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Concrete is a something you can use to make roads, buildings, parts of houses and fences out of. Concrete is used more than any other building material.
Concrete is made from cement, gravel, lime, sand and water. It starts as a dry mix of all the powders, and after water is added it will go hard within a matter of hours from a chemical reaction.
Concrete is made from cement, gravel, lime, sand and water. It starts as a dry mix of all the powders, and after water is added it will go hard within a matter of hours from a chemical reaction.