299 / 2023-02-17 17:27:17

Bond-Slip Behaviors of BFRP Bar Embedded in Ecological High Ductility Concrete Using the Beam Test

Ecological High Ductility Concrete,BFRP bar,Bond

To better understand the design parameters of bridge deck link slabs prepared with basalt fiber reinforced polymer (BFRP) bar and ecological high ductility concrete (Eco-HDC), the bond performance of BFRP bar embedded in Eco-HDC using beam test based on RILEM standard was studied. The beam specimens had variable factors namely the diameter, embedment length and cover thickness of BFRP bar. Results indicate that most beam specimens display a failure mode of BFRP bar pulling out with Eco-HDC splitting. Besides, with the increasing diameter or embedment length of bar, the bond strength will be smaller. As the cover thickness is larger, the bond strength and first cracking bond stress show an increasing trend. The free end slip increases with the increasing value of embedment length or cover thickness. In addition, the value of loaded end strain is larger than the value of free end strain as the load increases. Moreover, the equations of bond strength and peak slip are obtained combined with the test data. At last, the embedment length and cover thickness of BFRP bar embedded in the bridge deck link slabs are recommended.