hai Vo and Woubishet Zewdu Taffese ()
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Mitiku Damtie Yehualaw: Faculty of Civil and Water Resource Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Bahir Dar 6000, Ethiopia
Mihiret Alemu: Department of Construction Technology and Management, Woldia Institute of Technology, Woldia University, Woldia 7220, Ethiopia
Behailu Zerihun Hailemariam: Faculty of Civil and Water Resource Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Bahir Dar 6000, Ethiopia
Duy-Hai Vo: Department of Civil Engineering, University of Technology and Education, The University of Danang, 48 Cao Thang Street, Hai Chau District, Da Nang 550000, Vietnam
Woubishet Zewdu Taffese: School of Research and Graduate Studies, Arcada University of Applied Sciences, Jan-Magnus Jansson Aukio 1, 00560 Helsinki, Finland

Sustainability, 2022, vol. 14, issue 23, 1-16

Abstract: Ordinary Portland cement (OPC) is the primary binder of concrete, accounting for approximately 5% to 7% of greenhouse gas (GHG) and carbon dioxide (CO 2 ) 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.

Keywords: water hyacinth ash; concrete; fresh properties; compressive properties; microstructure properties; durability (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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