File:BétonReinforcedConcrete2008 518.jpg

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English: Deteriorated surface of a reinforced concrete wall, after twenty years. This discrepancy is due to improper positioning of iron in concrete. this wall is under subway of Lille, near Boulevard Louis XIV in Lille (north of France). The seedling is a young budleia (Buddleja davidii)). This plant is invasive and introduced, pioneering and typical of urban wastelands and new habitats.
Français : Dégradation superficielle d'un béton armé après une vingtaine d'année. Cette anomalie s'explique par un mauvais positionnement du fer à béton. Mur de soutènement du métro lillois, près du Boulevard Louis XIV à Lille. La plantule est un jeune buddleia (Buddleja davidii), plante pionnière introduite et invasive, typique des friches et néomilieux urbains.
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Source Self-photographed
Author Lamiot

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current08:14, 23 February 2008Thumbnail for version as of 08:14, 23 February 20082,560 × 1,920 (2.23 MB)Lamiot (talk | contribs){{Information |Description= {{fr}} Dégradation superficielle d'un béton armé après une vingtaine d'année. Cette anomalie s'explique par un mauvais positionnement du fer à béton. Mur de soutènement du métro lillois, près du Boulevard Louis XIV à

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