Analysis of Concrete Behavior with Hybridization of Steel Fibers and Carbon Nanofibers
The present study shows an investigation on the mechanical behavior of the compressive strength in mixed fiber reinforced concretes in comparison with traditional concretes. A hybridization of carbon nanofibers (CNFs) in 1% by weight of cement mixed with steel fibers in 1% by weight of cement was ma...
| Autores: | , , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2019 |
| País: | España |
| Recursos: | Consejo General de la Arquitectura Técnica de España (CGATE) |
| Repositório: | RIARTE |
| OAI Identifier: | oai:www.riarte.es:20.500.12251/1605 |
| Acesso em linha: | http://hdl.handle.net/20.500.12251/1605 http://dx.doi.org/10.6036/9026 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Nanofibras Fibra de carbono Hormigón Fibra metálica Fibra de refuerzo Estructuras de hormigón armado Resistencia a compresión Conductividad térmica 3305.05 Tecnología del Hormigón 3313.04 Material de Construcción 3305.33 Resistencia de Estructuras 3305.32 Ingeniería de Estructuras 3312.08 Propiedades de Los Materiales 3312.09 Resistencia de Materiales 3312.12 Ensayo de Materiales |
| Resumo: | The present study shows an investigation on the mechanical behavior of the compressive strength in mixed fiber reinforced concretes in comparison with traditional concretes. A hybridization of carbon nanofibers (CNFs) in 1% by weight of cement mixed with steel fibers in 1% by weight of cement was made. The specimens were subjected to the compression rupture test to analyze the maximum rupture stress, the maximum deformation and the deformation energy density and contrast the results with a concrete without additions. The thermal conductivity test and scanning electron microscopy (SEM) were also performed. The results show that concrete with hybridization of steel fibers and carbon nanofibers, in percentages of 1% by weight of cement of each fiber, achieves slightly higher average compressive stresses than non-added concrete, but loses ductility once the maximum stress is reached. The thermal conductivity in fiber-hybridized concrete is similar to that of fiberless concrete, not producing the improvement that could be expected by adding fibers from materials with high thermal conductivity. |
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