Recycling and Utilization of some Waste Clays for Production of Sintered Ceramic Bodies

Zawrah, M.F.; Badr, H.A.; Khattab, R.M.

doi:10.1007/s12633-019-00193-7

Cited by 13 publications

(3 citation statements)

References 31 publications

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“…The hump around 20-40 • (2θ) exhibits the formation of gels such as C-S-H, C-A-S-H and N, C-A-S-H in all the mixes. This co-existence of the gels is also described in [114,115], to the higher strength gain of the geopolymer binders. Similarly, Kamath et al [113] studied the XRD patterns of the geopolymer binder system made up of FA and GGBFS, with the addition of metakaolin (5%, 10%, 20% by weight).…”

Section: Fa-ggbfs-based Geopolymer Bindermentioning

confidence: 58%

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Sustainable Fly Ash Based Geopolymer Binders: A Review on Compressive Strength and Microstructure Properties

et al. 2022

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As a result of global warming, the pursuance of low-carbon, sustainable building materials has been prioritized. The development of geopolymer/cement-less binders can be considered an innovative and green way forward to minimize carbon footprint and tackle industrial waste material utilization. However, the chemical composition and properties of industrial waste-derived geopolymer binders varies considerably based on the chemical compositions of the source materials. This review paper presents a comprehensive understanding of the role of different chemical compositions (namely SiO2, Al2O3, CaO, Fe2O, and MgO) available in contemporary industrial wastes and the development of geopolymer binders. Subsequently, the compressive and microstructure properties of various FA-based geopolymer binders have been discussed to exhibit the feasibility of FA as a reliable source material. Significant findings and research gaps have been considered to aid future research works. Indeed, they provide guidelines for the commercial implementation of FA-based geopolymer binders as a low-carbon alternative to Portland cement.

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Section: Fa-ggbfs-based Geopolymer Bindermentioning

confidence: 58%

“…The hump around 20-40° (2θ) exhibits the formation of gels such as C-S-H, C-A-S-H and N, C-A-S-H in all the mixes. This co-existence of the gels is also described in [114,115], to the higher strength gain of the geopolymer binders. [113].…”

Section: Fa-ggbfs-based Geopolymer Bindermentioning

confidence: 58%

Sustainable Fly Ash Based Geopolymer Binders: A Review on Compressive Strength and Microstructure Properties

et al. 2022

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“…In Figures 11(b)-11(e), the microstructures for the samples KA0.5 h, KA3 h, KA6 h, and KA12 h, respectively, are shown. In these figures, elongated mullite grains were found, surrounded by a dark phase [32]. It is well known that mullite grains with these characteristics grow when they are immersed in a vitreous phase.…”

Section: Differential Ermal Analysis (Dta)mentioning

confidence: 76%

Effect of Particle Size and Sintering Temperature on the Formation of Mullite from Kyanite and Aluminum Mixtures

Hernández

Labra

Guerrero

et al. 2021

Advances in Materials Science and Engineering

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The effect of particle size and sintering temperature of the mixtures of kyanite and metallic aluminum related to the thermal transformation of kyanite into primary mullite and free silica was studied. In addition, the reaction between α-Al2O3 (in situ produced by aluminum oxidation) and the silica was obtained in cristobalite structure from kyanite to obtain secondary mullite. The kyanite powders were milled by 0.5, 3, 6, and 12 hours and then were mixed with aluminum powder, which were previously milled by 3 hours. After that, the powders were characterized by X-ray diffraction technique (XRD), scanning electronic microscopy (SEM), differential thermal analysis (DTA), and thermogravimetric analysis (TGA), and the particle size was determined in a centrifugal analyzer particle size Shimadzu model SA-CP4. The mixed powders were pressed uniaxially into cylindrical samples (compacts), and then sintering was conducted at 1100, 1200, 1300, 1400, 1500, and 1600°C; these samples were characterized by XRD, SEM, and thermodilatometry analysis (TD); density and open porosity measurements were performed by the Archimedes method. The samples were thermally etched to observe the microstructure, which consisted of mullite equiaxial grains contained in a glassy phase. It was observed that the nonmilled kyanite mineral becomes into mullite plus silica at temperatures between 1400 and 1500°C. When the particle size was reduced at sizes less than 1 µm, the transformation temperature was low until 200°C; the X-ray patterns of the sintered samples at 1400°C, ground for 6 hours, showed mullite peaks with small reflections of cristobalite and α-Al2O3, and these samples exhibited high density and low open porosity.

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Industrial Wastes for Production of Thermally Stable and Corrosion Resistant alumino-silicate Refractory Ceramic Bodies

Mohamed,

Ngida,

Farag

et al. 2024

J Inorg Organomet Polym

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Recycling and Utilization of some Waste Clays for Production of Sintered Ceramic Bodies

Cited by 13 publications

References 31 publications

Sustainable Fly Ash Based Geopolymer Binders: A Review on Compressive Strength and Microstructure Properties

Sustainable Fly Ash Based Geopolymer Binders: A Review on Compressive Strength and Microstructure Properties

Effect of Particle Size and Sintering Temperature on the Formation of Mullite from Kyanite and Aluminum Mixtures

Industrial Wastes for Production of Thermally Stable and Corrosion Resistant alumino-silicate Refractory Ceramic Bodies

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