Fatigue Bond of Carbon Fiber Sheets and Concrete in Rc Slabs Strengthened by CFRP

Kobayashi, Akiko; Matsui, S.; Kishimoto, Masanori

doi:10.1142/9789812704863_0082

Cited by 7 publications

(3 citation statements)

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“…Therefore, studies on the fatigue behaviour of FRP‐strengthened RC structures have been carried out increasingly in recent years. A literature review reveals that most of the existing research on fatigue of strengthened RC structures has focused on the global response –. However, very few research results regarding the long‐term bond characteristics of the CFRP plate‐to‐concrete bonded interface are available in the existing literature .…”

Section: Introductionmentioning

confidence: 99%

Experimental study on fatigue behaviour of CFRP plates externally bonded to concrete substrate

Zhang

2016

Structural Concrete

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The behaviour of the bond between fibre‐reinforced polymers (FRP) and concrete greatly influences the behaviour of concrete structures strengthened with FRP composites. Although numerous experimental studies have investigated this bond, experimental data concerning fatigue tests on carbon FRP plates attached to concrete blocks are still lacking. Therefore, a series of double‐lap shear tests under monotonic and fatigue loadings were performed on concrete prismatic specimens reinforced with CFRP plates. First, a series of experimental investigations are summarized. Thereafter, the fatigue behaviour of CFRP plate debonding is characterized using S‐N diagrams that represent the relationship of the upper‐limit fatigue load with the monotonic load strength and the number of cycles to debonding on a semi‐logarithmic scale.

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Section: Introductionmentioning

confidence: 99%

Experimental study on fatigue behaviour of CFRP plates externally bonded to concrete substrate

Zhang

2016

Structural Concrete

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“…Therefore, damage accumulation at FRP-concrete interfaces due to fatigue loading may be conveniently represented by The experimental results of cyclic loading tests on FRP-concrete bonded joints showed that the interface debonding propagates progressively with the increase of fatigue cycles (Bizindavyi et al, 2003;Diab et al, 2007b) as shown in Figure 4. Obviously, experimental results showed that the debonding propagation rate decreases significantly with fatigue cycles and this rate also depends on the type of adhesive (Neill et al, 2007;Kobayashi et al, 2003). The fatigue failure occurs when the residual bonded length can no longer sustain the maximum fatigue load.…”

Section: Observed Fatigue-induced Failure Modesmentioning

confidence: 99%

“…In all previous studies (Tan, 2003;Dai et al, 2005;Kobayashi et al, 2003), the most common way to represent the fatigue life of FRP/concrete bonded joints was by means of the Whöler curve, where fatigue strength of structure (S) is plotted against the number of cycles to failure (N f ). Nevertheless, the progressive local interface deficiency affects adversely the serviceability of FRPstrengthened structures.…”

Section: Fatigue Loadingmentioning

confidence: 99%

Modelling of time-dependent bonding and debonding in structures externally strengthened with fibre reinforced polymer sheets

Diab

2009

IJMIC

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The use of fibre reinforced polymers (FRPs) as externally bonded reinforcements has gained widespread acceptance as an innovative technique for the maintenance, rehabilitation and upgrading of existing concrete structures. Significant enhancements in stiffness, strength and seismic performance of the structures can be achieved by this technique. Among extensive research efforts which have been paid worldwide, the author's research group at Ibaraki University in Japan has greatly contributed in this field. Although short-term behaviour of FRP-strengthened structures is intensively reported thus far, their long-term performance has not thoroughly elucidated yet. This paper presents the recent development in the long-term behaviour of concrete structures externally strengthened with FRP, particularly focusing on the FRP-concrete interface subjected to sustain and fatigue loads. Some suitable time-dependent models for creep and fatigue loading are also introduced. This review paper covers also a comparison between available guidelines and recommendations with the experimental results of time-dependent loading.Reference to this paper should be made as follows: Wu, Z. and Diab, H. (2009) 'Modelling of time-dependent bonding and debonding in structures externally strengthened with fibre reinforced polymer sheets', Int.

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Bond Between EBR FRP and Concrete

Mazzotti

Bilotta

Carloni

et al. 2015

Design Procedures for the Use of Composites in Strengthening of Reinforced Concrete Structures

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Fatigue Bond of Carbon Fiber Sheets and Concrete in Rc Slabs Strengthened by CFRP

Cited by 7 publications

References 0 publications

Experimental study on fatigue behaviour of CFRP plates externally bonded to concrete substrate

Experimental study on fatigue behaviour of CFRP plates externally bonded to concrete substrate

Modelling of time-dependent bonding and debonding in structures externally strengthened with fibre reinforced polymer sheets

Bond Between EBR FRP and Concrete

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