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Corrosion resistant reinforcing steel –  basic principles – Part 1

Utilisation of stainless steels in reinforcing concrete


In the case of steel reinforced concrete, the concrete bestows a double means of protection against corrosion on the embedded reinfor-cement of unalloyed steel [1]. The steel is passivated by the highly alkaline pore electrolyte and the concrete cover, due to its low permeability for gases and aqueous solutions, prevents the active agent necessary for corrosion from reaching the embedded steel. Reinforced concrete structures are nonetheless neither of unlimited durability nor free from maintenance requirements. In cases of carbonation of the concrete cover or chloride ingress, reinforcement steel corrosion and concrete spalling may be expected. Also, where stringent requirements for construction component safety are defined, it makes sense both technically and economically to utilise additional protective measures against corrosion.

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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