Evaluation of self-cleaning lime mortars containing titanium dioxide (TiO2) and metakaolin.
DOI:
https://doi.org/10.21041/ra.v16i2.851Keywords:
lime mortar, titanium dioxide, photocatalysis, building materialsAbstract
This study evaluated the performance of lime mortars modified with titanium dioxide (TiO₂) and metakaolin (MK), with emphasis on compressive strength and self-cleaning capacity. Six different formulations were prepared and tested for consistency, mechanical strength, and color variation after exposure to natural weathering. The results indicated that TiO₂ improved both self-cleaning performance and compressive strength, with a statistically significant effect on color variation (ΔE). The presence of MK had no immediate effect on strength within the evaluation period. The originality of the study lies in the combined assessment of TiO₂ and MK in lime mortars exposed to different microclimatic
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Aggelakopoulou, E., Bakolas, A., Moropoulou, A. (2011), Properties of lime–metakolin mortars for the restoration of historic masonries. Applied Clay Science. v. 53, n. 1, p. 15-19. http://dx.doi.org/10.1016/j.clay.2011.04.005. DOI: https://doi.org/10.1016/j.clay.2011.04.005
Associação Brasileira De Normas Técnicas. (1996). NBR 7215: Cimento Portland - Determinação da resistência à compressão. Rio de Janeiro.
Associação Brasileira De Normas Técnicas. (2005), NBR 13279: Argamassa para assentamento e revestimento de paredes e tetos – Determinação da resistência à tração na flexão e à compressão. Rio de Janeiro.
Associação Brasileira De Normas Técnicas. (2016). NBR 13276: Argamassa para assentamento e revestimento de paredes e tetos – Determinação do índice de consistência. Rio de Janeiro.
Austria, G. C. (2015), “Argamassa autolimpante para revestimento de fachadas: o efeito das propriedades fotocatalíticas do dióxido de titânio (TiO2)”, Dissertação de Mestrado, Universidade Federal do Rio Grande do Sul, p. 173.
Bersch, J. D. (2021), “Atividades fotocatalítica e autolimpeza de argamassas pigmentadas contendo dióxido de titânio (TiO2)”, Dissertação de Mestrado, Universidade Federal do Rio Grande do Sul, p. 325.
Bhagyamma, G., Panchangam, S. C., Rao H, S. (2023), Development of self-cleaning cement mortar exposed to indoor and outdoor environment. Materials Today: Proceedings. p. 1-7. https://doi.org/10.1016/j.matpr.2023.04.215. DOI: https://doi.org/10.1016/j.matpr.2023.04.215
Cruz, J. S., Oliveira, F. M. C., Carneiro, A. M. P. (2019). “A relação entre a resistência mecânica à compressão, o coeficiente de capilaridade, e a variação de massa das argamassas mistas de cal e metacaulim” em: XIII Simpósio Brasileiro De Tecnologia Das Argamassas, Goiânia (Brasil), pp. 812-821.
Daniyal, M., Akhtar, S., Azam, A. (2019), Effect of nano-TiO2 on the properties of cementitious composites under different exposure environments. Journal Of Materials Research and Technology. v. 8, n. 6, p. 6158-6172. https://doi.org/10.1016/j.jmrt.2019.10.010. DOI: https://doi.org/10.1016/j.jmrt.2019.10.010
Gutiérrez, R. M., Villaquirán-Caicedo, M. A., Guzmán-Aponte, L. A. (2020), Alkali-activated metakaolin mortars using glass waste as fine aggregate: mechanical and photocatalytic properties. Construction And Building Materials. v. 235, p. 117510. https://doi.org/10.1016/j.conbuildmat.2019.117510. DOI: https://doi.org/10.1016/j.conbuildmat.2019.117510
Hatori, A., Giordani, C., Casarin, R. P., Guerra, F. L., Masuero, A. B. (2023). “Avaliação das propriedades mecânicas e de absorção de água de argamassas com adição de dióxido de titânio” em: XIV Simpósio Brasileiro De Tecnologia Das Argamassas, João Pessoa (Brasil), pp. 1-9. DOI: https://doi.org/10.46421/sbta.v14.2816
IBGE (1). Cidades e estados. Disponível em: https://www.ibge.gov.br/cidades-e-estados/rs/canoas.html. 2022. Acesso em: 02 dez. 2024.
IBGE (2). Cidades e estados. Disponível em: https://www.ibge.gov.br/cidades-e-estados/rs/montauri.html. 2022. Acesso em: 02 dez. 2024.
IBGE. Mapas físicos dos estados. Disponível em: https://www.ibge.gov.br/geociencias/cartas-e-mapas/mapas-estaduais/15977-mapas-fisicos-dos-estados.html?edicao=16197&t=downloads. 2010. Acesso em: 01 dez. 2024.
Lara, R. C., Xavier, G. C.; Canela, M. C., Carvalho, J. A., Alexandre, J., Azevedo, A. R. G. (2023), Characterization and photocatalytic performance of cement mortars with incorporation of TiO2 and mineral admixtures. Environmental Science and Pollution Research. v. 30, n. 42, p. 95537-95549. https://doi.org/10.1007/s11356-023-29084-6. DOI: https://doi.org/10.1007/s11356-023-29084-6
Mattos, F. C., Gonçalves, M. R. F. (2019), Argamassas de cal e metacaulim: influência das condições de cura. Matéria (Rio de Janeiro). v. 24, n. 4, p. 1-10. https://doi.org/10.1590/S1517-707620190004.0857. DOI: https://doi.org/10.1590/s1517-707620190004.0857
Pozo-Antonio, J. S., Dionísio, A. (2017), Self-cleaning property of mortars with TiO2 addition using real diesel exhaust soot. Journal Of Cleaner Production. v. 161, p. 850-859. https://doi.org/10.1016/j.jclepro.2017.05.202. DOI: https://doi.org/10.1016/j.jclepro.2017.05.202
Ramadan, M., Kohail, M., Abadel, A. A., Alharbi, Y. R., Soliman, A. M., Mohsen, A. (2023), Exploration of mechanical performance, porous structure, and self-cleaning behavior for hydrothermally cured sustainable cementitious composites containing de-aluminated metakaolin waste and TiO2 nanoparticles. Journal Of Materials Research and Technology. v. 25, p. 3998-4019. https://doi.org/10.1016/j.jmrt.2023.06.224. DOI: https://doi.org/10.1016/j.jmrt.2023.06.224
Saeli, M., Tobaldi, D. M., Rozman, N.; Skapin, A. S., Labrincha, J. A., Pullar, R. C. (2017), Photocatalytic nano-composite architectural lime mortar for degradation of urban pollutants under solar and visible (interior) light. Construction And Building Materials. v. 152, p. 206-213. http://dx.doi.org/10.1016/j.conbuildmat.2017.06.167 DOI: https://doi.org/10.1016/j.conbuildmat.2017.06.167
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