Seismic Performance Assessment of a Corroded 50-Year-Old Reinforced Concrete Building

Yalçıner, Hakan; Şensoy, Serhan; Eren, Özgür

doi:10.1061/(asce)st.1943-541x.0001263

Cited by 33 publications

(9 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The joint effects of corrosion and seismic hazard on RC structures have been subject of much research interest in more recent years. Many studies have been conducted to develop suitable methods towards life-cycle seismic fragility analysis or reliability assessment of RC structures considering corrosion induced deterioration effects [9][10][11][12][13][14][15]. The research conducted by Choe et al [9,10] highlighted the adverse effects of corrosion on seismic fragility and reliability of a typical single-bent bridge.…”

Section: Introductionmentioning

confidence: 99%

Seismic fragility analysis of shear-critical concrete columns considering corrosion induced deterioration effects

Feng

et al. 2020

Soil Dynamics and Earthquake Engineering

View full text Add to dashboard Cite

Shear-critical reinforced concrete structures such as older columns with insufficient transverse reinforcement details or short columns are found to be vulnerable to earthquake loading. Meanwhile, in the aggressive environment, RC structures tend to be more vulnerable to earthquake since corrosion of reinforcements will cause deterioration of the material properties. In the present study, a new framework is proposed for seismic fragility analysis of shear-critical structures with the consideration of corrosion effects. A new model for corroded concrete columns is proposed which can account for shear performance deterioration due to corrosion and the seismic flexure-shear interaction (FSI) behaviors. The modified Ibarra-Medina-Krawinkler deterioration model is adopted to simulate the shear response in order to capture shear strength and stiffness deterioration as well as pinching behavior of corroded shear-critical columns. The deteriorating material properties are determined based on corrosion modeling methods, and the corrosion level differences between transverse and longitudinal reinforcement are addressed. Furthermore, the proposed framework adopts time-variant structural capacities as obtained from the proposed numerical model in the fragility analysis. The developed framework is demonstrated with a shear-critical bridge column. The results clearly indicate the adverse effects of corrosion on seismic fragility of shear-critical columns, especially at severer damage states. Using flexure model and time-invariant capacity index will underestimate seismic fragility compared with the results obtained using the proposed method.

show abstract

Section: Introductionmentioning

confidence: 99%

Seismic fragility analysis of shear-critical concrete columns considering corrosion induced deterioration effects

Feng

et al. 2020

Soil Dynamics and Earthquake Engineering

View full text Add to dashboard Cite

show abstract

“…The aging of concrete structures is nowadays still actual, and the theme of concrete durability is now increasing its importance also from the point of view of eco-sustainability, in terms of raw materials quarrying savings. One of the most important issues that is far from being solved is surely carbon steel reinforcements' corrosion [1][2][3][4][5][6]. Well compacted and low porosity concretes manufactured with ordinary Portland cement protect carbon steel reinforcement against general corrosion due to the formation of the passive film on the steel surface that occurs naturally in alkaline environments.…”

Section: Introductionmentioning

confidence: 99%

Inhibition Effect of Tartrate Ions on the Localized Corrosion of Steel in Pore Solution at Different Chloride Concentrations

et al. 2020

View full text Add to dashboard Cite

The aim of this work is the evaluation of the inhibition effect of tartrate ions with respect to the localized corrosion of steel reinforcements in alkaline solution as a function of the concentration of chlorides ions. Weight loss tests and electrochemical tests were carried out in saturated Ca(OH)2 solution with NaOH at pH 12.7 and 13.2. The results only evidence a slight inhibition effect at pH 12.7, whereas at pH 13.2 the pitting onset is inhibited also for chloride concentration up to 3 M. Tartaric acid is a dicarboxylic acid with nucleophile substituents, which can act as a chelating agent both adsorbing on the surface of the passive film and forming a soluble complex with ferrous and ferric ions. Tartrate causes an increase in the passive current density but it prevents the depassivation of carbon steel due to the action of chlorides, thus preventing pitting initiation due to the competitive adsorption on metal surface.

show abstract

“…At the component level, a large number of experiential studies have been conducted to investigate the seismic performance of corroded RC components [21][22][23][24][25]. At the structural level, numerical simulations of corroded RC buildings and bridges have been reported by numerous researchers [26][27][28][29][30][31][32]. Nevertheless, at a regional level, related study on regional seismic damage prediction of corroded RC buildings is limited.…”

Section: Introductionmentioning

confidence: 99%

Regional Seismic Damage Simulation of Corroded RC Frame Structures: A Case Study of Shenzhen City

et al. 2020

View full text Add to dashboard Cite

Buildings in coastal cities are susceptible to chloride ion attack and the seismic performance of these buildings can be impaired due to corrosion of reinforcements. In this study, a regional seismic damage simulation method that considers the influence of corrosion-induced seismic performance degradation is proposed. Firstly, the framework of the method is introduced, and the simulation process is presented. Secondly, experimental data of corroded reinforced concrete (RC) components are collected to obtain the reduction rules of component level backbone curve parameters (i.e., initial stiffness, peak carrying capacity, peak displacement, and ultimate carrying capacity). Afterwards, pushover analyses of typical RC frames in different corrosion conditions (i.e., degree of corrosion of components and proportion of corroded components) are conducted to acquire the reduction rules of interstory backbone curve parameters of corroded RC frame structures. Finally, RC frame structures, in Shenzhen city, are simulated using different corrosion scenarios. Simulated results indicate that some buildings along the coastline are affected by airborne chloride-induced corrosion and severe seismic damage can be observed. Moreover, some buildings that are far from the coastline can also experience severe seismic damage due to irregular use of sea sand as constructional material. The proposed method can be used to simulate the seismic performance of corroded RC structures and the outcomes of this study are expected to provide a useful reference for the seismic risk management of coastal cities.

show abstract

Seismic Performance Assessment of a Corroded 50-Year-Old Reinforced Concrete Building

Cited by 33 publications

References 14 publications

Seismic fragility analysis of shear-critical concrete columns considering corrosion induced deterioration effects

Seismic fragility analysis of shear-critical concrete columns considering corrosion induced deterioration effects

Inhibition Effect of Tartrate Ions on the Localized Corrosion of Steel in Pore Solution at Different Chloride Concentrations

Regional Seismic Damage Simulation of Corroded RC Frame Structures: A Case Study of Shenzhen City

Contact Info

Product

Resources

About