This study proposes different manufacturing techniques (manual pelletization, powder pressing, and “shell scaffold”) to obtain lightweight clay ceramics containing recovery raw materials. The sintering in an electrical furnace (1000 °C, 1 h processing time) was conducted by traditional firing from room temperature, for pressed and shell-scaffold samples, while the flash heating (i.e., samples directly put at 1000 °C) was used only for the pellets. The porous materials (porosity 40–80%), functionalized with nutrients (K and P) in amounts to confer the fertilizer capability, gave suitable results in terms of pH (6.7–8.15) and electrical conductivity (0.29–1.33 mS/cm). Thus, such materials can be considered as feasible lightweight clay ceramics, with a positive effect on the soil. These findings permit us to hypothesize a potential use in green roofs or in agronomic applications.

Comparison of Three Manufacturing Techniques for Sustainable Porous Clay Ceramics / Andreola, Nora Maria; Lancellotti, Isabella; Sergi, Rachele; Cannillo, Valeria; Barbieri, Luisa. - In: MATERIALS. - ISSN 1996-1944. - 14:(2021), pp. 1-18. [10.3390/ma14010167]

Comparison of Three Manufacturing Techniques for Sustainable Porous Clay Ceramics

Fernanda Andreola;Isabella Lancellotti;Rachele Sergi;Valeria Cannillo;Luisa Barbieri
2021

Abstract

This study proposes different manufacturing techniques (manual pelletization, powder pressing, and “shell scaffold”) to obtain lightweight clay ceramics containing recovery raw materials. The sintering in an electrical furnace (1000 °C, 1 h processing time) was conducted by traditional firing from room temperature, for pressed and shell-scaffold samples, while the flash heating (i.e., samples directly put at 1000 °C) was used only for the pellets. The porous materials (porosity 40–80%), functionalized with nutrients (K and P) in amounts to confer the fertilizer capability, gave suitable results in terms of pH (6.7–8.15) and electrical conductivity (0.29–1.33 mS/cm). Thus, such materials can be considered as feasible lightweight clay ceramics, with a positive effect on the soil. These findings permit us to hypothesize a potential use in green roofs or in agronomic applications.
31-dic-2020
14
1
18
Comparison of Three Manufacturing Techniques for Sustainable Porous Clay Ceramics / Andreola, Nora Maria; Lancellotti, Isabella; Sergi, Rachele; Cannillo, Valeria; Barbieri, Luisa. - In: MATERIALS. - ISSN 1996-1944. - 14:(2021), pp. 1-18. [10.3390/ma14010167]
Andreola, Nora Maria; Lancellotti, Isabella; Sergi, Rachele; Cannillo, Valeria; Barbieri, Luisa
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1227240
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