Prediction of Concrete Crack Width under Combined Reinforcement Corrosion and Applied Load

Li, Chun‐Qing; Yang, Shangtong

doi:10.1061/(asce)em.1943-7889.0000289

Cited by 71 publications

(55 citation statements)

References 90 publications

(132 reference statements)

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“…Balafas and Burgoyne [13] proposed a double-cylinder model based on the fracture mechanics theory to determine structural lifetime from corrosion initiation to cover spalling. Li et al [14][15] assumed that the cracked concrete cylinder was an isotropic material with a reduced elastic modulus in the tangential direction. However, the stress continuity and strain compatibility conditions on the common boundary between the uncracked and cracked concrete cylinders were not satisfied in their model.…”

Section: Introductionmentioning

confidence: 99%

A double-cylinder model incorporating confinement effects for the analysis of corrosion-caused cover cracking in reinforced concrete structures

Zhang

2015

Corrosion Science

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A double-cylinder model incorporating confinement effects for the analysis of corrosion-caused cover cracking in reinforced concrete structures, Corros. Sci. (2015), http://dx. a b s t r a c tIn this paper, a double-cylinder model with a consideration of concrete confinement effects is proposed to simulate reinforcement corrosion-caused cover cracking. The analytical model incorporates force equilibrium in both tangential and radial directions as well as volume expansion and deformation compatibility in the steel-rust-concrete interface. Confinement effects outside the cylinders are taken into account by comparing the numerical and available experimental results. Parametric studies are conducted to investigate the variations of the critical volume of consumed steel, critical expansive pressure and time to cover cracking.

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Section: Introductionmentioning

confidence: 99%

A double-cylinder model incorporating confinement effects for the analysis of corrosion-caused cover cracking in reinforced concrete structures

Zhang

2015

Corrosion Science

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“…In experimental studies and engineering investigations on corroded RC, many scholars including Li and Yang [1], Ma et al [2] and Wang and Liang [3] found that the transverse rebar could undergo more severe damage than the longitudinal rebar, and even break at the junction point with the longitudinal rebar. Because of the comparative smaller depth of concrete cover for transverse rebars, the latter are more easily reached by chloride and other corrosion induction chemicals.…”

Section: Introductionmentioning

confidence: 99%

The corrosion of stirrups and its effect on the seismic fragility of a corroded reinforced concrete column

Zhang

2017

WIT Transactions on State-of-the-Art in Science and Engineering

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As service rates increase, the corroded rebar stands out as a major problem for existing reinforced concrete (RC) columns in a corrosion-inducing environment. The corrosion of stirrups is more serious than that of longitudinal bars, due to smaller clear concrete cover and smaller diameter. It deteriorates the confinement behaviour and thus decreases the shear resistant capacity, potentially changing the failure modes from ductile flexural failure mode to brittle flexural-shear failure mode, or even shear failure mode. Therefore, the evolution of the seismic damage pattern of existing corroded RC columns and its service-year related fragility analysis are becoming heated research topics in the field of structure hazard prevention research. The objectives of this paper will be to focus on how to use FEM software to numerically simulate the seismic behaviour of corroded columns accounting for materials deterioration and bond degradation. Pushover curves shown that a transverse rebar corrosion level above 10% could reduce the seismic capacity of columns by a great extent. In addition, the stiffness, ductility and energy dissipation capacity declines. It also demonstrated the transition of failure mode from flexure failure to shear failure as the corrosion level of stirrups increased. The fragility analysis based on the FEM results indicated that the RC column with corroded stirrups is much more vulnerable.

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“…Moreover, the reinstatement cost of corrosion-affected RC structures is significantly high; 36 worldwide, the maintenance and repair costs for corrosion-affected concrete infrastructure are 37 estimated around $100 billion per annum [1]. 38 …”

Section: Introduction 29mentioning

confidence: 99%

“…Fracture energy 120 N/m S 1 Spacing between rebars 30 mm S 2 Spacing between rebars 45 mm S 3 Spacing between rebars 60 mm P Crack pattern De Delamination Sp Combined delamination and corner spalling t th1…”

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confidence: 99%

“…Considerable research has been carried out in concrete cover cracking induced by corrosion of 40 reinforcement [1][2][3][4][5][6][7][8]. Liu However, due to the fact that chlorides, as well as moisture and oxygen, penetrates into 50 surface of steel at different rates on different sides of the concrete, it is rare to have a uniform 51 corrosion on the reinforcing bar.…”

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Time to surface cracking and crack width of reinforced concrete structures under corrosion of multiple rebars

Yang

2017

Construction and Building Materials

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This version is available at https://strathprints.strath.ac.uk/62274/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Concrete cover cracking caused by corrosion of reinforcement is one of major deterioration 11 mechanisms for reinforced concrete structures. In practice, time to surface cracking and crack 12 width evolution are of significance in regards to the assessment of serviceability of reinforced 13 concrete structures. Literature review suggests that, although considerable research has been 14 undertaken on corrosion-induced concrete cracking, little has been focused on corrosion of 15 multiple reinforcing bars, especially by considering the non-uniform corrosion process. In this 16paper, a time-dependent non-uniform corrosion model is established. A cohesive crack model 17 is then formulated to simulate arbitrary cracking in the whole cover of concrete structures. 18Two typical cover failure modes (i.e., "delamination" and "combined delamination and corner 19 spalling") have been simulated under the non-uniform corrosion of multiple reinforcing bars 20 and found dependent on spacing of reinforcement and fracture energy of concrete. The effects 21 of corrosion, geometric and mechanical parameters on the time to surface cracking after 22 corrosion initiation and the crack width evolution are also investigated and discussed. The 23 developed model is partially verified by comparing the results with those from experimental 24 tests on uniform corrosion of multiple reinforcing bars. 25

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Prediction of Concrete Crack Width under Combined Reinforcement Corrosion and Applied Load

Abstract: TABLE OF CONTENTS vi LIST OF FIGURES xi LIST OF TABLES xvi NOTATION xvii CHAPTER 1 INTRODUCTION 1.1 Background xix c f Concrete strength in compression ,0 c f Strength of zero porosity ' t

Cited by 71 publications

References 90 publications

A double-cylinder model incorporating confinement effects for the analysis of corrosion-caused cover cracking in reinforced concrete structures

A double-cylinder model incorporating confinement effects for the analysis of corrosion-caused cover cracking in reinforced concrete structures

The corrosion of stirrups and its effect on the seismic fragility of a corroded reinforced concrete column

Time to surface cracking and crack width of reinforced concrete structures under corrosion of multiple rebars

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