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The current paper presents results from an experimental study monitoring the behaviour of reinforced concrete beams with different reinforcement dispositions (stirrups and main longitudinal reinforcement) that have undergone a galvanostatic process of accelerated corrosion. The changes in the cracking of the concrete cover in beams with different spacing of stirrups are comparatively analysed. In the same way, several dispositions of the main reinforcement are analysed (keeping the section constant). Some assembly criteria are to be considered by designers of concrete structures, as an additional parameter that should be taken into account besides those traditionally considered, to minimise the cracking that originates in the corrosion of the beams by limiting the presence of aggressive agents that may enhance the corrosive process.

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This paper aims to the experimental study of reinforced concrete beams subjected to mechanical stresses and simultaneously affected by a corrosion process of their reinforcements. The corrosion process is galvanostatically accelerated applying a certain current density to a limited area of the reinforcements, which are under constant wetting with a solution of Sodium Chloride. The influence of the different degrees of tension in the process of reinforcement corrosion is analyzed through electrochemical monitoring, the cracking advancement in the concrete cover, and the loss of base material in the bars.