![]() ![]() This time allows concrete to not only be cast in forms, but also to have a variety of tooled processes preformed. ![]() The cement reacts with the water through a process called concrete hydration that hardens it over several hours to form a hard matrix that binds the materials together into a durable stone-like material that has many uses. When aggregate is mixed with dry Portland cement and water, the mixture forms a fluid slurry that is easily poured and molded into shape. ![]() Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. Concrete is the second-most-used substance in the world after water, and is the most widely used building material. Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures over time. ![]()
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