Project/scholarship details
- Project/scholarship ID
74337
- Reference
PTDC/ECM/74337/2006
- FundRef URI
- Funder
FCT - Fundação para a Ciência e a Tecnologia, I.P.
- Funder's country
Portugal
- Funding program
5876-PPCDTI
- Funding amount
129,500.00 €
- Start date
2008-01-01
- End date
2011-09-30
Documents
Numerical model for CFRP confined concrete elements subject to monotonic and cy...
Varma, R. K.; Barros, Joaquim A. O.; Sena-Cruz, JoséUniaxial cyclic and monotonic compression tests were carried out on partially and fully wrapped concrete cylinders with Carbon Fibre Reinforced Polymer (CFRP) wet lay-up sheets. The influence of the concrete compressive strength, CFRP stiffness, geometric confinement arrangement and loading type on the compressive behaviour of reinforced concrete column elements of circular cross section up to their failure was...
Bond between concrete and multi-directional CFRP laminates
Sena-Cruz, José; Barros, Joaquim A. O.; Coelho, Mário Rui FreitasRecently, laminates of multi-directional carbon fiber reinforced polymers (MDL-CFRP) have been developed for Civil Engineering applications. A MDL-CFRP laminate has fibers in distinct directions that can be arranged in order to optimize stiffness and/or strength requisites. These laminates can be conceived in order to be fixed to structural elements with anchors, resulting high effective strengthening systems. ...
Bond behavior between glulam and GFRP’s using pullout bending tests
Jorge, Marco; Sena-Cruz, José; Branco, Jorge M.; Barros, Joaquim A. O.; Daufré, GláuciaCom o objectivo de avaliar o comportamento da ligação entre lamelados colados e varões de GFRP, quando aplicados de acordo com a técnica NSM, foi realizado um programa experimental composto por ensaios de arrancamento por flexão. Neste programa experimental foram analisadas três variáveis: o tipo de GFRP (2 tipos), a localização do FRP/dimensão da ranhura (2 tipos) e o comprimento de amarração (Lb=30 mm, 60 mm,...
Efficiency of different FRP-based flexural strengthening techniques in beams su...
Sena-Cruz, José; Barros, Joaquim A. O.; Coelho, Mário Rui Freitas; 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...
Estudo comparativo de diferentes técnicas no reforço à flexão de vigas de betão...
Coelho, Mário Rui Freitas; Silva, Luís; Sena-Cruz, José; Barros, Joaquim A. O.A aplicação de polímeros reforçados com fibras (FRP) no reforço à flexão de estruturas de betão armado (BA) tem sido realizada, essencialmente, com recurso às técnicas de colagem externa de mantas ou faixas de laminado (Externally Bonded Reinforcement – EBR) e de inserção de laminados ou varões no betão de recobrimento (Near-Surface Mounted – NSM). No âmbito do projeto em que este trabalho se insere pretende-se...
Experimental and numerical study of distinct techniques to strengthen beams fai...
Sena-Cruz, José; Barros, Joaquim A. O.; Coelho, Mário Rui Freitas; 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...
Seismic strengthening of beam-column joints with multi-directional CFRP laminates
Coelho, Mário Rui Freitas; Fernandes, Pedro Miguel Gomes; Sena-Cruz, José; Barros, Joaquim A. O.Technical Report 11-DEC/E-13; This work is supported by FEDER funds through the Operational Programme for Competitiveness Factors – COMPETE and National Funds through FCT – Portuguese Foundation for Science and Technology under the project PTDC/ECM/74337/2006. The authors acknowledge the materials generously supplied by Hilti Portugal - Produtos e Serviços Lda., S&P Clever Reinforcement Ibérica Lda. and SECIL.
Response of FRP-glulam slab systems under five-point bending load
Jorge, Marco; Branco, Jorge M.; Sena-Cruz, José; Barros, Joaquim A. O.; Dalfré, GláuciaFull-scale slab strips were tested in order to analyze the flexural response of FRP-glulam slab systems under monotonic loading. The type of strengthening technique (externally bonded reinforcement – EBR and near-surface mounted – NSM) and the increase target in terms of ultimate load capacity (20% and 40%) were the main studied parameters. GFRP sheets were utilized in the EBR technique, while GFRP rods were ap...
Efficiency of different techniques in seismic strengthening of RC beam-column j...
Coelho, Mário Rui Freitas; Fernandes, Pedro Miguel Gomes; Sena-Cruz, José; Barros, Joaquim A. O.In the last years several techniques have been proposed and used for the seismic strengthening of reinforced concrete (RC) beam-column joints using fiber reinforced polymers (FRP). The Near Surface Mounted (NSM) technique uses FRP bars or laminates inserted into grooves opened on the concrete cover and filled with epoxy adhesive. In the Mechanically Fastened and Externally Bonded Reinforcement (MF-EBR) techniqu...
Efficiency of different techniques in flexural strengthening of RC beams under ...
Sena-Cruz, José; Barros, Joaquim A. O.; Coelho, Mário Rui Freitas; 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...
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