what is zero correction in post-tensioning

Question

Accepted Answer

Zero correction in post-tensioning refers to the adjustment made to the prestressing force to account for the elongation of the tendons.

Zero correction compensates for the elongation of the tendons due to the relaxation of steel and creep of concrete.
It ensures that the desired prestressing force is achieved after the relaxation of the tendons.
The correction is calculated based on the initial elongation of the tendons and the expected relaxation.
For example, if the initial elongation is 10mm and the expected relaxation is 5mm, the zero correction would be 5mm.

Accepted Answer

it is the correction basically calculation which remove the zero error to get a error free result.

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