Recent experimental analyses have shown the high performance of the ‘‘fiber anchor” applied over FRP to
substrate bonded joints to avoid the premature debonding fracture of the reinforcement. In this study, an
optical non-destructive measurement method, the Digital Image Correlation, was used to describe the
debonding onto the FRP reinforced surface of 36 bricks subjected to Shear Test. A series of samples
not-fastened was compared to some series fastened by fiber anchor. The fields data permitted to analyze
the stress transfer zone and the effective bond length and to make several considerations about the product
stiffness–thickness of the FRP strip