Bond behaviour of corroded reinforcing steel bars in concrete

Fang, Congqi; Lundgren, Karin; Plos, Mario; Gylltoft, Kent

doi:10.1016/j.cemconres.2006.05.008

Cited by 153 publications

(68 citation statements)

References 18 publications

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“…The beneficial effect of confinement on the residual strength to anchoring of the corroded rods has also been observed with the pull-out tests performed (20,21). At piece level, corrosion implies a reduction in the stiffness, ductility and bearing capacity of the beam (22).…”

Section: Introductionmentioning

confidence: 58%

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Variación de las características mecánicas de armaduras de alta ductilidad B500SD en función de su grado de corrosión

Escamilla¹,

Moreno²,

Cánovas³

2011

Mater. construcc.

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RESUMENLos efectos de la corrosión sobre las armaduras se manifiestan por la pérdida de sección y la variación de las propiedades mecánicas relacionadas con la ductilidad. En este trabajo se han ensayado a tracción 96 barras de acero B500SD que previamente se han sometido a niveles variables de corrosión. Los resultados muestran que los alargamientos de las barras disminuyen y el cociente entre la tensión máxima y el límite elástico aumenta conforme el nivel de corrosión avanza. A partir del estudio del efecto de entalla y de la distinta constitución metalográfica del acero a nivel de sección debido a su procedimiento de fabricación se pueden explicar los fenómenos anteriores.Palabras clave: corrosión, armadura, ensayo de tracción, ductilidad, hormigón.

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Section: Introductionmentioning

confidence: 58%

“…El efecto beneficioso del confinamiento sobre la resistencia residual a anclaje de barras corroídas también se ha comprobado con la realización de ensayos pull-out (20,21). A nivel de pieza, la corrosión supone una reducción de la rigidez, ductilidad y capacidad portante de la viga (22).…”

Section: Introductionunclassified

Variación de las características mecánicas de armaduras de alta ductilidad B500SD en función de su grado de corrosión

Escamilla¹,

Moreno²,

Cánovas³

2011

Mater. construcc.

View full text Add to dashboard Cite

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“…structures, and the possibility of restoration is directly related to the extent of damage (Capozucca and Cerri 2003). Through causing the spalling or cracking of concretes and decreasing the bond behavior, corrosion not only decreases the section area of the steel, but also reduces the mechanical properties (Chan et al 2005;Pantazopoulou and Papoulia 2001;Bhargava et al 2006;Fang et al 2006;Auyeung et al 2000;Kashani et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Shear Behavior of RC Beams with Corroded Stirrups

Zhang

et al. 2017

ACT

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The shear behavior of corroded reinforced concrete (RC) members is an urgent problem to be solved. The study carried out an experimental program on the shear behavior of 21 beams, which included 3 un-corroded RC beams and 18 corroded ones. Both shear span-to-depth ratio and corrosion degree influencing the shear strength as well as failure patterns were discussed in detail. This paper aims to contribute to a better understanding about the effect of corrosion on the shear behavior of corroded RC beams. The test results show that corrosion of stirrups reduces the aggregate interlock capacity of concrete, also the ductility and shear strength of the flexural members. In shear-compression zone, cracks caused by corrosion of stirrup have a predominant influence on shear strength; Failure modes of RC beams depend largely on shear span-to-depth ratio and are little affected by corrosion of stirrups. Based on the results of experiments and the limit equilibrium theory, the calculation model of shear capacity for corroded simply supported RC beams is proposed, which has a simple form and clearly physical conception.

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“…Steel bar corrosion reduces the ultimate and yield strength of steel, weakens the bond properties between reinforcement and concrete, and greatly affects the seismic performance and static load capacity of reinforced concrete structures (Gong et al 2004;Fang et al 2006). The rust (with Fe2O3 as the main component) that is produced by steel bar corrosion causes volume expansion and hoop tensile stress on the concrete, which subsequently leads to deformation and cracks (Lu et al 2011;Feliu et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of corrosion expansion of reinforced concrete specimen using fiber optical Brillouin sensing technique

Zhao¹,

Lv²,

Zhan³

et al. 2015

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

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This paper investigated the evaluation of the concrete damage degree due to steel bar corrosion for reinforced concrete structures. Brillouin optical fiber time domain analysis (BOTDA) sensors were developed to monitor the steel bar corrosion expansion strain. Electrochemical accelerating experimental results showed the sensors could be used for early detection and the lifelong monitoring. The damage factor was proposed to quantitatively evaluate the concrete damage degree before initial cracking and during the development of cracks. Finite element analysis was performed on concrete specimens to map the monitoring results with the damage factor, which supported the capability of the damage factor.

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Bond behaviour of corroded reinforcing steel bars in concrete

Cited by 153 publications

References 18 publications

Variación de las características mecánicas de armaduras de alta ductilidad B500SD en función de su grado de corrosión

Variación de las características mecánicas de armaduras de alta ductilidad B500SD en función de su grado de corrosión

Experimental Study on the Shear Behavior of RC Beams with Corroded Stirrups

Evaluation of corrosion expansion of reinforced concrete specimen using fiber optical Brillouin sensing technique

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