Shear Strengthening method for RC beams by using post-tensioned UFC panel

Author(s) : T. Nakamura, P. Limpaninlachat, K. Kono, J. Niwa
Paper category : Proceedings
Book title : UHPFRC 2017 Designing and Building with UHPFRC: New large-scale implementations, recent technical advances, experience and standards
Editor(s) : F. Toutlemonde & J. ResplendinoT.Ch.
Print-ISBN : 978-2-35158-166-7
e-ISBN : 978-2-35158-167-4
Publisher : RILEM Publications SARL
Publication year : 2017
Pages: 517 - 524
Total Pages : 8
Language : English

Abstract: Ultra-high strength fiber reinforced concrete (UFC) has been highly developed and applied to various infrastructures such as bridges over the past decade in Japan. This study aims to propose a new shear strengthening method for RC beams by using prestressed UFC panels. As a pilot study, prestressing level, which was the average compressive stress induced by the prestressing in UFC, was varied as the experimental parameter. Four RC beams strengthened by post-tensioned UFC panels were subjected to four-point bending in order to observe the shear behavior and clarify the effect of prestressing in UFC. The panels were applied on one side or on both sides of the RC beams. The experimental results showed that the post-tensioned UFC panels can improve the shear capacity of the RC beams substantially and the panels can also prevent the brittle fracture. Furthermore, the shear carried by the post-tensioned UFC panel showed a linear increase with the prestressing level. In the presence of two UFC layers, the strength increment nearly doubles.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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