Concrete is a kind of material used in construction, building and public radio.), since the large to small, such as The building houses, bridges and dams, which consists of a mixture 2 the cementitious material.Mixed with composite materials such as sand, stone or gravel and admixture. When mixed together to maintain the liquid is a period of time. Which is long enough to be poured into a mold shaped as desired. When the concrete hardens fully.This will vary according to the age of concrete, increasing
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