Effects of Reinforcement Corrosion on the Performance of RC Frame Buildings Subjected to Seismic Actions

Inci, Pinar; Göksu, Çağlar; İlki, Alper; Kumbasar, Nahit

doi:10.1061/(asce)cf.1943-5509.0000378

Cited by 36 publications

(10 citation statements)

References 14 publications

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“…Throughout the world, the growing interest in the sustainability of construction encourages the engineering community to develop policies that discourage new construction rather than extend the design life of existing structures [ 1 ]. Structural strengthening allows existing underperforming structures to survive against additional service load requirement, design, or construction error and structural deterioration due to age or the surrounding environment [ 2 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Strengthening of RC Beams Using Externally Bonded Reinforcement Combined with Near-Surface Mounted Technique

et al. 2016

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This study investigates the flexural behaviour of reinforced concrete (RC) beams strengthened through the combined externally bonded and near-surface mounted (CEBNSM) technique. The externally bonded reinforcement (EBR) and near-surface mounted (NSM) techniques are popular strengthening solutions, although these methods often demonstrate premature debonding failure. The proposed CEBNSM technique increases the bond area of the concrete-carbon fibre reinforced polymer (CFRP) interface, which can delay the debonding failure. This technique is appropriate when any structure has a narrow cross-sectional width or is in need of additional flexural capacity that an individual technique or material cannot attain. An experimental test matrix was designed with one control and five strengthened RC beams to verify the performance of the proposed technique. The strengthening materials were CFRP bar as NSM reinforcement combined with CFRP fabric as EBR material. The test variables were the diameter of the NSM bars (8 and 10 mm), the thickness of the CFRP fabrics (one and two layers) and the U-wrap anchorage. The strengthened beams showed enhancement of ultimate load capacity, stiffness, cracking behaviour, and strain compatibility. The ultimate capacity of the CEBNSM-strengthened beams increased from 71% to 105% compared to that of the control beam. A simulation method based on the moment-rotation approach was also presented to predict the behaviour of CEBNSM-strengthened RC beams.

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Section: Introductionmentioning

confidence: 99%

Strengthening of RC Beams Using Externally Bonded Reinforcement Combined with Near-Surface Mounted Technique

et al. 2016

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“…The electrochemical methods show great potential in monitoring of relative mass loss and extent of reinforcement bars in concrete through variation of electrochemical parameters in the corrosion process [14,15,16]. Recently, with rapid development of smart materials and structures in the field of civil engineering, some smart materials which are well-used in the fields of aerospace and mechanical engineering have also been transplanted into concrete engineering [17,18,19,20,21,22,23]. Among them, piezoelectric materials have gained particular attention due to their merits of fast response time, simple structure, and good reliability.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Investigation of Reinforced Concrete Based on Piezoelectric Smart Materials

et al. 2019

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An embedded piezoelectric transducer was developed for monitoring the corrosion process of reinforcement bars in concrete based on the piezoelectric impedance technique. The electrochemical method was employed to accelerate the corrosion process of the reinforcement bar with relative mass loss of 0.5–10%, and the resistance spectra of the piezoelectric transducers were investigated to assess the corrosion process. The results show that the corrosion process of the reinforcement bar has significant influence on the resistance spectra of the piezoelectric transducers. Statistical parameters were used to intuitively evaluate the corrosion evolution based on variations of the resistance spectra. The corrosion process of reinforcement bar in concrete can be classified into three periods; that is, the initial period when the relative mass loss is less than 2%, the developing period at a relative mass loss of 2–4%, and the rapid corrosion period when the relative mass loss is higher than 4%.

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“…Also, Ghanooni-Bagha et al [11,12] have investigated the nonlinear behavior of short buildings and a steel structure by using Pushover analysis. In addition, Inci et al [13], and Yalciner et al, expanded their research [1,14], in addition to examining the phenomenon and mechanism of corrosion and Its effects on the properties of concrete and reinforcements, have been studied the corrosion effects on nonlinear behavior and seismic performance of RC structures. Inci et al, by modeling a moment-frame of reinforced concrete under the types of cavity corrosion of reinforcement in frame columns, calculated the corrosion effect on steel properties and evaluated the failure area for each corrosion scenario using nonlinear analysis.…”

Section: Introductionmentioning

confidence: 99%

Time-dependent Seismic Performance Assessment of Corroded Reinforced Concrete Frames

Ghanooni-Bagha

Zarei

Savoj

et al. 2019

Period. Polytech. Civil Eng.

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In this study, effects of reinforcement corrosion such as reinforcement cross section reduction, steel yield strength and concrete compressive strength reduction on RC member capacity decrease are studied. Next, a two-dimensional reinforced concrete moment resistant frame is modeled to evaluate the effects of moderate and severe intensity corrosion on moment-curvature behavior of elements and structure seismic response under nonlinear analysis. Structure capacity curves in push-over analysis and failure curves resulted from IDA for both the structure without and with corrosion are obtained and the effects of reinforcement’s corrosion on the reinforced concrete frame seismic performance are determined through comparing the results. The results revealed that in terms of amount, place and type of corrosion in the reinforced concrete frame, value of the reduction resisting moment of elements is different. Furthermore, the outcomes of nonlinear analyses showed that the capacity of structure is reduced and its seismic performance level is changed as a result of corrosion.

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Effects of Reinforcement Corrosion on the Performance of RC Frame Buildings Subjected to Seismic Actions

Cited by 36 publications

References 14 publications

Strengthening of RC Beams Using Externally Bonded Reinforcement Combined with Near-Surface Mounted Technique

Strengthening of RC Beams Using Externally Bonded Reinforcement Combined with Near-Surface Mounted Technique

Corrosion Investigation of Reinforced Concrete Based on Piezoelectric Smart Materials

Time-dependent Seismic Performance Assessment of Corroded Reinforced Concrete Frames

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