Abstract
The use of Portland cement occurs on a large scale in civil construction. However, its use causes a great environmental impact by emitting a high level of carbon dioxide in the atmosphere. An eco-friendly alternative is the development of alkali activated materials (AAM), as it is not necessary to calcine the precursor materials for use and because they have a high gain of initial mechanical strength. Furthermore, it is possible to value industrial wastes rich in silica and alumina in the compositions of AAM such as ceramic waste (CW), in addition to making use of reactive materials such as metakaolin (MK). This work shows the results achieved in microstructural and compressive strength tests. The aim was to optimize the dosage in pastes with different compositions between precursor materials and activator solution. Research results indicate the effectiveness of replacing 30% MK with CW when compared to a paste composed of 100% MK.
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Acknowledgements
This research was funded by the State University of the Northern Fluminense (UENF), partially financed by CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brazil), CNPq (Coordenação Nacional de Pesquisa) and FAPERJ (Fundação de Apoio a Pesquisa do Estado do Rio de Janeiro). The participation of A.R.G.A. was sponsored by FAPERJ through the research fellowships proc.no: E-26/210.150/2019, E-26/211.194/2021, E-26/211.293/2021, E-26/201.310/2021 and by CNPq PQ2 307592/2021-9.
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Marques Junior, A.L. et al. (2023). Activating Components in Activated Alkali Paste of Metakaolin and Ceramic Waste. In: Zhang, M., et al. Characterization of Minerals, Metals, and Materials 2023. TMS 2023. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-22576-5_21
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