A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Use of carbon fibre textile to control premature failure of reinforced concrete beams strengthened with bonded CFRP plates
This study examines the performance of rectangular simply supported reinforced concrete (RC) beams with externally bonded reinforcement (EBR) made of carbon fibre-reinforced polymer (CFRP) plates. The load-carrying capacity of these CFRP EBR beams can be influenced by the strengthening of their ends, which controls the premature end failure occurring when the anchorage length of the plates or the shear span/depth ratio are low. Different basic techniques are proposed to prevent this brittle failure: use of clamps at the ends of the beam, bonding of lateral perpendicular or inclined strips und U-wrapping of shear spans with carbon fibre textile. The debonding mode of failure has systematically taken the place of the concrete cover separation mode. Lateral bonding of CFRP strips and U-wrapping using carbon fibre textile are particularly efficient for the control of debonding cracks and delay the premature end failure of the beams. The load-carrying capacity is enhanced, and the ductility is increased.
Use of carbon fibre textile to control premature failure of reinforced concrete beams strengthened with bonded CFRP plates
This study examines the performance of rectangular simply supported reinforced concrete (RC) beams with externally bonded reinforcement (EBR) made of carbon fibre-reinforced polymer (CFRP) plates. The load-carrying capacity of these CFRP EBR beams can be influenced by the strengthening of their ends, which controls the premature end failure occurring when the anchorage length of the plates or the shear span/depth ratio are low. Different basic techniques are proposed to prevent this brittle failure: use of clamps at the ends of the beam, bonding of lateral perpendicular or inclined strips und U-wrapping of shear spans with carbon fibre textile. The debonding mode of failure has systematically taken the place of the concrete cover separation mode. Lateral bonding of CFRP strips and U-wrapping using carbon fibre textile are particularly efficient for the control of debonding cracks and delay the premature end failure of the beams. The load-carrying capacity is enhanced, and the ductility is increased.
Use of carbon fibre textile to control premature failure of reinforced concrete beams strengthened with bonded CFRP plates
Anwendung von Kohlenstoffaser-Textilien für die nachträgliche Verstärkung von Betonbalken mit einer äußeren Bewehrung mit Kohlenstoffaser-Kunststoff-Platten
Buyle-Bodin, F. (author) / David, E. (author)
Journal of Industrial Textiles ; 33 ; 145-157
2004
13 Seiten, 11 Bilder, 3 Tabellen, 19 Quellen
Article (Journal)
English
Concrete beams strengthened with externally bonded CFRP plates: performance in fatigue
| British Library Conference Proceedings | 1999
Debonding failure in CFRP flexurally strengthened reinforced concrete beams
| UB Braunschweig | 2005
Rheologic effects in reinforced concrete beams strengthened with CFRP-composite plates
| British Library Online Contents | 2006