Effect of addition diatomite powder on mechanical strength, elevated temperature resistance and microstructural properties of industrial waste fly ash-based geopolymer

Özsoy, Ahmet; Örklemez, Ezgi; İlkentapar, Serhan

doi:10.1007/s10163-023-01692-x

Cited by 5 publications

(6 citation statements)

References 46 publications

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“…A reduction in compressive strength as an effect of diatomite addition has been observed previously for geopolymers based on fly ash [12,16]. However, other investigation showed that diatomite addition increased mechanical properties [32].…”

Section: Mechanical Properties Of Compositesupporting

confidence: 66%

“…The diatomite was added in amounts of 1, 2, 3, 4 and 5%. The results show that, according to the mechanical properties, the best results were obtained for 1% and 2%; in these cases, diatomite addition increased the flexural and compressive strengths compared to the reference sample [32].…”

Section: Introductionmentioning

confidence: 90%

“…The geopolymer's temperature resistance was also investigated by Özsoy et al [32]. This research focused on the influence of diatomite on material properties in elevated temperatures-300, 600, and 900 • C [32]. The diatomite was added in amounts of 1, 2, 3, 4 and 5%.…”

Section: Introductionmentioning

confidence: 99%

“…Potentially, advancements made using the smallest fraction of diatomite can result in the greatest ecological and economic benefits, because it is this fraction that is considered to be waste when mining diatomite. Secondly, most scientists in the field of research have tested relatively large amounts of diatomite additive, but the latest investigation conducted by Özsoy et al [32] shows that a small amount of diatomite can work better. It is important to take into consideration previous experiences with silica fume, which show that micro additives work better [7,8].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Mechanical Properties Of Compositesupporting

confidence: 66%

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…Özsoy et al investigated the effect of diatomite dust on the strength properties of fly ash-based geopolymer mortars. The addition of 2% diatomite dust increased the compressive strength and flexural strength [66]. In another study, researchers investigated the effect of using chalcedonite powder as a partial substitute for cement in mortars.…”

Section: Mechanical Properties and Structure Observationmentioning

confidence: 99%

Application of Industrial Waste Materials by Alkaline Activation for Use as Geopolymer Binders

Setlak,

Mikuła,

Łach

2023

Materials

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The purpose of this study is to synthesize geopolymer binders as an environmentally friendly alternative to conventional cement using available local raw materials. Waste materials such as chalcedonite (Ch), amphibolite (A), fly ash from lignite combustion (PB), and diatomite dust (D) calcined at 900 °C were used to produce geopolymer binders. Metakaolin (M) was used as an additional modifier for binders based on waste materials. The base materials were subjected to fluorescence X-ray fluorescence (XRF) analysis and X-ray diffractometry (XRD) to determine chemical and phase composition. A laser particle size analysis was also performed. The various mixtures of raw materials were activated with a 10 M solution of NaOH and sodium water glass and then annealed for 24 h at 60 °C. The produced geopolymer binders were conditioned for 28 days under laboratory conditions and then subjected to microstructural analysis (SEM) and flexural and compressive strength tests. The best compressive strength results were obtained by the Ch + PB samples—more than 57 MPa, while the lowest results were obtained by the Ch + D+A + M samples—more than 20 MPa. On the other hand, as a result of the flexural strength tests, the highest flexural results were obtained by D + A + M + PB binders—more than 12 MPa, and the lowest values were obtained by binders based on Ch + D+A + M—about 4.8 MPa.

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Slag/diatomite-based alkali-activated lightweight composites containing waste andesite sand: mechanical, insulating, microstructural and durability properties

Bayraktar,

Yakupoglu,

Benli

2023

Archiv.Civ.Mech.Eng

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Effect of addition diatomite powder on mechanical strength, elevated temperature resistance and microstructural properties of industrial waste fly ash-based geopolymer

Cited by 5 publications

References 46 publications

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

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

Application of Industrial Waste Materials by Alkaline Activation for Use as Geopolymer Binders

Slag/diatomite-based alkali-activated lightweight composites containing waste andesite sand: mechanical, insulating, microstructural and durability properties

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