The Maintenance Of Historic Iron And Steel
Structures: Coping With Corrosion
Author(s)
G. G. Nieuwmeijer
Abstract
Corrosion is the most dangerous enemy of historic iron and steel structures. After
a general introduction to the structural engineering aspects of corrosion, this
paper will focus on the relation between corrosion and structural detailing.
To provide insight into the most sensitive aspects in and around renovation
and restoration and to be able to take adequate measures it is necessary to have
some knowledge of the various types of corrosion. Cast iron, wrought iron and
various types of steel behave differently from each other.
Close attention should be paid to corrosion, especially in the places where
different types of metal are in contact with each other. External factors such as
relative humidity and air pollution also play a role. Usually corrosion is
promoted by inadequate structural detailing because in earlier times little was
known about this process. A summary of a number of important errors is
presented. It may be necessary to carry out modifications during restoration or
renovation.
As many structures are important for historical and cultural reasons,
adaptations should always be made in an honest and sympathetic way.
1 Introduction
In nature metals occur in the form of ores that consist primarily of metal oxides.
The addition of adding energy reduces the ores to metals, which have a tendency
to return to a condition in which there is minimal energy and thus, when nothing
is done to this, to corrode.
Corrosion is damage to metal caused by complex electrochemical reactions.
For iron and steel this is termed rusting. Rust is a mixture of iron oxides and iron
Keywords
Related Book
Other papers in this volume
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