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Concrete is a mixture consisting of
different types of gravel and sand, known as aggregate,
bonded together by portland cement and water. It is
a powerful building material, resistant to the natural
elements. To build with concrete is to build for the
future.
Concrete is a fascinating substance
and has been used for centuries. Concrete effects
our everyday lives - from sidewalks to roads, houses
to skyscrapers, bridges to dams - it shapes the world
we live in.
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