Encontrados 5 documentos, a visualizar página 1 de 1
Efficiency of different techniques in flexural strengthening of RC beams under ...
Sena-Cruz, José; Barros, Joaquim A. O.; Coelho, Mário R. F.; Silva, Luís F. F. T.In the context of flexural strengthening of concrete structures, fiber reinforced polymers (FRP) have been used mostly by two main techniques: Externally Bonded Reinforcement (EBR) and Near-Surface Mounted (NSM). Both strengthening techniques are applied on the cover concrete, which is normally the weakest region of the element to be strengthened. Consequently, the most common problem is the premature failure o...
Efficiency of different FRP-based flexural strengthening techniques in beams su...
Sena-Cruz, José; Barros, Joaquim A. O.; Coelho, Mário R. F.; Silva, Luís F. F. T.Flexural strengthening of reinforced concrete (RC) structures with fiber reinforced polymers (FRP) has been used mostly by two main techniques: Externally Bonded Reinforcement (EBR) and Near-Surface Mounted (NSM). In both strengthening techniques the FRP systems are applied on the cover concrete, which is normally the weakest region of the element to be strengthened. Consequently, the most common problem is the...
Experimental and numerical study of distinct techniques to strengthen beams fai...
Sena-Cruz, José; Barros, Joaquim A. O.; Coelho, Mário R. F.; Silva, Luís F. F. T.With the purpose of study three distinct techniques to strengthen beams failing in bending under monotonic loading, an experimental program was carried out. Three techniques are analyzed: Externally Bonded Reinforcement (EBR), Near-Surface Mounted (NSM) and Mechanically Fastened and Externally Bonded Reinforcement (MF-EBR). Unidirectional CFRP laminates were used for the case of the EBR and NSM techniques, wher...
Eficiência de diferentes técnicas de reforço à flexão de vigas de betão armado
Sena-Cruz, José; Barros, Joaquim A. O.; Silva, Luís F. F. T.; Coelho, Mário R. F.A utilização de polímeros reforçados com fibras (FRP) no contexto do reforço de estruturas de Engenharia Civil tem crescido nas últimas décadas. Propriedades como baixo peso, elevado rácio rigidez/peso, imunidade e à corrosão e grande variedade de tamanhos e formatos disponíveis são algumas das razões que justificam a crescente utilização deste tipo de materiais. A sua aplicação tem sido realizada a essencialme...
Use of epoxy resins with incorporation of fillers for concrete rehabilitation
Silva, Luís F. F. T.; Oliveira, Madalena Prazeres Barbosa; Aguiar, J. L. Barroso deThe use of polymeric materials in civil construction makes possible original bonding processes because they have good adhesion. Among the polymeric materials, the epoxies are the most advantageous in the application for concrete rehabilitation. In this paper the bond between fresh/hardener concrete was made using epoxy resins in aqueous solution, because in previous tests they obtained the best results. This st...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||