Análise comparativa entre os métodos EBR (Externally Bonded Reinforcement) e NSM (Near Surface Mounted) para aplicação de CFRP (Carbon Fiber – Reinforced Polymer) como reforço em vigas de concreto armado
Nenhuma Miniatura disponível
Data
2022-12-07
Tipo de documento
Artigo Científico
Título da Revista
ISSN da Revista
Título de Volume
Área do conhecimento
Engenharias
Modalidade de acesso
Acesso fechado
Editora
Autores
Cunha, Fernanda Gomes da
Santos, Guilherme Alves
Santos, João Marcos Nunes
Silva, Nayara Aparecida Ferreira da
Orientador
Volpini, Estevão Xavier
Coorientador
Sales, Caroline Pessoa
Resumo
Por conta da crescente demanda de reforços estruturais, tornou-se então necessário o estudo de métodos que tornem todo esse processo mais prático, mas que também contribuam no acréscimo de capacidade de carga das estruturas. Com base nessa problemática, esse artigo busca apresentar o uso do CRFP (Carbon Fiber–Reinforced Polymer) em duas técnicas, sendo tais como EBR (Externally Bonded Reinforcement), que visa a inserção da fibra de modo externo e NSM (Near Surface Mounted), que faz o uso interno. Cada sistema será analisado mediante viés executivo, técnico e econômico. Sendo assim, a partir dos dados coletados por meio de levantamento bibliográfico foi realizada uma análise a fim de apurar a fibra de carbono, assim como o seu comportamento e aplicação. Em seguida, houve um estudo do método executivo e resultados de ensaios de capacidade de carga à flexão de ambas as técnicas supracitadas. Além disso, será exposto o motivo da técnica EBR ser mais empregada no Brasil do que a técnica NSM, visto que a mesma apresenta um melhor desempenho. Portanto, diante destes aspectos, juntamente com os estudos posteriores foi realizado uma pesquisa orçamentária com algumas empresas especializadas, que possui o intuito de entender qual dos sistemas possui o melhor custo-benefício.
Due to the growing demand for structural reinforcements, it became necessary to study methods that make this whole process more practical, but also contribute to increasing the load capacity of structures. Based on this issue, this article seeks to present the use of CRFP (Carbon Fiber–Reinforced Polymer) in two techniques, namely the EBR (Externally Bonded Reinforcement), which aims to insert the fiber externally, and the NSM (Near Surface Mounted), which makes indoor use. Each system will be analyzed from an executive, technical and economic perspective. Therefore, based on the data collected through a bibliographical survey, an analysis was carried out to investigate the carbon fiber, as well as its behavior and application. Then, there was a study of the executive method and results of tests of load capacity to bending of the both above mentioned techniques. In addition, the reason for the EBR technique to be more used in Brazil than the NSM technique will be exposed, since it presents a better performance. Therefore, in view of these aspects, a budget survey was executed with some specialized companies, which purpose to understand which of the systems has the best costbenefit ratio.
Due to the growing demand for structural reinforcements, it became necessary to study methods that make this whole process more practical, but also contribute to increasing the load capacity of structures. Based on this issue, this article seeks to present the use of CRFP (Carbon Fiber–Reinforced Polymer) in two techniques, namely the EBR (Externally Bonded Reinforcement), which aims to insert the fiber externally, and the NSM (Near Surface Mounted), which makes indoor use. Each system will be analyzed from an executive, technical and economic perspective. Therefore, based on the data collected through a bibliographical survey, an analysis was carried out to investigate the carbon fiber, as well as its behavior and application. Then, there was a study of the executive method and results of tests of load capacity to bending of the both above mentioned techniques. In addition, the reason for the EBR technique to be more used in Brazil than the NSM technique will be exposed, since it presents a better performance. Therefore, in view of these aspects, a budget survey was executed with some specialized companies, which purpose to understand which of the systems has the best costbenefit ratio.
Palavras-chave
Reforços estruturais, Fibra de Carbono, Carbon fiber–reinforced polymer, Externally bonded reinforcement, Near surface mounted