Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Investigation of bond in concrete structures strengthened with near surface mounted carbon fiber reinforced polymer strips
Use of near surface mounted FRP rods and strips can preclude delamination-type failures, frequently observed by using externally bonded reinforcement. This paper presents both experimental and analytical investigations undertaken to evaluate bond characteristics of near surface mounted carbon FRP (CFRP) strips. A total of nine concrete beams, strengthened with near surface mounted CFRP strips were constructed and tested under monotonic static loading. Mounting the strip consists of cutting the groove, filling the groove with epoxy, and inserting the CFRP strip inside the groove. Based on the findings of this investigation, the following conclusions can be drawn. The use of near surface mounted CFRP strips is effective for strengthening/repair of concrete structures; Use of near surface mounted CFRP strips substantially increases both stiffness and strength of concrete beams. The ultimate load carrying capacity of the beams can be increased by as much as 53 % for the specimens used in this program. Groove dimensions of 5 mm wide by 25 mm deep were adequate to prevent splitting of the epoxy cover; The proposed analytical model is capable of predicting the interfacial shear stress distribution, ultimate load carrying capacity, and mode of failure of concrete beams strengthened with near surface mounted CFRP strips. Debonding loads increase by increasing the embedment length of CFRP strips, concrete compressive strength, and/or groove width.
Investigation of bond in concrete structures strengthened with near surface mounted carbon fiber reinforced polymer strips
Use of near surface mounted FRP rods and strips can preclude delamination-type failures, frequently observed by using externally bonded reinforcement. This paper presents both experimental and analytical investigations undertaken to evaluate bond characteristics of near surface mounted carbon FRP (CFRP) strips. A total of nine concrete beams, strengthened with near surface mounted CFRP strips were constructed and tested under monotonic static loading. Mounting the strip consists of cutting the groove, filling the groove with epoxy, and inserting the CFRP strip inside the groove. Based on the findings of this investigation, the following conclusions can be drawn. The use of near surface mounted CFRP strips is effective for strengthening/repair of concrete structures; Use of near surface mounted CFRP strips substantially increases both stiffness and strength of concrete beams. The ultimate load carrying capacity of the beams can be increased by as much as 53 % for the specimens used in this program. Groove dimensions of 5 mm wide by 25 mm deep were adequate to prevent splitting of the epoxy cover; The proposed analytical model is capable of predicting the interfacial shear stress distribution, ultimate load carrying capacity, and mode of failure of concrete beams strengthened with near surface mounted CFRP strips. Debonding loads increase by increasing the embedment length of CFRP strips, concrete compressive strength, and/or groove width.
Investigation of bond in concrete structures strengthened with near surface mounted carbon fiber reinforced polymer strips
Untersuchung der Bindung in Betonbauteilen - verstärkt durch in Oberflächennähe montierte, carbonfaserverstärkte Kunststoffbänder
Hassan, T. (Autor:in) / Rizkalla, S. (Autor:in)
Journal of Composites for Construction ; 7 ; 248-257
2003
10 Seiten, 16 Bilder, 1 Tabelle, 21 Quellen
Aufsatz (Zeitschrift)
Englisch
| British Library Online Contents | 2003
Bond Between Near-Surface Mounted Carbon-Fiber-Reinforced Polymer Laminate Strips and Concrete
| British Library Online Contents | 2004
Bond Between Near-Surface Mounted Carbon-Fiber-Reinforced Polymer Laminate Strips and Concrete
| Online Contents | 2004
Bond between near-surface mounted carbon-fiber-reinforced polymer laminate strips and concrete
| BASE | 2004