Fabrication of thermal insulation geopolymer bricks using ferrosilicon slag and alumina waste

Ahmed, M. M.; El-Naggar, K.A.M.; Tarek, Dalia; Ragab, Ayman; Sameh, Hesham; Zeyad, Abdullah M.; Tayeh, Bassam A.; Maafa, Ibrahim M.; Yousef, Ayman

doi:10.1016/j.cscm.2021.e00737

Cited by 57 publications

(26 citation statements)

References 83 publications

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“…Furthermore, the utilization of Portland cement has been found to have side effects like high bleeding, high plastic shrinkage, and some strength problems owing to the loss of water and incomplete hydration at early ages [7,8]. To eliminate these issues, many researchers paid considerable attention to replacing cement with pozzolanic materials or some admixtures by considering better grout performance with some eco-friendly materials [9][10][11][12]. In the last two decades, a new type of material called geopolymer has been successfully adapted in construction works, and it could be a good alternative material for grouting applications instead of cement [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Rheological, fresh, and mechanical properties of mechanochemically activated geopolymer grout: A comparative study with conventionally activated geopolymer grout

Abed

Abbas

Hamed

et al. 2022

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

Rheological, fresh, and mechanical properties of mechanochemically activated geopolymer grout: A comparative study with conventionally activated geopolymer grout

Abed

Abbas

Hamed

et al. 2022

Construction and Building Materials

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“…The S95 slag and silica fume used as mineral admixtures in this study were produced by Henan Borun Foundry Materials Co., Ltd., Zhengzhou, China, and fly ash was produced by Henan Gongyi Yuanheng Water Purification Materials Plant, Zhengzhou, China. If these industrial by-products, which are not easily disposed of, are used industrially for secondary use, they will not only bring economic and environmental benefits but will also solve the disposal problem of large amounts of waste [ 45 , 46 ]. Slag is made by reprocessing the floating molten slag on the surface of the iron from the ironmaking furnace [ 47 ].…”

Section: Methodsmentioning

confidence: 99%

Research on the Mechanical Properties and Microstructure of Modified Silt Sediment Geopolymer Materials

Liu

Chai

Liu

et al. 2022

Gels

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The treatment of silted sediment in the river is a global problem. The accumulation of waste sediment will lead to an adverse impact on the environment. In this paper, the silted sediment was reused to produce geopolymer composite materials via alkali-activated gelling modification. The effects of the modifiers of sodium silicate solution, quicklime, and Na2SO4 admixture, and the dosage of the slag, fly ash, and silica fume admixture, and curing conditions and age, on the compressive strength and microstructure of the geopolymer-modified sediment materials were studied. The crystalline phase and hydration products of the modified sediment geopolymer composites were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), respectively. A compressive strength test was conducted to evaluate the mechanical properties of the composites. The results showed that the type and dosage of modifier, amount of mineral admixture additive, cure conditions, and cure age had significant effects on the mechanical properties of the composites. The effect of the addition of mineral admixture on the compressive strength of the modified sediment specimens was more noticeable than that of the modifier. The compressive strength of the geopolymer-modified specimens was greatly increased by the addition of mineral dopants. When 10 wt.% silica fume is added, the compressive strength reaches a maximum value of 33.25 MPa at 60 days. The SEM-EDS results show that the C-S-H gels and C-A-S-H gels were the main hydration products. The results indicate that river siltation sediment is an excellent raw material for geopolymer-modified materials. It is feasible to produce reliable and sustainable hydraulic engineering materials by using river sediment geopolymer-modified materials.

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“…ˑRecently, ˑthere ˑhas ˑbeen ˑa ˑconsiderable ˑincrease ˑin ˑunderstanding ˑamong ˑa ˑdiverse ˑgroup ˑof ˑspecialists ˑin ˑthe ˑmanagement ˑof ˑtails ˑin ˑcommon ˑmethods . Over a dozen articles have been published detailing the efforts made to increase our understanding of the geopolymerization processes of tails in order to govern the properties of geopolymers for applications such as pollutant removal [25][26][27], sustainable building [28][29][30][31][32], and another ˑparticular ˑusage ˑ [12,29,30,[33][34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Mine tailings-based geopolymers: Mechanical and physical properties

Ahmed¹

2022

Preprint

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<p> </p> <p>The mining sector generates a substantial quantity of stone waste and tailings, which constitutes an environmental risk. The most prevalent method for disposing of this industrial waste is dumping, which contributes to soil deterioration and water contamination while acquiring precious land. It can be recycled using a number of processes, such as the promising geopolymerization technique, which transforms waste into value. This study reviews current developments in the manufacturing of mine tailings-based geopolymer composites from industrial waste as a possible sustainable building material. This paper also gives in-depth studies on the characteristics and behaviors of mine tailings composites used in geopolymer manufacturing, including physical and mechanical properties. This review also identifies knowledge gaps that must be filled in order to advance mine tailings composites for geopolymers.</p>

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Fabrication of thermal insulation geopolymer bricks using ferrosilicon slag and alumina waste

Cited by 57 publications

References 83 publications

Rheological, fresh, and mechanical properties of mechanochemically activated geopolymer grout: A comparative study with conventionally activated geopolymer grout

Rheological, fresh, and mechanical properties of mechanochemically activated geopolymer grout: A comparative study with conventionally activated geopolymer grout

Research on the Mechanical Properties and Microstructure of Modified Silt Sediment Geopolymer Materials

Mine tailings-based geopolymers: Mechanical and physical properties

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