Utilization of Municipal Solid Waste Incineration (MSWIFA) in Geopolymer Concrete: A Study on Compressive Strength and Leaching Characteristics DOI Open Access
Qiyong Xu,

Ning Shang,

Jae Hac Ko

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(18), P. 4609 - 4609

Published: Sept. 20, 2024

This study explores the utilization of municipal solid waste incineration fly ash (MSWIFA) in geopolymer concrete, focusing on compressive strength and heavy metal leachability. MSWIFA was sourced from a Shenzhen plant pretreated by washing to remove soluble salts. Geopolymer concrete prepared incorporate with washed or unwashed tested under different pH conditions (2.88, 4.20, 10.0). Optimal achieved Si/Al ratio 1.5, water/Na 10, sand-binder 0.6. The pretreatment significantly enhanced strength, particularly alkaline conditions, GP-WFA (washed MSWIFA) exhibiting 49.6% increase compared 21.3% GP-FA (unwashed MSWIFA). Additionally, GP-WFA’s reached 41.7 MPa, comparable that control (GP-control) at 43.7 MPa. Leaching tests showed acidic (pH 2.88) promoted leaching, which increased over leaching time, while an environment reduced leachability metals. These findings highlight potential using promoting sustainable construction practices, conditions.

Language: Английский

Utilization of Municipal Solid Waste Incineration (MSWIFA) in Geopolymer Concrete: A Study on Compressive Strength and Leaching Characteristics DOI Open Access
Qiyong Xu,

Ning Shang,

Jae Hac Ko

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(18), P. 4609 - 4609

Published: Sept. 20, 2024

This study explores the utilization of municipal solid waste incineration fly ash (MSWIFA) in geopolymer concrete, focusing on compressive strength and heavy metal leachability. MSWIFA was sourced from a Shenzhen plant pretreated by washing to remove soluble salts. Geopolymer concrete prepared incorporate with washed or unwashed tested under different pH conditions (2.88, 4.20, 10.0). Optimal achieved Si/Al ratio 1.5, water/Na 10, sand-binder 0.6. The pretreatment significantly enhanced strength, particularly alkaline conditions, GP-WFA (washed MSWIFA) exhibiting 49.6% increase compared 21.3% GP-FA (unwashed MSWIFA). Additionally, GP-WFA’s reached 41.7 MPa, comparable that control (GP-control) at 43.7 MPa. Leaching tests showed acidic (pH 2.88) promoted leaching, which increased over leaching time, while an environment reduced leachability metals. These findings highlight potential using promoting sustainable construction practices, conditions.

Language: Английский

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