Uso de lama residual de concreto como substituto da cal hidratada para produção de argamassas de revestimento
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Data
2019-09-20
Título da Revista
ISSN da Revista
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Editor
Universidade Federal de Goiás
Resumo
Civil construction has been recognized as an activity responsible for major
environmental degradation. Therefore, greater sustainability in this sector of the
economy can be improved by adopting “clean technologies” to minimize environmental
impacts in terms of waste generation and energy and material consumption. Still little
studied, the use of concrete sludge waste (CSW) as an alternative material for the
production of mortars can be a viable alternative. The purpose of this study is to evaluate
the mechanical performance of mortars produced with dry sludge as a total and partial
substitute for hydrated lime, evaluating its behavior through tests of consistency, flexural
strength and compression, water absorption by capillarity and density. In the fresh state,
it was found that the use of CSW has a negative impact on the workability of mortars,
especially for replacement rates above 75% by mass. On the other hand, the substitution
of hydrated lime, up to 50% by mass, is feasible, presenting mechanical properties
equivalent to the mix taken as reference.
Descrição
Palavras-chave
Lama residual de concreto, Usina dosadora de concreto, Argamassa, Cal hidratada, Resíduo cimentício, Concrete sludge waste, Concrete batching plants, Mortar, Hydrated lime, Cementitious waste
Citação
CARVALHO, Igor Mazon; BONFIM, Walter Batista; PAULA, Heber Martins de. Uso de lama residual de concreto como substituto da cal hidratada para produção de argamassas de revestimento. Revista Eletrônica de Engenharia Civil, Goiânia, v. 15, n. 2, p. 75–87, 2019. Disponível em:https://www.revistas.ufg.br/reec/article/view/59249.