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Tensile properties of corroded embedded steel bars B500c in concrete

Ch. Alk. Apostolopoulos (Department of Mechanical and Aeronautical Engineering, University of Patras, Patra, Greece)
Vassilios Kappatos (School of Science and Technology, University of Northampton, Northampton, UK)

International Journal of Structural Integrity

ISSN: 1757-9864

Article publication date: 24 May 2013



The corrosion of reinforcing steel bars reduces significantly the life and durability of concrete structures. This critical concern causes great losses to the economy and industry. The purpose of this paper is to estimate the effects of corrosion on the tensile mechanical properties of embedded steel bars B500c in concrete.


The concept is based on the curve fitting modelling, as well the mathematical correlation of the tensile mechanical properties between corroded bare and corroded embedded steel bars. In order to achieve this, extensive experiments were carried out on both bare (Ø8, 10, 12, 16 and 18 mm) and embedded (Ø8 mm) steel bars B500c, which were subjected to artificially accelerated corrosive conditions in a chloride‐rich atmosphere for several exposure times.


The research results show that the estimation method is available and effective in simulating the tensile mechanical behaviour of corroded reinforcing steel bars B500c.


As far as is known, this is the first time that an advanced data processing technique has been employed to try to find the mathematical correlation of the existing corrosion damage on the residual tensile properties between bare and embedded steel bars. It is argued that these models can be developed in order to reduce the need for expensive experimental investigation in materials.



Apostolopoulos, C.A. and Kappatos, V. (2013), "Tensile properties of corroded embedded steel bars B500c in concrete", International Journal of Structural Integrity, Vol. 4 No. 2, pp. 275-294.



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