Effect of corrosion pattern on the ductility of tensile reinforcement extracted from a 26-year-old corroded beam

Tension tests were carried out to investigate the effect of the corrosion pattern on the ductility of tension bars extracted from a 26-year-old corroded reinforced concrete beam. The tensile behavior of corroded bars with different corrosion patterns was examined carefully, as were two non-corroded bars extracted from a 26-year-old control beam. The results show that corrosion leads to an increase in the ratio of the ultimate strength over the yield strength, but reduces the ultimate strain at maximum force of the reinforcement. Both the corrosion pattern and the corrosion intensity play an important role in the ductile properties. The asymmetrical distribution of the corrosion around the surface is a decisive factor, which can influence the ultimate strain at maximum force more seriously.

[1]  Thierry Vidal,et al.  ANALYZING CRACK WIDTH TO PREDICT CORROSION IN REINFORCED CONCRETE , 2004 .

[2]  Raoul François,et al.  Corrosion of the reinforcement and its influence on the residual structural performance of a 26-year-old corroded RC beam , 2014 .

[3]  A. Castel,et al.  Repairing corroded RC beam with near-surface mounted CFRP rods , 2011 .

[4]  Han-Seung Lee,et al.  Evaluation of the mechanical properties of steel reinforcement embedded in concrete specimen as a function of the degree of reinforcement corrosion , 2009 .

[5]  Quang Thanh Nguyen,et al.  Mechanical Properties of the Rust Layer Induced by Impressed Current Method in Reinforced Mortar , 2008 .

[6]  A. Almusallam,et al.  Effect of degree of corrosion on the properties of reinforcing steel bars , 2001 .

[7]  Arnaud Castel,et al.  Mechanical behaviour of corroded reinforced concrete beams—Part 2: Bond and notch effects , 2000 .

[8]  Mark G. Stewart,et al.  Mechanical behaviour of pitting corrosion of flexural and shear reinforcement and its effect on structural reliability of corroding RC beams , 2009 .

[9]  G. J. Al-Sulaimani,et al.  Effect of Rusting of Reinforcing Steel on its Mechanical Properties and Bond with Concrete , 1990 .

[10]  Shamsad Ahmad.  Reinforcement corrosion in concrete structures, its monitoring and service life prediction - A review , 2003 .

[11]  A. Castel,et al.  Mechanical Behavior of Long-Term Corroded Reinforced Concrete Beam , 2011 .

[12]  M. Saeed Mirza,et al.  Mechanical Response of Corroded Steel Reinforcement of Abandoned Concrete Bridge , 2002 .

[13]  Raoul François,et al.  Impact of corrosion on mechanical properties of steel embedded in 27-year-old corroded reinforced concrete beams , 2013 .

[14]  W. Jin,et al.  On the penetration of corrosion products from reinforcing steel into concrete due to chloride-induced corrosion , 2010 .

[15]  Arnaud Castel,et al.  The corrosion pattern of reinforcement and its influence on serviceability of reinforced concrete members in chloride environment , 2009 .

[16]  Sp.G. Pantelakis,et al.  Tensile behavior of corroded reinforcing steel bars BSt 500s , 2006 .

[17]  Kapilesh Bhargava,et al.  Model for cover cracking due to rebar corrosion in RC structures , 2006 .

[18]  Giovanni Plizzari,et al.  Mechanical Properties of Corrosion-Damaged Reinforcement , 2005 .

[19]  Dario Coronelli,et al.  Structural Assessment of Corroded Reinforced Concrete Beams: Modeling Guidelines , 2004 .