Concrete-Filled FRP Tubes: Manufacture and Testing of New Forms Designed for Improved Performance
Publication: Journal of Composites for Construction
Volume 17, Issue 2
Abstract
This paper reports on the development and testing of three new concrete-filled fiber-reinforced polymer (FRP) tube (CFFT) systems. These CFFT systems were designed to enhance the effectiveness of square and rectangular FRP tubes in confining concrete. In the design of the rectangular CFFTs two different enhancement techniques were considered; namely, corner strengthening and provision of an internal FRP panel. The technique used in the development of the square CFFT system involved the incorporation of four internal concrete-filled FRP cylinders as an integral part of the CFFT. The performance of these systems was investigated experimentally through axial compression tests of 10 unique CFFTs. The results of the experimental study indicate that the new CFFT systems presented in this paper offer significantly improved performance relative to conventional CFFTs with similar material and geometric properties. Examination of the test results have led to a number of significant conclusions with respect to the confinement effectiveness of each new CFFT system. These results are presented and a discussion is provided on the parameters that influenced the compressive behavior of these CFFT systems.
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Acknowledgments
The author thanks Ms. Sadri and Messrs. Haigh, Kohler, and Richter, who have undertaken the tests reported in this paper as part of their undergraduate theses. This research is part of an ongoing program at the University of Adelaide on FRP-concrete composite columns.
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Published In
Journal of Composites for Construction
Volume 17 • Issue 2 • April 2013
Pages: 280 - 291
Copyright
© 2013 American Society of Civil Engineers.
History
Received: May 30, 2012
Accepted: Sep 18, 2012
Published online: Sep 20, 2012
Published in print: Apr 1, 2013
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