"Reinforced concrete (RC), also called reinforced cement concrete (RCC), is a composite material in which concrete´s relatively low tensile strength and ductility are compensated for by ...
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the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel bars (rebar) and is usually embedded passively in the concrete before the concrete sets. Worldwide, in volume terms it is an absolutely key engineering material." - (en.wikipedia.org 26.08.2021)
