Avaliação mecânica de concretos convencionais com diferentes consumos de água utilizando o método de dosagem da ABCP
Nenhuma miniatura disponível
Data
2023-06
Autores
Orientador
Mascolo, Rafael
Banca
Schmitz, Rebeca Jéssica
Mânica, Graciela
Título do periódico
ISSN
Título do Volume
Editor
Resumo
O método de dosagem de concretos da ABCP/ACI pode ser considerado como um método essencialmente empírico, pois o mesmo se baseia em tabelas e gráficos, de valores médios, que possibilita o desenvolvimento de um roteiro simples e rápido de entender, com uma sequência de passos, que evita a entrada em processos iterativos ou tentativos. Ao longo dos anos, trabalhos científicos têm sido desenvolvidos com o intuito de verificar se este método pode ser aplicado para diferentes materiais brasileiros fixando apenas características tabeladas. Buscando contribuir nessa linha de pesquisa, este estudo visa verificar se com o método de dosagem ABCP, fixando a relação a/c mas variando o consumo de água nos valores de 190 kg/m³, 195 kg/m³, 200 kg/m³, 210 kg/m³, 215 kg/m³ e 220 kg/m³ pode-se obter os abatimentos estabelecidos = e a resistência à compressão estipulada. Para atender o objetivo da pesquisa, foram realizados ensaios de caracterização dos materiais para produção dos concretos, dosagem dos concretos, realização de abatimento de cone no estado fresco, de resistência à compressão, tração por compressão diametral e absorção de água dos concretos no estado endurecido. Os resultados finais demonstram que há diferença no abatimento conforme se modifica o consumo de água utilizando o método da ABCP, e para os ensaios no estado endurecido dos concretos foi possível observar que à medida que aumentou o consumo de água se obteve valores menores de resistência, tanto à compressão quanto à tração por compressão diametral. E que também para nenhum traço estudado a resistência estimada no início do método foi atingida, ou seja, 25 MPa, obtendo valores inferiores. Não sendo possível para os materiais da região do Vale do Taquari atingir a resistência esperada. Para os resultados de absorção por capilaridade foi possível observar que conforme houve o aumento do consumo de água houve um aumento dos valores de absorção. De forma geral pode-se concluir que para os materiais empregados nesta pesquisa e os parâmetros adotados, o método de dosagem da ABCP não se mostrou eficiente para atingir a resistência estimada dos concretos.
The ABCP/ACI method of concrete dosing can be considered an essentially empirical method, as it is based on tables and graphs of average values, which enables the development of a simple and quick-to-understand script, with a sequence of steps, which avoids entering into iterative or tentative processes. Over the years, scientific papers have been presented with the aim of verifying whether it can be applied to different Brazilian materials, setting only tabulated characteristics. Seeking to contribute to this line of research, this study aims to verify whether the ABCP dosage method, fixing the w/c ratio but varying the water consumption in the values of 190 kg/m³, 195 kg/m³, 200 kg/m³, 210 kg /m³, 215 kg/m³ and 220 kg/m³ it is possible to obtain the slumps achieved by the method and the resistance to the resistance stipulated at the beginning of the method. To meet the objective of the research, characterization tests will be carried out on the materials for the production of concrete, dosage of concrete, realization of slump of the cone in the fresh state, resistance to overload, diametral traction and water absorption of the concrete in the weathered state. The final results showed that there is a difference in slump as the water consumption changes using the ABCP method, and for the tests in the resisted state of the concrete it was possible to observe that as the water consumption increased, lower values of resistance were obtained, to both compression and tension by diametral compression. Also, for none of the traits studied, the resistance reached at the beginning of the method was reached, that is, 25 MPa, obtaining lower values, making it impossible for the materials from the Vale do Taquari region to reach the expected resistance. For the results of capillarity absorption, it was possible to observe that as there was an increase in water consumption, there was an increase in the absorption values. In general, it can be concluded that for the materials used in this research and the parameters adopted, the ABCP dosing method was not efficient to reach the estimated resistance of the concretes.
The ABCP/ACI method of concrete dosing can be considered an essentially empirical method, as it is based on tables and graphs of average values, which enables the development of a simple and quick-to-understand script, with a sequence of steps, which avoids entering into iterative or tentative processes. Over the years, scientific papers have been presented with the aim of verifying whether it can be applied to different Brazilian materials, setting only tabulated characteristics. Seeking to contribute to this line of research, this study aims to verify whether the ABCP dosage method, fixing the w/c ratio but varying the water consumption in the values of 190 kg/m³, 195 kg/m³, 200 kg/m³, 210 kg /m³, 215 kg/m³ and 220 kg/m³ it is possible to obtain the slumps achieved by the method and the resistance to the resistance stipulated at the beginning of the method. To meet the objective of the research, characterization tests will be carried out on the materials for the production of concrete, dosage of concrete, realization of slump of the cone in the fresh state, resistance to overload, diametral traction and water absorption of the concrete in the weathered state. The final results showed that there is a difference in slump as the water consumption changes using the ABCP method, and for the tests in the resisted state of the concrete it was possible to observe that as the water consumption increased, lower values of resistance were obtained, to both compression and tension by diametral compression. Also, for none of the traits studied, the resistance reached at the beginning of the method was reached, that is, 25 MPa, obtaining lower values, making it impossible for the materials from the Vale do Taquari region to reach the expected resistance. For the results of capillarity absorption, it was possible to observe that as there was an increase in water consumption, there was an increase in the absorption values. In general, it can be concluded that for the materials used in this research and the parameters adopted, the ABCP dosing method was not efficient to reach the estimated resistance of the concretes.
Descrição
Palavras-chave
Dosagem; ABCP; Concreto; Dosage; ABCP; Concrete
Citação
CHIESA, Álisson Júnior Rosset. AVALIAÇÃO MECÂNICA DE CONCRETOS CONVENCIONAIS COM DIFERENTES CONSUMOS DE ÁGUA UTILIZANDO O MÉTODO DE DOSAGEM DA ABCP. 2023. Monografia (Graduação em Engenharia Civil) – Universidade do Vale do Taquari - Univates, Lajeado, 29 jun. 2023. Disponível em: http://hdl.handle.net/10737/3676.