Measurement of apparent sintering activation energy for densification of clays

Comin, André Biava; Zaccaron, Alexandre; Nandi, Vítor de Souza; Inocente, Jordana Mariot; Muller, Thuani Gesser; Dal-Bó, Alexandre Gonçalves; Bernardin, Adriano Michael; Peterson, Michael

doi:10.1180/clm.2022.11

Cited by 6 publications

(5 citation statements)

References 52 publications

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“…For water absorption ( Figure 6 c), Ag 2 O nanoparticles caused an increase up to 26% and 25% at 1% and 5% ( w / w ) to the 0% ( w / w ) mixture. This increase is caused by the appearance of a liquid phase that facilities porosity closure [ 71 ]. The addition of CuFe 2 O 4 nanoparticles resulted in a decrease in water absorption of up to 33% and 26% at 1% and 5% ( w / w ), respectively.…”

Section: Resultsmentioning

confidence: 99%

Impact of Nanoparticle Additions on Life Cycle Assessment (LCA) of Ceramic Tiles Production

Saavedra,

Osma

2024

Nanomaterials

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The ceramic tile industry, with significant energy and material demands in its manufacturing processes, has employed technological innovations in energy efficiency, advanced equipment and tile thickness reduction to address these challenges. This study aimed to assess the impact of Ag2O, CuFe2O4, Fe3O4, and SiO2 nanoparticles (0%, 1%, and 5% by weight) on the mechanical strength, water absorption, and apparent thermal conductivity of ceramic tiles, as well as their capacity to reduce energy and raw material consumption. This reduction translates into a decrease in environmental impacts, which have been evaluated through life cycle assessment (LCA) methodology applied to the manufacturing processes. Nanoparticles (Ag2O, CuFe2O4, Fe3O4, and SiO2) were initially screened on TF clay (0%, 1%, 5% w/w), and the most effective were applied to CR1 and CR2 clays (0%, 1%, 5% w/w). Findings indicated a 32% increase in temperature gradient and a 16% improvement in flexural strength with the addition of Fe3O4 nanoparticle at 1% (w/w) in TF clay. Furthermore, there was a potential 48% reduction in energy consumption, and up to 16% decrease in tile weight or thickness without affecting the flexural strength property of the test tiles. LCA results demonstrated that the addition of Fe3O4 nanoparticle has potential reductions of up to 20% in environmental impacts. This study suggests that nanoparticle addition offers a viable alternative for reducing energy and material consumption in the ceramic tile industry. Future research should focus on assessing the economic impact of transitioning to a sustainable business model in the ceramic tile industry with nanoparticles addition.

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Section: Resultsmentioning

confidence: 99%

Impact of Nanoparticle Additions on Life Cycle Assessment (LCA) of Ceramic Tiles Production

Saavedra,

Osma

2024

Nanomaterials

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“…Moreover, the flexural strength of the tiles prepared in this work was significantly greater than those obtained from schist materials (156.15 kg cm –2 ; Kuru Mutlu & Mutlu, 2022). Thus, the material alternatives available to the tile industry can be expanded by developing such clay mixtures, which will reduce the energy costs of industrial processes (Comin et al , 2021).…”

Section: Resultsmentioning

confidence: 99%

Muttalip green clay and its ultraviolet and infrared absorption and reflection

Mutlu

2022

Clay miner.

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The search for sufficiently high-quality clays for use in the tile industry represents a significant challenge. This study aimed to prepare Muttalip green clay tiles with flexural strengths adhering to the TS EN 1304:2016 standard. Muttalip green clay was subjected to sieving, vacuum pressed, dried and then baked to obtain galette tiles. The tiles were analysed subsequently using optical techniques, including X-ray diffraction, X-ray fluorescence spectrometry and field-emission scanning electron microscopy. The influence of various firing temperatures (900, 950 and 1000°C) on the flexural strength of the tiles was also investigated. The tiles obtained at 950°C exhibited a maximum flexural strength of 153.91 kg cm–2. Fourier-transform infrared spectroscopy revealed that the tiles reflect ultraviolet A radiation and absorb infrared radiation. Muttalip green clay is a suitable material for preparing tiles for roofing applications.

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“…According to Dondi [66], variation in drying shrinkage is "acceptable" or "optimal" The firing shrinkage behavior of the formulations showed that F2, with a high content of free silica, exhibited higher dimensional stability (less shrinkage) than that of samples F1 and F3. On the other hand, the presence of fluxing oxides (higher in F1 and F3), which enhance the formation of a liquid phase in the ceramic body and the densification of the piece, may cause an increase in shrinkage [65].…”

Section: Technological Characterization Of the Clays Compositionsmentioning

confidence: 99%

Sustainable Mining: Reuse of Clay from Abandoned Areas in the South of Brazil for Ceramic Production Based on a Simplex Design

Saviatto,

Zaccaron,

Nandi

et al. 2023

Materials

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The environmental impact of clay mining can be minimized using extractive mineral circularity practices. Combining the available knowledge of the characteristics of different clays with statistical tools was a decisive step for the improved use of mining resources. Through blends, all the mined materials can be incorporated to produce quality ceramic products. This study identified two types of clay from abandoned mining areas in the southern state of Santa Catarina, Brazil. These raw materials were valued together with plastic clay, which is widely used in the region, to develop 10 different formulations using a mixture design method. The clays were characterized using average granulometric distribution, mineralogical composition, and chemical, thermal and plasticity analyses. The specimens were shaped by extrusion, dried in an oven, fired in a muffle furnace and characterized based on their shrinkage, water absorption and compressive strength values. Two clays with varying characteristics—one with low workability and the other with a high silica content—exhibited difficulties (generating defects) in the extrusion shaping process, which compromised the final quality of the ceramic paste. Results showed that incorporating up to 45% by mass of the low-workability clay resulted in an increase in water absorption. The more siliceous clay improved dimensional control; however, its use at high contents (~80%) decreased the mechanical resistance. Nevertheless, when used in controlled amounts, these clays can be beneficial to the production of blocks and bricks because they have the potential to improve some properties of the finished ceramic products.

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Measurement of apparent sintering activation energy for densification of clays

Cited by 6 publications

References 52 publications

Impact of Nanoparticle Additions on Life Cycle Assessment (LCA) of Ceramic Tiles Production

Impact of Nanoparticle Additions on Life Cycle Assessment (LCA) of Ceramic Tiles Production

Muttalip green clay and its ultraviolet and infrared absorption and reflection

Sustainable Mining: Reuse of Clay from Abandoned Areas in the South of Brazil for Ceramic Production Based on a Simplex Design

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