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.
Party Wall Surveyor serving Thanet and London
Third Surveyor serving England and Wales