A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Long-term deflections of reinforced concrete beams externally bonded with FRP system
External bonding of fiber-reinforced polymer (FRP) composite laminates to the tension soffit of reinforced concrete beams has become a popular method for flexural strengthening. However, the long-term performance of FRP-bonded beams under service loads is still a concern. This study was therefore aimed at investigating, both analytically and experimentally, the long-term deflection characteristics of FRP-bonded beams under sustained loads. Nine reinforced concrete beams, six of which were externally bonded with glass FRP composite laminates, were subjected to sustained loads for 2 years. The test parameters were the FRP ratio and sustained load level. The long-term deflections of the beams were reduced 23 and 33 % with a FRP ratio of 0.64 and 1.92 %, respectively. The total beam deflections were accurately predicted by the adjusted effective modulus method, and overestimated by about 20 % by the effective modulus method.
Long-term deflections of reinforced concrete beams externally bonded with FRP system
External bonding of fiber-reinforced polymer (FRP) composite laminates to the tension soffit of reinforced concrete beams has become a popular method for flexural strengthening. However, the long-term performance of FRP-bonded beams under service loads is still a concern. This study was therefore aimed at investigating, both analytically and experimentally, the long-term deflection characteristics of FRP-bonded beams under sustained loads. Nine reinforced concrete beams, six of which were externally bonded with glass FRP composite laminates, were subjected to sustained loads for 2 years. The test parameters were the FRP ratio and sustained load level. The long-term deflections of the beams were reduced 23 and 33 % with a FRP ratio of 0.64 and 1.92 %, respectively. The total beam deflections were accurately predicted by the adjusted effective modulus method, and overestimated by about 20 % by the effective modulus method.
Long-term deflections of reinforced concrete beams externally bonded with FRP system
Langzeitdurchbiegungen von mit einem FRP-System äußerlich verbundenen Stahlbetonträgern
Tan, Kiang Hwee (author) / Saha, Mithun Kumar (author)
Journal of Composites for Construction ; 10 ; 474-482
2006
9 Seiten, 8 Bilder, 3 Tabellen, 15 Quellen
Article (Journal)
English
Long-Term Deflections of Reinforced Concrete Beams Externally Bonded with FRP System
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