Pre-tensioned concrete (PC) elements are widely used in the construction industry, and the bond between strands and concrete is a key factor to evaluate their behavior. However, bond mechanisms are complex and existing design rules provide simplified formulations, which do not always ensure a good estimate of experimental evidence. Moreover, bond evolves during the service life of PC elements due to long term effects and external actions, that can lead to its deterioration. In this work, corrosion effects on bond of PC elements are analyzed through the development of analytical models, based on the Thick-Walled Cylinder (TWC) theory. New analytical models are presented, to estimate transmission and anchorage length in corroded PC elements.
Analytical Modelling of Transmission and Anchorage Length in Corroded Pre-Tensioned Concrete Elements
Belluco S.;Faleschini F.
2022
Abstract
Pre-tensioned concrete (PC) elements are widely used in the construction industry, and the bond between strands and concrete is a key factor to evaluate their behavior. However, bond mechanisms are complex and existing design rules provide simplified formulations, which do not always ensure a good estimate of experimental evidence. Moreover, bond evolves during the service life of PC elements due to long term effects and external actions, that can lead to its deterioration. In this work, corrosion effects on bond of PC elements are analyzed through the development of analytical models, based on the Thick-Walled Cylinder (TWC) theory. New analytical models are presented, to estimate transmission and anchorage length in corroded PC elements.
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