Green Building Materials for Circular Economy - Geopolymer Foams

Kinga Korniejenko,; Kinga Pławecka,; Patrycja Bazan,; Beata Figiela,; Barbara Kozub,; Katarzyna Mróz,; Michał Łach,

doi:10.46604/peti.2023.11997

Cited by 4 publications

(5 citation statements)

References 29 publications

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“…The authors of [44] synthesized geopolymers based on fly ash with metakaolin additives with an H 2 O 2 foaming agent, and they had the lowest achieved density of 440 kg/m 3 with a compressive strength of 0.26 MPa. Korniejenko et al [60] synthesized foamed geopolymers with a density of 267 kg/m 3 and a compressive strength of 0.82 MPa. To achieve such properties, they used 36% of perhydrol as a foaming agent and a foam stabilizer-polyglycolic acid.…”

Section: Technological Properties Of Foamed Geopolymersmentioning

confidence: 99%

“…Energies 2023, 16, x FOR PEER REVIEW 9 of 19 compressive strength of 0.26 MPa. Korniejenko et al [60] synthesized foamed geopolymers with a density of 267 kg/m 3 and a compressive strength of 0.82 MPa. To achieve such properties, they used 36% of perhydrol as a foaming agent and a foam stabilizer-polyglycolic acid.…”

Section: Technological Properties Of Foamed Geopolymersmentioning

confidence: 99%

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Recycling Ash and Slag Waste from Thermal Power Plants to Produce Foamed Geopolymers

Yatsenko,

Goltsman,

Izvarin

et al. 2023

Energies

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Ash and slag waste (ASW) from coal combustion creates significant environmental and economic challenges. A promising method of ASW recycling is alkali activation with geopolymer material formation. This study investigates the influence of activating solution components (sodium hydroxide and sodium silicate) on the formation of porous geopolymers using ASW of different origins. The sodium hydroxide content of 0–4 wt.% and the sodium silicate content of 17–25 wt.% were studied. An increase in sodium hydroxide resulted in decreased density, but it adversely affected the strength. An increase in sodium silicate led to a compromised porous structure with relatively high density and compressive strength. An optimal composition, S19N3, comprising 3 wt.% of sodium hydroxide and 19 wt.% of sodium silicate obtained porous geopolymers with uniformly distributed 1.4–2 mm pores and a corresponding density of 335 kg/m3, a compressive strength of 0.55 MPa, a porosity value of 85.6%, and a thermal conductivity value of 0.075 W/(m·K). A mechanism for porous geopolymer formation was developed, including the interaction of alkaline components with ASW and a foaming agent, foaming, curing, and densification. The mechanism was examined using ASW from the Severodvinsk CHPP-1. This study allows for the optimization of geopolymer mixtures with various waste sources and the utilization of waste materials in the construction industry.

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Section: Technological Properties Of Foamed Geopolymersmentioning

confidence: 99%

Section: Technological Properties Of Foamed Geopolymersmentioning

confidence: 99%

Recycling Ash and Slag Waste from Thermal Power Plants to Produce Foamed Geopolymers

Yatsenko,

Goltsman,

Izvarin

et al. 2023

Energies

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“…These materials have similar properties to commercially available products, but when it comes to climate protection, they are much more environmentally friendly and energy e cient. The use of natural bers is another strong push in the direction of environmental friendliness, for the reason that bers are a readily available and renewable material, and their properties are similar or better to/from existing insulation solutions in the construction industry [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Basic research on multilayer composites based on fly ash and natural fibers

Bąk,

Mikuła,

Łach

2024

Preprint

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New restrictions on carbon dioxide emissions and electricity consumption are currently being introduced around the world. In many countries, innovative solutions are being used to reduce CO2 emissions and reduce material and energy consumption. The present work is related to the study of innovative binders based on geopolymers reinforced with composite bars and containing natural fibers for the production of layered building envelopes. The paper will present preliminary results of research on composites based on fly ash and natural materials of plant origin. The natural materials used to produce the samples are completely biodegradable. A 10-mol solution of sodium hydroxide with an aqueous solution of sodium silicate was used for the alkaline activation of geopolymers. The publication presents the results of physicochemical tests of base materials and natural materials, studies of thermal properties of fibers, mats, felts, and wools, morphology of fiber structure and texture, as well as physical and thermal properties of finished multilayer partitions. The results indicate the great potential of these materials in prefabrication and structural insulation applications. The work may have future applications in energy-efficient and low-carbon construction.

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“…Because of their high mechanical properties, the main area of potential application is civil engineering, especially the most demanding applications in construction industries [1,3]. Except for the excellent strength properties, they are also characterized by fire-resistance and high thermal stability, widening their area of application; they can also be utilized as lightweight materials for thermo-isolation purposes [3][4][5]. In addition, to increase their excellent mechanical properties, various types of additives have been tested as reinforcements [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Diatomite Addition on the Properties of Geopolymers Based on Fly Ash and Metakaolin

Nykiel,

Korniejenko,

Setlak

et al. 2024

Materials

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Geopolymer materials, considered to be an alternative to Portland cement-based concretes, can be produced from various types of waste aluminosilicate raw materials. This article presents the results of research related to the use of diatomite as an additive in geopolymers. The results of testing geopolymer composites with 1%, 3%, and 5% additions of diatomite with a grain size of 0–0.063 mm after and without thermal treatment were presented. This article presents the physical properties of the diatomite additive, the morphology of diatomite particles SEMs, thermal analysis, and compressive strength test results. In this research, diatomite was treated as a substitute for both fly ash and metakaolin (replaced in amounts of 1 and 3%) and as a substitute for sand introduced as a filler (in this case, 5% of diatomite was added). As a result of this research, it was found that the addition of diatomite instead of the main geopolymerization precursors in amounts of 1 and 3% had a negative impact on the strength properties of geopolymers, as the compressive strength was reduced by up to 28%. The introduction of crushed diatomite instead of sand in an amount of 5% contributed to an increase in strength of up to 24%.

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Green Building Materials for Circular Economy - Geopolymer Foams

Cited by 4 publications

References 29 publications

Recycling Ash and Slag Waste from Thermal Power Plants to Produce Foamed Geopolymers

Recycling Ash and Slag Waste from Thermal Power Plants to Produce Foamed Geopolymers

Basic research on multilayer composites based on fly ash and natural fibers

The Influence of Diatomite Addition on the Properties of Geopolymers Based on Fly Ash and Metakaolin

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