The Application of CFRP Reinforced Concrete Beams

2013 ◽  
Vol 468 ◽  
pp. 8-11 ◽  
Author(s):  
Ying Li Liu ◽  
Bing Xuan Du ◽  
Jin Long Zhao
Keyword(s):  
Carbon Fiber ◽  
Life Span ◽  
Concrete Beams ◽  
Fiber Composite ◽  
Engineering Application ◽  
Reinforced Concrete Beams ◽  
Carbon Fiber Composite ◽  
Reinforced Plastics ◽  
Calculation Results ◽  
Scope Of Application

This paper expounds the excellent characteristics of CFRP in engineering application, analyzes the scope of application of CFRP reinforced plastics.This paper introduces the principle and the carbon fiber composite reinforcement method and frame beams and carbon fiber reinforced beam in the structure of the calculation results were analyzed .By SAP2000 software analyzing, results show that after using CFRP reinforced plastics has dramatically enhanced the bearing capacity of the frame beam, improve the ductility of the components, prolong the life span of the structure .

Strengthening of Reinforced Concrete Beams by Carbon Fiber Composites

2018 ◽  
Vol 931 ◽  
pp. 379-384
Author(s):  
Yuri V. Ivanov ◽  
Yuri F. Rogatnev ◽  
Igor I. Ushakov
Keyword(s):  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Bearing Capacity ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Carbon Fiber Composites ◽  
Limiting State ◽  
Reinforced Plastics ◽  
Reinforced Beams ◽  
The Given

The paper considers the results of the experimental study of the reinforced concrete beams strengthened by carbon fiber reinforced plastics (the CFRP). Eight reinforced concrete beams of the 80x160 mm section and 1500 mm designed span have been manufactured and tested. The influence of the number of the CFRP layers (strengthening power) on bearing capacity and rigidity under the static loading of beams in the thirds of the span has been studied. The results obtained indicate the increase in bearing capacity of the reinforced beams from 24% up to 55% and the increase in rigidity by 45% for the commonly adopted limiting state, i.e. achieving ultimate deformations in concrete of the compressed zone). The paper underlines the need for using anchor devices in the form of U-shaped binders to ensure the efficiency of the given method of strengthening.

scholarly journals Comparative Study of Steel-FRP, FRP and Steel-Reinforced Coral Concrete Beams in Their Flexural Performance

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2097 ◽  
Author(s):  
Lei Wang ◽  
Jiwang Zhang ◽  
Changshi Huang ◽  
Feng Fu
Keyword(s):  
Carbon Fiber ◽  
Comparative Study ◽  
Failure Modes ◽  
Concrete Beams ◽  
Fiber Composite ◽  
Experimental Tests ◽  
Utilization Rate ◽  
Carbon Fiber Composite ◽  
Steel Core ◽  
Reinforced Beams

In this study, a comparative study of carbon fiber reinforced polymer (CFRP) bar and steel–carbon fiber composite bar (SCFCB) reinforced coral concrete beams was made through a series of experimental tests and theoretical analyses. The flexural capacity, crack development and failure modes of CFRP and SCFCB-reinforced coral concrete were investigated in detail. They were also compared to ordinary steel-reinforced coral concrete beams. The results show that under the same conditions of reinforcement ratios, the SCFCB-reinforced beams exhibit better performance than CFRP-reinforced beams, and stiffness is slightly lower than that of steel-reinforced beams. Under the same load conditions, the crack width of SCFCB beams was between that of steel-reinforced beams and CFRP bar-reinforced beams. Before the steel core yields, the crack growth rate of SCFCB beam is similar to the steel-reinforced beams. SCFCB has a higher strength utilization rate—about 70–85% of its ultimate strength. Current design guidance was also examined based on the test results. It was found that the existing design specifications for FRP-reinforced normal concrete is not suitable for SCFCB-reinforced coral concrete structures.

scholarly journals STUDIES OF THE STRESS-STRAIN STATE OF REINFORCED CONCRETE BEAMS REINFORCED WITH CARBON FIBER

2021 ◽  
Vol 82 (4) ◽  
pp. 101-110
Author(s):  
I.S. Bondar ◽  
◽  
Al Dulaimi Salman Dawood Salman ◽  
D.T. Aldekeyeva ◽  
R.S. Imambaeva ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Strain State ◽  
Concrete Beams ◽  
Field Studies ◽  
Reinforced Concrete Beams ◽  
Stress Strain ◽  
Reinforced Plastics ◽  
Stress Strain State ◽  
Numerical Studies

The article examines field studies of reinforced concrete beams, fracture schemes, and the nature of the formation, development of cracks in reinforced concrete elements. Modeling the stress-strain state of reinforced concrete beams in the ANSYS software and computational complex, comparing the results of field and numerical studies. A method of finite element modeling of beams reinforced with fiber plastics (carbon fiber reinforced plastics) is proposed. A comparison of fracturing schemes obtained as a result of numerical simulation is presented.

EFFECT OF RATE AND MODE OF LOADING ON STRENGTH AND STIFFNESS REINFORCED WITH CARBON FIBER REINFORCED PLASTICS

2016 ◽  
Vol 2 (1) ◽  
pp. 52-56
Author(s):  
Меркулов ◽  
Sergey Merkulov ◽  
Есипов ◽  
Stanislav Esipov
Keyword(s):  
Carbon Fiber ◽  
Fiber Composite ◽  
Fiber Reinforced ◽  
Carbon Fiber Composite ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
External Reinforcement ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced ◽  
Strength And Stiffness

This paper presents a method for evaluating the effect of loading parameters on the strength of ani-sotropic unidirectional carbon-fiber composite material under tension in the plane of orientation of the fibers. Experimentally studied mechanisms of deformation and fracture of the samples shows the dependence of the mechanical properties of reinforced carbon fiber reinforced plastics. The objective of the study is to determine the applicability of CFRP for strengthening by external reinforcement has lost the strength of the stretched zones of concrete elements, as well as analysis of the degree of influence of parameters of loading of the structures on their strength after amplification.

Study on Pre-CFRP Reinforcement Based on Anti-Arch Method

2014 ◽  
Vol 487 ◽  
pp. 500-503
Author(s):  
Dong Liang ◽  
Lu Chen ◽  
Jing Sun
Keyword(s):  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Theoretical Analysis ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Cfrp Sheet ◽  
Fiber Reinforced Plastics

The mechanism of using prestressed carbon fiber reinforced plastics (Pre-CFRP) sheet to strengthen reinforced concrete beams with anti-arch deflection method was proposed. And then the corresponding theoretical analysis was derived, and the effectiveness of this reinforcement method is verified by experiment in laboratory to improve the girders stiffness and cracking load.

Experimental and Theoretical Analysis of Carbon Fiber Filament Wound Tubes with Symmetric Winding Angle under Tensional Loading

2011 ◽  
Vol 341-342 ◽  
pp. 276-280 ◽  
Author(s):  
Qi Xiao ◽  
Jiang Sun
Keyword(s):  
Carbon Fiber ◽  
Fiber Composite ◽  
Experimental Result ◽  
Axial Stiffness ◽  
Carbon Fiber Composite ◽  
Filament Wound ◽  
Calculation Results ◽  
Laminate Theory ◽  
Winding Angle ◽  
Good Agreement

Carbon fiber composite tubes with symmetric winding angles were experimented under tensional loading and theoretically calculated using classical laminate theory. The experimental result showed that the axial stiffness of filament wound tubes without woven fiber was a little higher than that of filament wound tubes with woven fibers. In addition, the theoretical calculation results of axial stiffness had a good agreement with the experimental results of filament wound tubes without woven fiber.

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