Title

USE OF FGD FOR THE PRODUCTION OF ALKALI ACTIVATED TILES

USE OF FGD FOR THE PRODUCTION OF ALKALI ACTIVATED TILES

Authorship

Magalhaes, Diego Correa; Marvila, Markssuel Teixeira; Azevedo, Afonso Rangel Garcez de; Vieira, Carlos Maurício Fontes

Magalhaes, Diego Correa

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Marvila, Markssuel Teixeira

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Azevedo, Afonso Rangel Garcez de

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Vieira, Carlos Maurício Fontes

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DOI

10.5151/5463-5463-35067

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Abstract

Alkali Activated Tiles (AAT) are eco-friendly materials that efficiently replace cementitious and ceramic materials. In this context, the objective of this work was to carry out the production of AAT using commercial metakaolin and flue gas desulfurization waste (FGD). The tiles were produced in the molar ratio SiO2/Al2O3=3.00, using a composition with 0, 10 and 20% substitution of metakaolin by FGD. Prismatic specimens were produced, with tests of tensile strength, mass density, water absorption and linear shrinkage being carried out. Curing was carried out at 25ºC and 65ºC for a period of 7 days. The results obtained demonstrate that the use of FGD improved the mechanical behavior of the AAT, due to the formation of phases different from alkali activated process of metakaolin alone. It is concluded that the application of AAT with FGD is viable, as the values obtained are compatible with the proposed application.

Alkali Activated Tiles (AAT) are eco-friendly materials that efficiently replace cementitious and ceramic materials. In this context, the objective of this work was to carry out the production of AAT using commercial metakaolin and flue gas desulfurization waste (FGD). The tiles were produced in the molar ratio SiO2/Al2O3=3.00, using a composition with 0, 10 and 20% substitution of metakaolin by FGD. Prismatic specimens were produced, with tests of tensile strength, mass density, water absorption and linear shrinkage being carried out. Curing was carried out at 25ºC and 65ºC for a period of 7 days. The results obtained demonstrate that the use of FGD improved the mechanical behavior of the AAT, due to the formation of phases different from alkali activated process of metakaolin alone. It is concluded that the application of AAT with FGD is viable, as the values obtained are compatible with the proposed application.

Keywords

Ceramics; Mechanical properties; Alkali activated tiles.

Ceramics; Mechanical properties; Alkali activated tiles.