esijännitettyihin
Esijännitettyihin is a Finnish term that translates to "prestressed" in English. It refers to a method of construction where a material, most commonly concrete, is intentionally subjected to compressive stress before it is subjected to external loads. This pre-compression is achieved by introducing tension into reinforcing elements, such as steel tendons, and then anchoring them in place. When the tension in the tendons is released, they exert a compressive force on the concrete.
This technique is widely used in civil engineering, particularly in the construction of bridges, beams, and
There are two main types of prestressing: pre-tensioning and post-tensioning. In pre-tensioning, the tendons are stretched