Overloading impact on the flexural behavior of RC beams strengthened with FRP composites under fatigue: Experimental study

2020 ◽  
Vol 221 ◽  
pp. 111045
Author(s):  
Mohammad Al-Qaralleh ◽  
Houssam Toutanji ◽  
Tamer Eljufout
Keyword(s):  
Experimental Study ◽  
Flexural Behavior ◽  
Rc Beams ◽  
Frp Composites

Experimental study on the flexural behavior of RC beams strengthened with prestressed BFRP laminates

2021 ◽  
Vol 233 ◽  
pp. 111801
Author(s):  
Changyuan Liu ◽  
Xin Wang ◽  
Jianzhe Shi ◽  
Lulu Liu ◽  
Zhishen Wu
Keyword(s):  
Experimental Study ◽  
Flexural Behavior ◽  
Rc Beams

Flexural Behavior of Reinforced-Concrete (RC) Beams Strengthened with Hemp Fiber-Reinforced Polymer (FRP) Composites

2016 ◽  
Vol 860 ◽  
pp. 156-159
Author(s):  
Seyha Yinh ◽  
Qudeer Hussain ◽  
Winyu Rattanapitikon ◽  
Amorn Pimanmas
Keyword(s):  
Reinforced Concrete ◽  
Fiber Reinforced Polymer ◽  
Flexural Behavior ◽  
Rc Beams ◽  
Fiber Reinforced ◽  
Hemp Fiber ◽  
Flexural Strengthening ◽  
Frp Composites ◽  
Reinforced Polymer ◽  
Fiber Thickness

This experimental study has been conducted on the efficiency of epoxy-bonded hemp fiber reinforced polymer (FRP) composites in flexural strengthening of reinforced concrete (RC) beams. A total of five RC beams were cast and tested up to failure. The test parameters included fiber thickness and strengthening configuration. The experimental results show the capability of hemp FRP composites to increase the loading capacity in flexure of RC beams compared with the un-strengthened beam. The enhancement of ultimate load becomes more significant as the fiber thickness is increased. The effectiveness of strengthened beams in U-wrapped scheme is found greater than strengthened beams in bottom-only scheme. Based on results, it indicates that hemp FRP has a potential to considerably increase the strength and stiffness of the original RC beam.

Experimental Study on Flexural Behavior of Damaged RC Beams Strengthened with Prestressed CFRP Plate

2011 ◽  
Vol 250-253 ◽  
pp. 2263-2270
Author(s):  
Rui Zhou ◽  
Mei Zhen Zhang ◽  
Zhou Hong Zong
Keyword(s):  
Experimental Study ◽  
Finite Element ◽  
Element Model ◽  
Nonlinear Finite Element ◽  
Flexural Behavior ◽  
Finite Element Models ◽  
Rc Beams ◽  
Cfrp Plate ◽  
Sustained Loading ◽  
The Finite Element Model

Strengthening using prestressed CFRP plate is a new developed technology in recent years, which can significantly improve the flexural behavior of reinforced concrete (RC) beams. In this paper, an experimental study including four RC beams stengthened with CFRP plates using self-developed anchorage system was carried out. The nonlinear finite element models of the strengthened beams were constructed to simulate the influence of flexural behavior on RC beams strengthened with CFRP plates under different damage degrees. The experimental results indicated that initial damage degrees have greatly influence on the crack distribution and ductility, deflection and the ultimate flexural strength of the strengthened beams, as well as steel reinforcement strain and CFRP plate strain. Meanwhile, the finite element model can predict accurately performances of strengthened RC beams before CFRP debonding. In addition, the numerical analysis indicated that the sustained loading while strengthening RC beam using prestressed CFRP plates would induce adverse effect, so the live loading should be removed before starting the strengthening works.

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