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Article | REF: C6151 V1

Corrosion of reinforced concrete structures

Author: Bruno CAPRA

Publication date: November 10, 2014

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3. Steel corrosion mechanisms

3.1 Basic environment for steel in sound concrete

During the mixing of Portland cement-based concrete, the main anhydrides contained in the clinker (silicates C 2 S and C 3 S, aluminates C 3 A and C 4 AF) hydrate on contact with water [C 920] . From the very first moments, a very basic pH of around 13.5 to 14 can be measured in the interstitial...

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Steel corrosion mechanisms
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