Effect of Beam Depth on Shear Behavior of FRP RC Beams
Publication: Journal of Composites for Construction
Volume 23, Issue 1
Abstract
The behavior of shear critical fiber-reinforced-polymer (FRP) RC elements is characterized by the development of comparatively large strains and crack widths, which can be strongly influenced by their relative geometrical size. This paper investigates experimentally the size effect on the shear behavior of FRP RC beams with and without shear reinforcement and with overall depth varying from 260 to 460 mm. The results confirm a considerable size effect for members without shear reinforcement, with an average reduction in normalized shear strength of about 19% and a maximum value up to 40%. It is also shown that current design provisions are overall conservative, but with nonuniform margins of safety that decrease with increasing member depth. It is anticipated that the results of this study will help improve the efficiency of future design equations for the shear strength of FRP RC.
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Acknowledgments
This research was funded by the EU FP7 Marie Skłodowska-Curie Initial Training Network European Network for Durable Reinforcement and Rehabilitation Solutions (ENDURE) program (Grant Agreement No. 607851). The authors thank the European Commission for its financial support and for providing wide networking opportunities within the research community.
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Published In
Journal of Composites for Construction
Volume 23 • Issue 1 • February 2019
Copyright
©2018 American Society of Civil Engineers.
History
Received: Mar 26, 2018
Accepted: Jul 20, 2018
Published online: Nov 24, 2018
Published in print: Feb 1, 2019
Discussion open until: Apr 24, 2019
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