A structural concrete element where steel tendons are tensioned after the concrete has been poured and cured. This tensioning imparts a compressive force into the concrete, significantly increasing its load-bearing capacity and spanning capabilities. The tendons, typically high-strength steel cables or bars, are encased within ducts or embedded directly in the concrete. After tensioning, the tendons are anchored to the concrete, maintaining the applied force.
The use of this construction technique allows for longer spans with thinner slabs, reducing material consumption and overall building height. This method offers advantages in minimizing cracking, controlling deflection, and enhancing durability, particularly in environments subject to heavy loads or expansive soils. Its development has revolutionized modern construction, enabling architects and engineers to design more efficient and structurally sound buildings and infrastructure projects.
