Experimental Investigation of Bonded Fiber Reinforced Polymer-Concrete Joints under Cyclic Loading

Bizindavyi, L.; Neale, K.W.; Erki, M. A.

doi:10.1061/(asce)1090-0268(2003)7:2(127)

Cited by 77 publications

(48 citation statements)

References 4 publications

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“…A number of studies have been conducted on the unloading and cyclic bond-slip behaviour of FRP-to-concrete bonded joints [26][27][28][29]. It has been observed in these studies that: 1) when the interface has entered the softening range, the bond stress reduces as the interfacial slip decreases due to unloading; 2) the unloading stiffness decreases rapidly with the increase of interfacial slip at unloading; and 3) in the softening range, the unloading stiffness is generally smaller than the initial loading stiffness.…”

Section: Damaged Local Bond-slip Modelmentioning

confidence: 99%

Behaviour of FRP-to-concrete interfaces between two adjacent cracks: A numerical investigation on the effect of bondline damage

Chen

Teng

2012

Construction and Building Materials

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Abstract:The bond behaviour between FRP and concrete has been commonly studied using simple pull-off tests on bonded joints where an FRP plate bonded to a concrete prism is pulled at one end to induce debonding failure. Knowledge gained from such studies has been directly employed in predicting debonding failure in FRP-plated concrete beams induced by major flexural cracks, but significant differences exist between the two scenarios. The chief difference lies in the interaction between adjacent flexural cracks in a flexural member which is absent in a joint pull-off test. This interaction may be approximated using an FRP-to-concrete bonded joint where the FRP plate is pulled at both ends. This paper presents a numerical study into this bonded joint problem, with the main objective being to clarify the effect of bondline damage during slip reversals on the ultimate load. The study shows that such damage has a significant effect on the predicted bond behaviour and ultimate load when the ratio between the end loads is larger than 0.7, particularly when the bond length is reasonably large. An important implication of the present study is that in the modelling (e.g. finite element modelling) of debonding behaviour of FRP-plated RC beams where multiple cracks exist, the FRP-to-concrete interface should be represented using a bond-slip model with appropriate consideration of the damaged behaviour during slip reversals in order to achieve accurate predictions.

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Section: Damaged Local Bond-slip Modelmentioning

confidence: 99%

Behaviour of FRP-to-concrete interfaces between two adjacent cracks: A numerical investigation on the effect of bondline damage

Chen

Teng

2012

Construction and Building Materials

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“…For pure shear tests, FRP rupture usually occurs when the maximum applied cyclic stress approaches the static bond strength of the FRP (Bizindavyi et al 2003) at the loaded end where local bending is evident . For the bending test, FRP rupture usually occurs near the transverse crack where high stress concentration is present (Xie et al 2015).…”

Section: Failure Modementioning

confidence: 99%

“…For the bending test, FRP rupture usually occurs near the transverse crack where high stress concentration is present (Xie et al 2015). FRP debonding is the most common failure mode for the FRP-concrete interface under cyclic loading (Bizindavyi et al 2003, Ko and Sato 2007, Yun et al 2008, Diab et al 2009, Mazzotti and Savoia 2009, Nigro et al 2011, Carloni et al 2012, Carloni and Subramaniam 2013, Xie et at. 2015.…”

Section: Failure Modementioning

confidence: 99%

“…A number of experimental and theoretical studies have been concerned with the fatigue load versus the loadedend slip response of the bond interface (Bizindavyi et al 2003, Ko and Sato 2007, Diab et al 2009, Carloni et al 2012, Carloni and Subramaniam 2013, Marinelli and Caggiano 2014, Carrara and Lorenzis 2015. These studies have shown that the stiffness of the bond load-slip response decreases as the number of fatigue cycles increases due to the propagation of fatigue damage along the interface.…”

Section: Fatigue Load-slip Response Of Frp-to-concrete Bond Interfacementioning

confidence: 99%

“…These studies have shown that the stiffness of the bond load-slip response decreases as the number of fatigue cycles increases due to the propagation of fatigue damage along the interface. The rate of stiffness reduction is affected by the fatigue load level, e.g., rapid deterioration is experienced under a high cyclic stress (Bizindavyi et al 2003).…”

Section: Fatigue Load-slip Response Of Frp-to-concrete Bond Interfacementioning

confidence: 99%

See 2 more Smart Citations

A review of FRP strengthened concrete structures under extreme loading

Chen¹,

Xie

Tao

et al. 2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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Many concrete structures are vulnerable to extreme loadings such as accidental impact, terrorist attack and earthquake disasters. Retrofitting of existing concrete structures for enhanced performance under these loadings has been an important topic of research for a long time, especially since the 911 terrorist attack. Among the different retrofitting techniques, external bonding of fibre reinforced polymer (FRP) composites has been a popular one. This paper presents a brief review of recent research on FRP strengthened concrete structures under blast, impact, earthquake and cyclic loading.

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Bond strength of polymer lightweight aggregate concrete

et al. 2013

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Bond strength, physical, and mechanical properties of lightweight PC were investigated with inclusion of pumice lightweight aggregate in maximum size of 12 mm. As binder material, epoxy resin‐based polymer was used with its hardener. The binder to aggregate ratio was 30% by weight. In addition, steel fibers were added to lightweight PC mixtures in ratio of 0, 0.5, and 1%. After lightweight PC mixture was prepared, it was poured in the molds with different type of steel‐bars in size of 100 × 100 × 100 mm3. The steel‐bars centered in the cubic molds, and they were in size of Ø12, Ø14, and Ø16. The specimens were cured at 60°C for 2 h. On the hardened polymer lightweight concrete (PLC), pull‐out test for bond strength and compressive strength tests were performed. Moreover, ultrasonic pulse velocity, water absorption by weight, specific porosity, and density experiments were carried out. The relation between physical and mechanical properties showed that PLCs become more durable when using ratio of steel fibers. POLYM. COMPOS., 34:2125–2132, 2013. © 2013 Society of Plastics Engineers

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Experimental Investigation of Bonded Fiber Reinforced Polymer-Concrete Joints under Cyclic Loading

Cited by 77 publications

References 4 publications

Behaviour of FRP-to-concrete interfaces between two adjacent cracks: A numerical investigation on the effect of bondline damage

Behaviour of FRP-to-concrete interfaces between two adjacent cracks: A numerical investigation on the effect of bondline damage

A review of FRP strengthened concrete structures under extreme loading

Bond strength of polymer lightweight aggregate concrete

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