Physical and high temperature properties of basalt fiber-reinforced geopolymer foam with hollow microspheres

Wang, Jian; Li, Xueying; Hu, Yu; Li, Yiyi; Hu, Ping; Zhao, Yading

doi:10.1016/j.conbuildmat.2023.134698

Cited by 22 publications

(3 citation statements)

References 88 publications

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“…Considering the possibility of using industrial waste to produce the material, the mechanical properties comparable to cementitious materials and the high resistance of the geopolymer matrix to fire and high temperatures, geopolymers show great potential for this application [ 9 ]. In recent years, there has been a significant research focus on geopolymer foams characterized by tailor-made pore architectures [ 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Foaming and Physico-Mechanical Properties of Geopolymer Pastes Manufactured from Post-Metallurgical Recycled Slag

Sitarz,

Zdeb,

Mróz

et al. 2024

Materials

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This paper presents a research program aimed towards developing a method of producing lightweight, porous geopolymer composites for the construction industry based on industrial wastes. A direct method involving the addition of chemicals is currently most commonly used to produce the porous mineral structure of a geopolymer matrix. This relies on a reaction in a highly alkaline environment of the geopolymer to produce a gas (usually hydrogen or oxygen) that forms vesicles and creates a network of pores. This paper demonstrates the feasibility of producing a slag-based geopolymer paste foamed with aluminum powder, taking into account different parameters of fresh paste production: the mixing duration, its speed and the timing of foaming agent addition. The foaming process of the fresh paste in terms of the volumetric changes and temperature development of the fresh paste during the curing of the material are observed. After hardening, the physical properties (density and porosity) as well as the mechanical parameters (compressive strength and work of damage) are determined for the nine manufactured foamed pastes. Image analysis software was used to assess the porosity distribution of the material across the cross-section of the samples. The results enabled the design of the mixing procedure to be adopted during the manufacture of such composites.

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Section: Introductionmentioning

confidence: 99%

Foaming and Physico-Mechanical Properties of Geopolymer Pastes Manufactured from Post-Metallurgical Recycled Slag

Sitarz,

Zdeb,

Mróz

et al. 2024

Materials

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“…As analysis in the SCOPUS database showed, the addition of powdered basalt or basalt fibers to foamed geopolymers was described in only four articles (search criteria words: basalt AND powder AND geopolymer AND foam) [28][29][30][31], of which only one was about shredded material introduced as an additive to foamed geopolymers. A careful analysis using various keywords found a few more scientific papers, such as [32,33]. The As analysis in the SCOPUS database showed, the addition of powdered basalt or basalt fibers to foamed geopolymers was described in only four articles (search criteria words: basalt AND powder AND geopolymer AND foam) [28][29][30][31], of which only one was about shredded material introduced as an additive to foamed geopolymers.…”

Section: Introductionmentioning

confidence: 99%

“…The As analysis in the SCOPUS database showed, the addition of powdered basalt or basalt fibers to foamed geopolymers was described in only four articles (search criteria words: basalt AND powder AND geopolymer AND foam) [28][29][30][31], of which only one was about shredded material introduced as an additive to foamed geopolymers. A careful analysis using various keywords found a few more scientific papers, such as [32,33]. The addition of basalt powder to geopolymers or cement mortars was also presented in articles by other authors [34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Addition of Basalt Powder on the Properties of Foamed Geopolymers

Łach,

Kozub,

Bednarz

et al. 2024

Materials

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Geopolymers are binder materials that are produced by a chemical reaction between silica or aluminum compounds with an alkaline activating solution. Foamed geopolymer materials are increasingly being cited as a viable alternative to popular organic insulation materials. Since the foaming process of geopolymers is difficult to control, and any achievements in improving the performance of such materials are extremely beneficial, this paper presents the effect of the addition of basalt powder on the properties of foamed geopolymers. This paper presents the results of physicochemical studies of fly ash and basalt, as well as mechanical properties, thermal properties, and structure analysis of the finished foams. The scope of the tests included density tests, compressive strength tests, tests of the thermal conductivity coefficient using a plating apparatus, as well as microstructure tests through observations using light and scanning microscopy. Ground basalt was introduced in amounts ranging from 0 to 20% by mass. It was observed that the addition of basalt powder contributes to a reduction in and spheroidization of pores, which directly affect the density and pore morphology of the materials tested. The highest density of 357.3 kg/m3 was characterized by samples with a 5 wt.% basalt powder addition. Their density was 14% higher than the reference sample without basalt powder addition. Samples with 20 wt.% basalt addition had the lowest density, and the density averaged 307.4 kg/m3. Additionally, for the sample containing 5 wt.% basalt powder, the compressive strength exceeded 1.4 MPa, and the thermal conductivity coefficient was 0.1108 W/m × K. The effect of basalt powder in geopolymer foams can vary depending on many factors, such as its chemical composition, grain size, content, and physical properties. The addition of basalt above 10% causes a decrease in the significant properties of the geopolymer.

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Utilization of industrial wastes in non-sintered bricks: microstructure and environmental impacts

Shi,

Ma,

Zhao

et al. 2024

Environ Sci Pollut Res

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Physical and high temperature properties of basalt fiber-reinforced geopolymer foam with hollow microspheres

Cited by 22 publications

References 88 publications

Foaming and Physico-Mechanical Properties of Geopolymer Pastes Manufactured from Post-Metallurgical Recycled Slag

Foaming and Physico-Mechanical Properties of Geopolymer Pastes Manufactured from Post-Metallurgical Recycled Slag

The Influence of the Addition of Basalt Powder on the Properties of Foamed Geopolymers

Utilization of industrial wastes in non-sintered bricks: microstructure and environmental impacts

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