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and fly ash mixed with potassium silicate [27]. Researchers are looking into using microp-orous materials such as zeolite to enhance ionic conductivity by moving extra framework cations and …
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Coal combustion in thermal power plants yields fly ash as its predominant solid residue, accounting for roughly 60–88 % of all combustion-derived outputs [1].The global …
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Development of high-strength geopolymer mortar based on fly ash-slag: Correlational analysis of microstructural and mechanical properties and environmental …
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Here, a geopolymer derived from fly ash (FA) was synthesized using a combination of sodium silicate and potassium hydroxide (KOH) (2.5:1 ratio) as an alkali activator (AA) liquid. The FA/AA ratios were optimized, …
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At W/S = 0.26, the unconfined compressive strength initially increases and then decreases as the alkali activator dosage rises. XRD results reveal that the gel in the fly ash …
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Numerous investigators have utilised chemical activation to activate fly ash systems. Two different methods commonly utilised include alkali activation and sulfate activation.
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Effects of fly ash characteristics and alkaline activator components on compressive strength of fly ash-based geopolymer mortar Constr. Build. Mater., 175 ( 2018 ), pp. 41 - 54, …
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To test the setting time, workability, and rheology, the FAG paste was prepared by adding fly ash and activator to a mixing pot, gradually stirring for 2 min, stopping for 60 s, and …
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Fly ash (FA)-based geopolymer was prepared using sodium hydroxide and sodium silicate (in 2.5ratio) as an alkali activator liquid (AL). The condition of FA/AL was optimized for achieving …
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The advantage of wood fly ash-based alkaline activator include reducing the cost of the alkaline activated reaction (termed AAR henceforth in this paper) process and facilitating …
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Geopolymer, produced by the reaction of fly ash with an alkaline activator (mixture of Na2SiO3 and NaOH solutions), is an alternative to the use of ordinary Portland cement (OPC) in the …
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In this study, the impact of alkaline solutions composed of various Na 2 SiO 3 /NaOH ratio and NaOH molarity on the strength, chloride ingress and chloride binding capacity …
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Additionally, a study attributed to alkali activator ratios changed by activating low-calcium fly ash-based geopolymer concrete is rarely encountered in the literature. Na 2 SiO 3 …
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Olive Pomace Fly Ash as an Alternative Alkaline Activator for Electric Arc Furnace Slag for Sustainable Cementitious Materials. 2025, Materials. Investigating experimentally the …
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29 Si NMR (nuclear magnetic resonance) is used to analyze the types of silicate units in the fly ash-based geopolymers, studying the polymerization degree of the products …
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Alkali-activated slag–fly ash (AASF) binders are activated with alkaline fly ash–based aqueous nanosilica (FABANS) solutions. FABANS is highly amorphous nanosilica …
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As presented in Fig. 8, when quantifying the variations of the areas in the deconvoluted peaks correlating with the SiQn (mAl) units of the NMR spectra, it is clear the …
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This study analyzes the potential of olive pomace fly ash (OPFA) as an alternative alkaline activator for electric arc furnace slag (EAFS) in the manufacture of sustainable …
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Shu et al. employed an alkali-activated binder sourced from untreated coal gangue to stabilize MSWI fly ash, examining how factors like the quantity of activator and the water …
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As such, the ratios of fly ash to alkaline activator and Na2SiO3/NaOH play an important role in obtaining desirable compressive strength; the concentration of NaOH used in …
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Incorporating high volumes of fly ash (FA) in filling materials reduces costs and carbon emissions, but low early strength limits its use. This study investigates the effects of …
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Inclusion of ground granulated blast-furnace slag (GGBFS) with class F fly-ash can have a significant effect on the setting and strength development of geopolymer binders when …
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Geopolymer, produced by the reaction of fly ash with an alkaline activator (mixture of Na 2 SiO 3 and NaOH solutions), is an alternative to the use of ordinary Portland cement (OPC) in the …
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Geopolymer is an inorganic alumino-silicate polymer synthesized from alkaline activation of various aluminosilicate materials of geological origin or by-product materials like …
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Cemented rockfill that contains waste materials such as gangue and fly ash is an important approach to reduce environmental pollution, preserve natural resources, and …
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The combination mass ratios of fly ash/alkaline activator and Na2SiO3/NaOH of 2.0 and 2.5, respectively, produced the highest compressive strength after seven days. Geopolymer samples cured at 60 ...
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In precast concrete elements manufacturing, steam-cured concrete incorporating 30% fly ash encountered the problem of a too low demoulding compressive strength. To resolve it, this …
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The breakage of the glassy membrane at the surface of the fly ash by the alkaline activator could be verified and the partial presence of non-reacted fly ash particles could be …
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Characteristics of the fly ash govern the mix proportion of the alkaline activator. The compressive strength of fly ash-based geopolymer mortar (FBGM) made from five …
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Geopolymer, produced by the reaction of fly ash with an alkaline activator (mixture of Na2SiO3 and NaOH solutions), is an alternative to the use of ordinary Portland cement (OPC) in the ...
WhatsApp: +86 18221755073