Pre-stressed concrete is a type of concrete that is specially treated to make it stronger and more durable. Before the concrete is poured, steel tendons or wires are stretched and placed inside the form. Once the concrete hardens, the tendons are released, putting the concrete under compression. This process helps the concrete resist bending and cracking under heavy loads. Pre-stressed concrete is commonly used in building bridges, parking structures, and large buildings where high strength and durability are required.

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