In order to improve the seismic performance of structures and realize the self-recovery of building structures after an earthquake, shape memory alloy (SMA) and engineered cementitious composite (ECC) have been widely researched and applied to structures. This study systematically examines the bond-slip behavior between ribbed SMA bars and ECC through 25 sets of central pull-out tests under monotonic and cyclic loading conditions. The ribs of SMA can significantly improve the bond property with ECC. Increasing the cover thickness and enhancing ECC strength significantly improve the ultimate bond strength. Specifically, expanding the cover thickness from 2d to 4.5d results in a 27% bond strength improvement, while upgrading the matrix strength from E30 to E50 achieves a 31% enhancement. Conversely, enlarging the bar diameter from 6 to 10 mm reduces the ultimate bond strength by 23%, and extending the anchorage length from 5 to 10d causes a 27% reduction. Under cyclic loading conditions, the bond strength exhibits a 22% enhancement and demonstrates notable recovery characteristics. Through systematic analysis of experimental data and comparison with other models, a constitutive model was used to describe the bonding properties of SMA to ECC and verified by comparing with experimental curves.
Qian et al. (Mon,) studied this question.