Rust – iron + water + oxygen → hydrated iron(III) oxide = FE3+
When FErrous come into contact with oxygen and water they Rust
· Iron + Carbon = Steel
· Steel + Concrete = two materials with the same coefficient of expansion = re-inforced concrete = sky scrapers
Protection from rust – Alkalinity, Paint, plastic, Cathode
The principal signs of deterioration and distress within reinforced concrete structures are:
Period properties often used ferrous metals as ties and as structural elements.
Some mid- war properties of non conventional construction were built structurally of Ferrous structural elements :
Your structural/Building survey should advise you where these elements may be, their expected condition and how to ensure their protection.
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