Viabilidade técnica de água de chuva coletada de telhados para uso nos processos de preparo do concreto
Water is an increasingly scarce natural resource because of its unrestricted use and the pollution of water sources. In this way, one must think of more rational alternatives of use aiming at sustainability, to guarantee this resource to the next generations. Research on sustainable use of water inv...
| Autor principal: | Costa, Jamy Oliveira |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/6410 |
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| Resumo: |
Water is an increasingly scarce natural resource because of its unrestricted use and the pollution of water sources. In this way, one must think of more rational alternatives of use aiming at sustainability, to guarantee this resource to the next generations. Research on sustainable use of water investigates the use of rainwater, mainly for non-drinkable uses, as it is an inexpensive way to obtain water. In this context there is a demand for water in building construction for many uses, such as mortars and concrete. For water to be used in the production of mortars and concrete it must meet the requirements of NBR 15900: 2009. In this work, water collected from metallic and ceramic roofs, treated underground water and distilled water were compared to evaluate the technical viability of the use of these waters in civil construction. After the analysis, all the rainwater collected from roofs met the requirements of the standard, reaching at least 90% of the resistance of mortars made with distilled water. The specimens made with water obtained from ceramic roof showed resistance in 28 days curing, of 112.7% in relation to those made with distilled water, probably due to the higher presence of alkaline compounds, which accelerate the cement hydration process, ensuring initial resistance, but not sustaining this resistance over the years. However, metallic roof water was closer to the results of distilled water, with a 95.7% resistance. All analyzed waters met the requirements of the standard and can be applied in the mortar and concrete preparation processes, periodically resistance analyzes to guarantee the reliability of the water. |
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