How do they keep the Eiffel Tower from rusting?
The Eiffel Tower is made of wrought iron, which is a type of iron that is relatively resistant to rusting due to its low carbon content. However, over time, the tower’s iron has still been subject to corrosion, and a variety of measures have been taken to prevent rust and maintain the tower’s appearance.
One of the most important measures taken to prevent rust is regular painting. The tower is painted every seven years with a specially formulated paint that helps to protect the iron from corrosion. The paint contains a high level of zinc, which acts as a barrier against rust and other forms of corrosion.
Another measure taken to prevent rust is the use of sacrificial anodes, which are small pieces of metal that are placed in contact with the iron. These anodes are made of a metal that is more reactive than iron, such as zinc or magnesium, and they will corrode instead of the iron. This helps to protect the iron from corrosion and extends the life of the structure.
A combination of regular maintenance, painting, and the use of sacrificial anodes helps to prevent rust and maintain the appearance of the Eiffel Tower.