Fatigue Behavior of RC Beams Strengthened with GFRP Sheets
Publication: Journal of Composites for Construction
Volume 5, Issue 4
Abstract
The objective of the presented study is to examine the effects of glass fiber reinforced polymer (GFRP) composite rehabilitation systems on the fatigue performance of reinforced concrete beams. Experiments were conducted on beams with and without GFRP composite sheets on their tensile surfaces. The specimens were 152 × 152 × 1,321 mm reinforced concrete beams with enough transverse reinforcement to avoid shear failure. The results of this study indicate that the fatigue life of reinforced concrete beams with the given geometry, subjected to the same cycling load, can be significantly extended through the use of externally bonded GFRP composite sheets. An interesting finding is that, although the fiber strengthening system increases the fatigue life of the beams, the failure mechanism, fatigue of the steel reinforcement, remains the same in both strengthened and nonstrengthened beams. Thus, it is possible to predict the fatigue life of a cyclically loaded beam using existing fatigue models.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 5 • Issue 4 • November 2001
Pages: 246 - 253
History
Received: Jun 2, 2000
Published online: Nov 1, 2001
Published in print: Nov 2001
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