An effective anchorage system for reinforced concrete beams with fiber reinforced polymer composites

2016 ◽  
pp. 2276-2283
Author(s):  
R.H. Haddad ◽  
C.S. Marji ◽  
R.Z. Al-Rousan
Keyword(s):  
Reinforced Concrete ◽  
Polymer Composites ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Anchorage System ◽  
Fiber Reinforced Polymer Composites

Structural strengthening and damage behaviors of hybrid sprayed fiber-reinforced polymer composites containing carbon fiber cores

2016 ◽  
Vol 26 (2) ◽  
pp. 358-376 ◽  
Author(s):  
SM Park ◽  
BJ Yang ◽  
BR Kim ◽  
SK Ha ◽  
HK Lee
Keyword(s):  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Polymer Composites ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Hybrid Strategy ◽  
Theoretical Approaches ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites

Recently, composite materials of a hybrid strategy are being developed to reduce the vulnerability of partial rupture failure. Simultaneously, the demand of a modelling method particularly for simulating the behavior of these materials is also emerging. This paper presents novel hybrid sprayed fiber-reinforced polymer composites containing carbon fiber cores developed for strengthening reinforced concrete structures, and a theoretical approach to model these materials. A micromechanical formulation that accounts for the hybrid characteristic of the composites was proposed to predict the overall performance of the composites. The derived model was then implemented into the nonlinear finite element codes to predict the structural behavior of the reinforced concrete beams retrofitted with the composites subjected to loading. A series of three-point bending tests of specimens were carried out to validate the predictability of the modeling technique. The obtained test results were comparatively explored with discussions of the theoretical approaches.

Data analysis on fiber-reinforced polymer shear contribution of reinforced concrete beam shear strengthened with U-jacketing fiber-reinforced polymer composites

2016 ◽  
Vol 36 (2) ◽  
pp. 98-120 ◽  
Author(s):  
Chunyang Ji ◽  
Weiwen Li ◽  
Chengyue Hu ◽  
Feng Xing
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Design Guidelines ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Beam Size ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites ◽  
Effective Depth

Lots of studies have investigated the shear contribution of the fiber-reinforced polymer of reinforced concrete beams with externally bonded fiber-reinforced polymer (FRP). In this paper, based on more than 200 collected experimental results of reinforced concrete beams shear strengthened with U-jacketing fiber-reinforced polymer composites, four existing design guidelines on the fiber-reinforced polymer shear contribution of strengthened reinforced concrete beams are compared in terms of the effect of the shear span-to-effective depth ratio, beam size, and stirrup ratio. These three influence factors are found to play significant roles in the prediction accuracy of different design guidelines. This paper, therefore, proposes an advanced shear strength model, which considers the effect of shear span-to-effective depth ratio, beam size, and stirrup ratio. The proposed model can provide better predictions of fiber-reinforced polymer shear contribution.

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