Concrete Beams Exposed to Live Loading during Carbon Fiber Reinforced Polymer Strengthening
Publication: Journal of Composites for Construction
Volume 9, Issue 2
Abstract
The need for structural rehabilitation of concrete structures all over the world is well known. Extensive amounts of research have been carried out and are ongoing in this field. Most of the laboratory research has been undertaken on structural elements without live load during the strengthening process. Normally owners of structures want to continue their activity or service during strengthening. Full-scale applications have shown that this is possible, but there is a lack of understanding as to how cyclic loads are distributed during strengthening; for example, traffic loads affect the final strengthening result. This paper presents laboratory tests on concrete beams strengthened with carbon fiber-reinforced polymer laminates and near-surface mounted reinforcement. The beams were subjected to a cyclic load during setting of the adhesive, and after additional hardening were then loaded by deformation control up to failure.
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Acknowledgments
For help with the laboratory tests, special attention should be given to Håkan Johansson and Georg Danielsson at TESTLAB, Luleå University of Technology. The assistance of Professor Lennart Elfgren is also greatly appreciated. BPE Systems AB has been helpful in providing material properties and expertise in strengthening systems. The Development Fund of the Swedish Construction Industry, SBUF, and the Swedish Road Authorities provided financial support for the tests. Last but not least, the MSc student Otto Norling should be thanked for his never-ending energy in working with this project.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 9 • Issue 2 • April 2005
Pages: 178 - 186
Copyright
© 2005 ASCE.
History
Received: Apr 16, 2003
Accepted: Jul 29, 2003
Published online: Apr 1, 2005
Published in print: Apr 2005
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