Loading...
Publication
Estudo de Aproveitamento de Resíduos do Processo de Fabricação de Pás Eólicas Aplicadas ao Betão
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 2.53 MB | Adobe PDF |
Authors
Abstract(s)
Atualmente existe uma tendência de mercado que conduz a um apelo, dentro das organizações,
para a utilização de conceitos sustentáveis, equilibrando a aplicação do conceito com a redução da
despesa financeira para destino de subprodutos e ainda, se houver a possibilidade, gerar riqueza a
partir desses.
Pretendeu-se dar contribuições para a área de estudo do uso do betão experimental com a
incorporação de pó de polímero/vidro como resíduo, em substituição ao agregado fino (Areia 1) com
o objetivo de analisar os efeitos da adição de pó rico em fibra de vidro impregnado com resina curada
(subproduto) a uma formulação de betão, e, deste modo, aferir a viabilidade do aproveitamento desse
pó.
O pó de polímero/vidro obtido neste estudo, é resultado do processo de maquinação de root
de pás eólicas pela empresa Siemens Gamesa Renewable Energy, localizada em Oliveira de Frades,
após o processo de maquinação.
A metodologia adotada para este trabalho foram ensaios no betão em estado fresco e
endurecido, com a incorporação do pó de polímero/vidro no betão com taxas de 20%, 50% e 100%,
e realizando-se uma análise comparativa entre o betão convencional e o betão com a incorporação
destes resíduos.
O pó de polímero/vidro utilizado neste estudo pode ter a sua utilização viabilizada, porém
obriga a mais estudos e ensaios. A premissa inicial deste estudo tratava-se de verificar o
comportamento da resistência do betão experimental, uma vez que, com a substituição de um inerte
pelo pó de polímero/vidro já era sabido que a tendência seria de redução. Hipótese que foi
confirmada, uma vez que o aumento das taxas de incorporação, a níveis de BT-Pó 20%, BT-Pó 50%
e BT-Pó 100% demonstraram que a resistência do betão foi inferior ao convencional.
Neste estudo, foi realizado outros ensaios além dos de resistência. Verificou-se o
comportamento do betão no estado fresco, com a realização de ensaios para analise de absorção por
capilaridade e imersão e, também o ensaio de abaixamento das amassaduras nas proporções supra citadas. Constata-se que a incorporação de resíduos no betão conduz a uma perda de trabalhabilidade
quando comparado com o betão convencional, e quanto maior a taxa de incorporação do resíduo
menor a trabalhabilidade, demonstrando que a eficácia desta prática, depende da seleção cuidadosa
de resíduos e das quantidades corretas adicionadas à mistura.
Currently there is a market trend that leads to a call, within organizations, for the use of sustainable concepts, balancing the application of the concept with the reduction of financial expenses for the disposal of by-products and, if possible, generating wealth from these. The aim was to make contributions to the study area of the use of experimental concrete with the incorporation of polymer/glass powder as residue, replacing fine aggregate (Sand 1) with the aim of analyzing the effects of adding fiberglass-rich powder impregnated with cured resin (by-product) to a concrete formulation, and, in this way, assessing the feasibility of using this powder. The methodology adopted for this work was testing on fresh and hardened concrete, with the incorporation of polymer/glass powder into the concrete at rates of 20%, 50% and 100%, and carrying out a comparative analysis between conventional concrete and concrete with the incorporation of these residues. The polymer/glass powder used in this study may be able to be used, but it requires further studies and tests. The initial premise of this study was to verify the resistance behavior of experimental concrete, since, with the replacement of an inert material with polymer/glass powder, it was already known that the tendency would be to reduce. Hypothesis that was confirmed, since the increase in incorporation rates, at levels of BT-Pó 20%, BT-Pó 50% and BT-Pó 100% demonstrated that the concrete's resistance was lower than conventional. In this study, other tests were carried out in addition to resistance tests. The behavior of the concrete in the fresh state was verified, with tests carried out to analyze absorption by capillarity and immersion and the test to reduce the mixing in the proportions mentioned above. It appears that the incorporation of waste into concrete leads to a loss of workability when compared to conventional concrete, and the higher the waste incorporation rate, the lower the workability, demonstrating that the effectiveness of this practice depends on the careful selection of waste and the correct quantities added to the mix.
Currently there is a market trend that leads to a call, within organizations, for the use of sustainable concepts, balancing the application of the concept with the reduction of financial expenses for the disposal of by-products and, if possible, generating wealth from these. The aim was to make contributions to the study area of the use of experimental concrete with the incorporation of polymer/glass powder as residue, replacing fine aggregate (Sand 1) with the aim of analyzing the effects of adding fiberglass-rich powder impregnated with cured resin (by-product) to a concrete formulation, and, in this way, assessing the feasibility of using this powder. The methodology adopted for this work was testing on fresh and hardened concrete, with the incorporation of polymer/glass powder into the concrete at rates of 20%, 50% and 100%, and carrying out a comparative analysis between conventional concrete and concrete with the incorporation of these residues. The polymer/glass powder used in this study may be able to be used, but it requires further studies and tests. The initial premise of this study was to verify the resistance behavior of experimental concrete, since, with the replacement of an inert material with polymer/glass powder, it was already known that the tendency would be to reduce. Hypothesis that was confirmed, since the increase in incorporation rates, at levels of BT-Pó 20%, BT-Pó 50% and BT-Pó 100% demonstrated that the concrete's resistance was lower than conventional. In this study, other tests were carried out in addition to resistance tests. The behavior of the concrete in the fresh state was verified, with tests carried out to analyze absorption by capillarity and immersion and the test to reduce the mixing in the proportions mentioned above. It appears that the incorporation of waste into concrete leads to a loss of workability when compared to conventional concrete, and the higher the waste incorporation rate, the lower the workability, demonstrating that the effectiveness of this practice depends on the careful selection of waste and the correct quantities added to the mix.
Description
Keywords
Sustentabilidade Resíduos Betão Pó de Vidro Concrete Glass Powder Waste Sustainability