Corrosion-induced bond strength degradation in reinforced concrete—Analytical and empirical models

Bhargava, Kapilesh; Ghosh, Ashish; Mori, Yusuke; Ramanujam, S.

doi:10.1016/j.nucengdes.2007.01.010

Cited by 155 publications

(75 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4 show the comparison of predicted corrosion pressure at the bond interface with analytical results by Pantazopoulou and Papoulia (2001) and Bhargava et al (2007). The results are obtained for the experimental sample S2 in Liu and Weyers (1998) with cover thickness C =70mm, compressive strength = 31.5…”

Section: Model Evaluation and Applicationmentioning

confidence: 92%

“…1 has been frequently adopted such as in the studies by Bhargava et al (2007), Chen and Alani (2013), Liu and Weyers (1998) and Wang and Liu (2004). This model can be considered as an axisymmetrical problem subject to the assumed uniform expansion, and could be further treated as a plane stress problem because the normal tensionsoftening stress in the direction of longitudinal axis can be ignored (Pantazopoulou and Papoulia 2001).…”

Section: Concrete Cracking Modelmentioning

confidence: 99%

“…Recently, Bhargava et al (2007) utilised similar approach and proposed an analytical model 4 that includes the adhesion force at the bond interface. However, most of existing analytical models ignore the anisotropic behaviour of the cracked concrete affected by reinforcement corrosion.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analytical Model for Residual Bond Strength of Corroded Reinforcement in Concrete Structures

Chen

Nepal

2016

J. Eng. Mech.

View full text Add to dashboard Cite

Bond strength deterioration in corrosion damaged reinforced concrete structures significantly affects serviceability and load carrying capacity in their remaining service life. This paper presents a new analytical model for predicting the cracking development in the surrounding concrete and the residual bond strength of rebar in concrete structures due to reinforcement corrosion. The proposed analytical method adopts the thick-walled cylinder model for the cover concrete and considers the realistic properties of the corrosion-induced cracked concrete such as anisotropic behaviour, residual tensile strength and reduced tensile stiffness. As corrosion progresses, three phases for bond strength evolution associated with concrete cracking development are defined and the corresponding corrosion levels in each phase are determined. By using the constructed new governing equation, the crack width growth in the concrete cover and the radial bursting pressure at the bond interface are evaluated. The ultimate bond strength is then estimated from the contributions of adhesion,

show abstract

Section: Model Evaluation and Applicationmentioning

confidence: 92%

Section: Concrete Cracking Modelmentioning

confidence: 99%

See 1 more Smart Citation

Analytical Model for Residual Bond Strength of Corroded Reinforcement in Concrete Structures

Chen

Nepal

2016

J. Eng. Mech.

View full text Add to dashboard Cite

show abstract

“…Although significant research efforts have been devoted to the topic, an unequivocal relation between bond degradation and the observed corrosion level on reinforcement is still hard to establish due to scattered data found in the referred studies. As a result, Bhargava et al (2007) have proposed the M-pull model, a regression model based on the available experimental data on pull-out test of corroded specimens. The M-pull model provides a mean value of the residual normalized bond strength as a function of the corrosion level, X P , on the reinforcement, measured in terms of weight loss percentage.…”

Section: Bridge Numerical Modelmentioning

confidence: 99%

On the robustness to corrosion in the life cycle assessment of an existing reinforced concrete bridge

Cavaco

Neves

Casas

2017

Structure and Infrastructure Engineering

View full text Add to dashboard Cite

Management of existing structures has traditionally been based on condition assessment, based on visual inspections, disregarding the susceptibility of different structural types to aging and deterioration. Robustness, as a measure of the effects of unpredictable damage to structural safety can be a complementary information to the results of inspection. Although robustness has mostly been used to evaluate the consequences of extreme events, a similar framework can be used to investigate the result of aging, allowing a better understanding of the potential effects of deterioration and allowing a better allocation of available maintenance funding. In this work, a probabilistic structural robustness indicator is used to quantify the susceptibility of structures to corrosion. The methodology is exemplified through a case-study comprising an existing reinforced concrete bridge deck, heav- * Corresponding author Email address: joan.ramon.casas@upc.edu (Joan R. Casas)Preprint submitted to Structure and Infrastructure Engineering December 29, 2016 ily damaged due to reinforcement corrosion, and finally demolished due to safety concerns. Robustness measures the bridge deck safety tolerance to reinforcement corrosion. The principal effects of corrosion, including loss of area and bond between concrete and steel are modelled using a non-linear finite element model, coupled with a Response Surface Method to compute the bridge reliability as a function of the corrosion level, and finally used to assess robustness. Results show that the redundancy of the bridge allow significant redistribution of loads between elements with different corrosion levels. As a result, the bridge presents significant robustness and tolerance to reinforcement corrosion.

show abstract

“…In the model proposed by Bhargava et al (2007), bond strength of corroded bars increases while the concrete cover remains uncracked, usually up to corrosion level of 1-4% of mass loss in the rebar. However, bond is negligible at higher levels of corrosion.…”

Section: Significant Influence Of Reinforcement Corrosionmentioning

confidence: 99%

Analysis of the Residual Safety Level in RC Slabs with Severe Joist Corrosion

Vercher

Gil

Más

et al. 2015

J. Perform. Constr. Facil.

View full text Add to dashboard Cite

Corrosion-induced bond strength degradation in reinforced concrete—Analytical and empirical models

Cited by 155 publications

References 15 publications

Analytical Model for Residual Bond Strength of Corroded Reinforcement in Concrete Structures

Analytical Model for Residual Bond Strength of Corroded Reinforcement in Concrete Structures

On the robustness to corrosion in the life cycle assessment of an existing reinforced concrete bridge

Analysis of the Residual Safety Level in RC Slabs with Severe Joist Corrosion

Contact Info

Product

Resources

About