Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Behavior of concrete beams strengthened with fiber-reinforced polymer laminates under impact loading
Most of the research on application of composite materials in civil engineering has concentrated on the behavior of structural elements under static loads. In engineering practice, there are many situations in which structures undergo impact or dynamic loading. This paper presents the results of an experimental investigation conducted to study the impact effects on concrete beams strengthened with fiber-reinforced polymer laminates. Two types of composite laminates, carbon and Kevlar, were bonded to the top and bottom faces of concrete beams with epoxy. The following conclusions can be drawn: Composite laminates significantly increased the capacity of concrete beams to resist impact loading and reduced the maximum deflection. The gain in capacity depends on the type, thickness, weight, and strength of the composite laminates. Dynamic response induced by impact loading needs to be taken into account, since the strain produced by the inertia force is large enough to crack the concrete. Reaction force of the beam varied with the thickness and weight of the laminate for the same impact energy. The stiffer carbon laminate reduced the deflection. Epoxy bonded composite laminates can effectively decrease the width and number of cracks under impact loading. Composite laminates can also increase the shear strength of the beam by preventing widening of cracks.
Behavior of concrete beams strengthened with fiber-reinforced polymer laminates under impact loading
Most of the research on application of composite materials in civil engineering has concentrated on the behavior of structural elements under static loads. In engineering practice, there are many situations in which structures undergo impact or dynamic loading. This paper presents the results of an experimental investigation conducted to study the impact effects on concrete beams strengthened with fiber-reinforced polymer laminates. Two types of composite laminates, carbon and Kevlar, were bonded to the top and bottom faces of concrete beams with epoxy. The following conclusions can be drawn: Composite laminates significantly increased the capacity of concrete beams to resist impact loading and reduced the maximum deflection. The gain in capacity depends on the type, thickness, weight, and strength of the composite laminates. Dynamic response induced by impact loading needs to be taken into account, since the strain produced by the inertia force is large enough to crack the concrete. Reaction force of the beam varied with the thickness and weight of the laminate for the same impact energy. The stiffer carbon laminate reduced the deflection. Epoxy bonded composite laminates can effectively decrease the width and number of cracks under impact loading. Composite laminates can also increase the shear strength of the beam by preventing widening of cracks.
Behavior of concrete beams strengthened with fiber-reinforced polymer laminates under impact loading
Verhalten von mit faserverstärkten Kunststofflaminaten verstärkten Betonträgern bei Schlagbeanspruchung
Tang, T. (Autor:in) / Saadatmanesh, H. (Autor:in)
Journal of Composites for Construction ; 7 ; 209-218
2003
10 Seiten, 16 Bilder, 5 Tabellen, 6 Quellen
Aufsatz (Zeitschrift)
Englisch
Träger (Bauwesen) , Beton , Verstärkung (Festigkeit) , Laminieren (Mehrschichtstoff) , faserverstärkter Kunststoff , Aramidfaser , carbonfaserverstärkter Kunststoff , Schlagbeanspruchung , Durchbiegung , Epoxidharz , elastische Schwingung , Biegeschwingung , Schwingungsprüfung , Rissbildung , Scherfestigkeit , Kleben (Verbinden)
Behavior of Concrete Beams Strengthened with Fiber-Reinforced Polymer Laminates under Impact Loading
| British Library Online Contents | 2003
Behavior of Concrete Beams Strengthened with Fiber-Reinforced Polymer Laminates under Impact Loading
| Online Contents | 2003
| British Library Conference Proceedings | 1998
| British Library Online Contents | 2004