Utilization of Textile-Dyeing Sludge Incineration Ash in Autoclaved Aerated Concrete: Fid-Bau Portal

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Utilization of Textile-Dyeing Sludge Incineration Ash in Autoclaved Aerated Concrete

Wu, Qisheng / Wang, Li / Zhu, Zheyu / Zhu, Huajun

Utilizing hazardous solid waste to produce autoclaved aerated concrete (AAC) has been a prominent area of research in the building materials industry. This paper proposes the preparation of AAC by substituting quartz sand with solid waste textile-dyeing sludge incineration ash, which met A5.0 (compressive strength $\geq 5 MPa$ ) and B07 (Bulk density $\leq 750 kg / m^{3}$ ) grade requirements. The hydration products in AAC by using textile-dyeing sludge incineration ash (TDSIA) were evaluated by X-ray diffraction, thermogravimetry, and field emission scanning electron microscopy. The results indicated that ${CaSO}_{4}, {Fe}_{3} O_{4}$ , and others in TDSIA were generating hydrogarnet, calcium aluminate hydrate, ettringite, and calcium iron aluminum silicate. Grinding was found to promote the autoclaved hydration of ${CaSO}_{4}$ and ${Fe}_{3} O_{4}$ in TDSIA. The AAC process effectively immobilized heavy metals from TDSIA and led to a lower concentration of heavy metals in the leachate. These findings offer a promising and environment-friendly method for the resource utilization of TDSIA.

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Utilization of Textile-Dyeing Sludge Incineration Ash in Autoclaved Aerated Concrete

Wu, Qisheng / Wang, Li / Zhu, Zheyu / Zhu, Huajun

Utilizing hazardous solid waste to produce autoclaved aerated concrete (AAC) has been a prominent area of research in the building materials industry. This paper proposes the preparation of AAC by substituting quartz sand with solid waste textile-dyeing sludge incineration ash, which met A5.0 (compressive strength $\geq 5 MPa$ ) and B07 (Bulk density $\leq 750 kg / m^{3}$ ) grade requirements. The hydration products in AAC by using textile-dyeing sludge incineration ash (TDSIA) were evaluated by X-ray diffraction, thermogravimetry, and field emission scanning electron microscopy. The results indicated that ${CaSO}_{4}, {Fe}_{3} O_{4}$ , and others in TDSIA were generating hydrogarnet, calcium aluminate hydrate, ettringite, and calcium iron aluminum silicate. Grinding was found to promote the autoclaved hydration of ${CaSO}_{4}$ and ${Fe}_{3} O_{4}$ in TDSIA. The AAC process effectively immobilized heavy metals from TDSIA and led to a lower concentration of heavy metals in the leachate. These findings offer a promising and environment-friendly method for the resource utilization of TDSIA.

Utilization of Textile-Dyeing Sludge Incineration Ash in Autoclaved Aerated Concrete

Wu, Qisheng / Wang, Li / Zhu, Zheyu / Zhu, Huajun

Utilizing hazardous solid waste to produce autoclaved aerated concrete (AAC) has been a prominent area of research in the building materials industry. This paper proposes the preparation of AAC by substituting quartz sand with solid waste textile-dyeing sludge incineration ash, which met A5.0 (compressive strength $\geq 5 MPa$ ) and B07 (Bulk density $\leq 750 kg / m^{3}$ ) grade requirements. The hydration products in AAC by using textile-dyeing sludge incineration ash (TDSIA) were evaluated by X-ray diffraction, thermogravimetry, and field emission scanning electron microscopy. The results indicated that ${CaSO}_{4}, {Fe}_{3} O_{4}$ , and others in TDSIA were generating hydrogarnet, calcium aluminate hydrate, ettringite, and calcium iron aluminum silicate. Grinding was found to promote the autoclaved hydration of ${CaSO}_{4}$ and ${Fe}_{3} O_{4}$ in TDSIA. The AAC process effectively immobilized heavy metals from TDSIA and led to a lower concentration of heavy metals in the leachate. These findings offer a promising and environment-friendly method for the resource utilization of TDSIA.

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Title:

Utilization of Textile-Dyeing Sludge Incineration Ash in Autoclaved Aerated Concrete

Additional title:

J. Mater. Civ. Eng.

Contributors:

Wu, Qisheng (author) / Wang, Li (author) / Zhu, Zheyu (author) / Zhu, Huajun (author)

Published in:

Journal of Materials in Civil Engineering ; 36

Publication date:

2024-12-01

ISSN:

1943-5533 , 0899-1561

DOI:

https://doi.org/10.1061/JMCEE7.MTENG-18131

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Microstructure , Textile-dyeing sludge incineration ash (TDSIA) , Heavy metal leaching , Autoclaved aerated concrete

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