Abstract
A meso-scale finite element model is first presented for simulating
the debonding behavior of FRP-to-concrete bonded joints in simple
shear tests. In this model, both the FRP plate/sheet and the concrete
are modeled using elements of mesoscopic sizes so that the shapes
and paths of cracks during the entire debonding process can be appropriately
captured. Results obtained from this model are next presented to
provide insight into the debonding failure process. Finally, based
on a finite element parametric study and existing test results, three
bond-slip models of different levels of sophistication are presented.
These proposed models are far more accurate than all existing bond-slip
models.
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