Flexural Behavior of CFRP Strengthened Reinforced Concrete Beams

2013 ◽  
Vol 477-478 ◽  
pp. 740-743
Author(s):  
Hui Zhang ◽  
Hong Sheng Wu ◽  
Xing Quan Li
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Flexural Behavior ◽  
Experimental Result ◽  
Reinforced Polymer ◽  
Flexural Member ◽  
Good Agreement

In order to clear the influence of carbon fiber reinforced polymer (CFRP) on the bearing capacity of reinforced concrete beams, tests of three reinforced concrete beams strengthened with CFRP are carried out. Experimental result shows that CFRP can effectively increase bearing capacity of flexural member, and can restrain the development of crack. Cracking load, yield load and ultimate load are significantly increased. At the same time numerical simulation is done; it is good agreement with experimental results.

Research on the Flexural Behaviour of Reinforced Concrete Beams Strengthened with CFRP

2011 ◽  
Vol 194-196 ◽  
pp. 1781-1784
Author(s):  
Hua Wei ◽  
Ji Ye Zhang ◽  
Da Wei Zhu ◽  
Zhi Yuan Peng ◽  
Hai Jun Wang
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Ultimate Load ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Experimental Result ◽  
Reinforced Polymer ◽  
Flexural Member ◽  
Good Agreement

In order to clear the influence of carbon fiber reinforced polymer (CFRP) on the bearing capacity of reinforced concrete beams, tests of three reinforced concrete beams strengthened with CFRP are carried out. Experimental result shows that CFRP can effectively increase bearing capacity of flexural member, and can restrain the development of crack. Cracking load, yield load and ultimate load are significantly increased. At the same time numerical simulation is done; it is good agreement with experimental results.

Exploratory experimental study on flexural behavior of CFRP-reinforced concrete beams subjected to acidic loading effect

2018 ◽  
Vol 21 (14) ◽  
pp. 2184-2197 ◽  
Author(s):  
Hai-Yang Luan ◽  
Ying-Fang Fan ◽  
An Chen ◽  
Shi-Yi Zhang
Keyword(s):  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Flexural Behavior ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced

This article presents an exploratory study on the flexural behavior of carbon fiber–reinforced polymer–reinforced concrete beams subjected to acidic loading effect. To this end, an artificial acid rain with a pH level of 1.5 was prepared by mixing sulfate and nitric acid solutions. Eight reinforced concrete beams with/without carbon fiber–reinforced polymer applications were constructed and conditioned using the artificial acid rain. During conditioning, bending loads were applied to the top surfaces of the beams to simulate the acidic loading action. Three carbon fiber–reinforced polymer reinforcement schemes (corrosion reinforcement, reinforcement corrosion, and cracking reinforcement) were considered. After conditioning, the length and quantity of initial cracks in the beams were recorded. A combined ultrasonic–rebound method was then adopted to measure the strength and corrosion depth of the concrete and evaluate the beams’ integrity. Next, four-point bending tests were conducted to study the beams’ flexural behavior. It can be concluded that all beams deteriorated with the increase of the corrosion time. Carbon fiber–reinforced polymer–reinforced concrete beams performed better than normal reinforced concrete beams under the acidic loading effect. The initial cracks can influence the flexural behavior of carbon fiber–reinforced polymer–reinforced concrete beams.

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