Concrete has high compression strength but low tensile
strength. It can be damaged by sea water, fire and bacterial, physical or
chemical damages. Overtime concrete structures will crack to some extent due to
shrinkage. It can last approximately 60 years with maintenance. It has a
stone-like consistency and mostly used as hardened building material, it is usually
reinforced with high tensile materials such as steel. Glass is quite resistant to corrosion in
comparison to other materials. It is made by melting sand, soda ash, dolomite,
and limestone. It takes a long time to degrade and one of the substances that
would corrodes glass. It is mostly used as transparent glazing material on a
building’s envelope. With steel the major constituent is iron and depending on
the strength other elements are added. Steel can be hot rolled or cold form.
Small cracks can form of steel after being under pressure for long periods of
time. Steel can last over 25 years with proper protection and usually has corrosion
protection sprayed onto it.
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