Recycling glass-polishing sludge and aluminum anodising sludge in polyurethane and cement composites: fire performance and mechanical properties

Magnago, Rachel Faverzani; Braglia, Thiago de Alcântara; Aguiar, Ana Carolina de; Baungarten, Polyana; Mendonça, Bruno Afonso Büchele; Silva, Heloisa Regina Turatti; Egert, Paola; Girotto, Edivandro; Júnior, Américo Cruz; Parma, Gabriel Oscar Cremona

doi:10.1007/s10163-021-01202-x

Cited by 6 publications

(2 citation statements)

References 37 publications

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“…Over the past few years, nanotechnology was utilized widely in almost all fields of our life to provide novel applications, especially in the construction sector. Nanoparticles' incorporation to cement materials to inspire new types of building materials with high efficiency and resistance under drastic environmental conditions used in diverse applications are being devoted much attention [8,9].…”

Section: Introductionmentioning

confidence: 99%

Utilization of alum sludge waste for production of eco-friendly blended cement

Mohamed

El-Gamal

Farghali

2022

J Mater Cycles Waste Manag

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This work was focused on evaluating the suitability of replacing Portland cement (PC) by 5, 10 and 15 mass % of activated alum sludge waste (AAS) as a pozzolanic material. Exploitation of low-cost nanocomposite for bolstering the physical, mechanical, and stability against firing of PC–AAS-hardened composites was inspected. CuFe2O4 spinel nanoparticle with average particle size (~ 50 nm) was prepared. Inclusion of CuFe2O4 spinel in different PC–AAS-hardened composites bolsters their physicomechanical features at almost normal curing ages as well as their stability against firing. The positive impact of synthesized CuFe2O4 spinel was affirmed via TGA/DTG and XRD techniques, which indicated the presence of diverse hydration yields such as CSHs, CASHs, CFSH, and CuSH that enhance the overall physicomechanical characteristics and thermal stability of various PC–AAS-hardened composites. The composite containing (90 PC–10 AAS waste–2 CuFe2O4) offers many benefits from the economic and environmental view. Graphical abstract

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Section: Introductionmentioning

confidence: 99%

Utilization of alum sludge waste for production of eco-friendly blended cement

Mohamed

El-Gamal

Farghali

2022

J Mater Cycles Waste Manag

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“…In recent years, nanotechnology has seen widespread application across virtually all areas of human endeavor to produce fresh uses. The industry of building and construction is particularly good at illustrating this trend's prevalence 11 . A lot of attention is being paid to the process of incorporating nanoparticles into cement materials.…”

Section: Introductionmentioning

confidence: 99%

Cost-effective and green additives of pozzolanic material derived from the waste of alum sludge for successful replacement of portland cement

Mohamed

Farghali

Eessaa

et al. 2022

Sci Rep

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The major objective of this study was to examine the viability of using 5, 10, or 15 mass% of Activated Alum Sludge waste (AAS) instead of Ordinary Portland Cement (OPC) as a pozzolanic ingredient in concrete. This fundamental inquiry framed the investigation and OPC-AAS-hardened composites were studied to see whether they may benefit from inexpensive nanocomposites in terms of improved physical properties, mechanical strength, and resistance to heat and flame. The investigation set out to see how inexpensive nanocomposite might be put to use and the nanoparticles of CuFe2O4 spinel with an average size of less than 50 nm were successfully manufactured. Many different OPC-AAS-hardened composites benefit from the addition of CuFe2O4 spinel, which increases the composites' resistance to fire and enhances their physicomechanical properties at roughly average curing ages. Synthesized CuFe2O4 spinel was shown to have desirable characteristics by TGA/DTG and XRD. By using these methods, we were able to identify a broad variety of hydration yields, including C–S–Hs, C–A–S–Hs, C–F–S–Hs, and Cu–S–Hs, that enhance the physicomechanical properties and thermal resistivity of OPC-AAS-hardened composites as a whole. The composite material comprising 90% OPC, 10% AAS waste, and 2% CuFe2O4 has several positive economic and environmental outcomes.

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