Challenges in Bond Modelling of Corroded Pre-Tensioned Concrete Structures

Assessing the residual structural performance of deteriorated pre-tensioned concrete (PC) beams requires proper modeling of materials' constitutive relationships. Bond plays a key role in governing the shear and bending resistance of PC members since corrosion deterioration can lead to an increase in transfer and anchorage lengths and a diminishing of effective prestress. Besides, a lack of data can be observed in the literature since experimental campaigns are time-consuming and difficult to perform, especially concerning the estimation of the anchorage length. In this contribution, a review of the most recent literature on this topic is carried out, and possible solutions to address the problem of measuring and modeling bond in PC members are presented.