Concrete cancer

Concrete cancer is where by the concrete on buildings / houses begin to degrade.
The steel reinforcements inside the concrete begin rusting, as it rusts it expands causing the concrete to crack.
Usually caused by the presence of contaminants and weather combined with the natural atmosphere.
There are several forms of concrete defects, one being from water penetration which causes the concrete to rust and expand creating stress on the surrounding concrete which then begins to spall.
In order to create a solution for this problem, the spalled concrete must be removed and any exposed steel must either be replaced or treated.