Review on prestress loss evaluation in concrete beams

In the last few decades, prestressing techniques have been used to build very important structures, infrastructures, and bridges. Since the serviceability and the safety of prestressed concrete members rely on the effective state of prestressing, development of tools and dynamic procedures capable of estimating the effective prestress loss have been widely carried on. Amongst other techniques, static identification using second-order deflections has proved to be an accurate and reliable method to evaluate prestress loss. This paper represents a review of some important research works on prestress loss evaluation in concrete beams presented in the literature. Comments and recommendations will be made at proper places, while concluding remarks including future research directions will be presented at the end of the paper