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Material composed of aggregates (pebbles, gravel, sand) and water mixed together by a binder (cement or lime) that, after hardening in a mold, forms a substance that is resistant to compression.
Concrete whose steel bars are stretched before cooling, creating a highly resistant and durable material; it is used to manufacture beams with long spans.
Concrete reinforced by steel bars, often used in the manufacture of load-bearing units in a building.
Concrete component, solid or hollow, used mainly in the construction of masonry as a substitute for brick.