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Experimental investigation on the composition, mechanical strength and self-cleaning ability of photocatalytic mortars

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Resumo:The self-cleaning ability of photocatalytic cement-based materials has the potential to preserve the esthetic appearance of building facades over time thus reducing cleaning costs. In the present work , the joint effect of several factors on the mechanical strength and self-cleaning ability of photocatalytic mortars was studied. For this purpose, four different mortar mixes containing two binder/sand ratios (1:3 and 1:4) were analyzed. Two mixes containing only Portland cement and the other two possessing 50% Portland cement and 50% aerial lime. For each mix, four different compositions were manufactured, each one with a different titanium dioxide-TiO2 content (0%, 2%, 4% and 6%). The results show that w/b increases with TiO2 which, in turn, leads to lower mechanical strength. Results also show that the mixes with 2% TiO2 had the highest self-cleaning effect.
Autores principais:Azevedo, N.
Outros Autores:Miraldo, S.; Abdollahnejad, Zahra; Pacheco-Torgal, F.; Aguiar, J. L. Barroso de
Assunto:Photocatalytic mortars Portland cement Aerial lime Self-cleaning ability Argamassas fotocatalíticas Cimento Portland Cal aérea Capacidade de auto-limpeza
Ano:2015
País:Portugal
Tipo de documento:comunicação em conferência
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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