Interactions with gases and the environment
Reactivity of the surfaces of concrete

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Interactions with gases and the environment
Reactivity of the surfaces of concrete

Author : Matthieu HORGNIES

Review date: January 13, 2021 | Lire en français

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3. Interactions with gases and the environment

3.1 Highlighting the carbonation front

Over time, hydrates, and in particular portlandite crystals (Ca(OH) 2 ), naturally carbonate on contact with atmospheric carbon dioxide dissolved in capillary water according to the carbonation reaction :

Ca(OH)2+CO2CaCO3+H2O

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