PSI - Issue 64

A. Cagnoni et al. / Procedia Structural Integrity 64 (2024) 944–950 6 Alessandro Cagnoni, Pierluigi Colombi, Marco A. Pisani, Tommaso D’Antino / Structural Integrity Procedia 00 (2019) 000 – 000

949

T T T

T T T

A ial load

A ial load

tro e mm

tro e mm

a

b

Fig. 5 Axial load F - stroke  curves of GFRP (a) and CFRP (b) bars with the novel wedge-barrel system.

a. b. Fig. 6 (a) Typical failure of GFRP bars and (b) Typical failure of CFRP bars anchored with the novel wedge-barrel system.

4. Conclusions In this paper, the preliminary results of an experimental campaign comprising tensile tests of glass FRP and carbon FRP bars with different anchors were provided and discussed. The results obtained showed that neither the bonded steel pipe nor the novel wedge-barrel anchorages were able to fully exploit the bar tensile properties. In fact, failure of bars was attained due to slippage of the bar within the steel pipes and bar delamination in the case of the wedge anchored bar. These results should be considered a lower bound for this technology, as tensile failure of all fiber filaments was not attained. Future tests will be performed to further investigate the capability of the wedge-barrel anchor system in providing an adequate anchorage to composite bars able to fully exploit their tensile properties.