This paper describes an experimental investigation of the shear behavior of corroded reinforced concrete beams in chloride environment for a period of 26 years under service loading so as to be representative of the real structural conditions. Two seriously corroded short-span beams were tested until failure by three-point loading system. Another two beams of the same age but without corrosion were also tested as the control ones. The relationship of load and deflection was recorded to better understand the mechanical behavior of the corroded beams. Before the mechanical tests, cracking maps of the corroded beams were also drawn, the corrosion maps and the loss of the diameter of the tensile bars were also described after having broken the concrete. The residual mechanical behavior of the beams are discussed by the experimental results and the cracking maps. The results show that the corrosion of the beams induces by chloride has very important effect on the mechanical behaviors of the short-span beams, leading to modify the failure mode of the corroded beams

Effect of corrosion on the shear behavior of long-term corroded reinforced concrete beam in chloride environment

CORONELLI, DARIO ANGELO MARIA
2012-01-01

Abstract

This paper describes an experimental investigation of the shear behavior of corroded reinforced concrete beams in chloride environment for a period of 26 years under service loading so as to be representative of the real structural conditions. Two seriously corroded short-span beams were tested until failure by three-point loading system. Another two beams of the same age but without corrosion were also tested as the control ones. The relationship of load and deflection was recorded to better understand the mechanical behavior of the corroded beams. Before the mechanical tests, cracking maps of the corroded beams were also drawn, the corrosion maps and the loss of the diameter of the tensile bars were also described after having broken the concrete. The residual mechanical behavior of the beams are discussed by the experimental results and the cracking maps. The results show that the corrosion of the beams induces by chloride has very important effect on the mechanical behaviors of the short-span beams, leading to modify the failure mode of the corroded beams
2012
9780203103388
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/659814
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