Behavior of FRP grid-reinforced ultra-high performance concrete (UHPC) pipes under lateral compression

Experimental Studies and Application of Fiber-Reinforced Polymers (FRPs) in Civil Infrastructure Systems: A State-of-the-Art Review

“…Chen et al [ 17 ] applied this technique to circular concrete columns with GFRP strips. In contrast to Liao et al [ 18 ], the failure mode was the rupture of an FRP strip with an explosive sound. The FRP rupture was located near the mid-height region; consequently, the concrete lost its confinement.…”

“…Liao et al [ 18 ] proposed ultra-high-performance concrete (UHPC) pipes internally reinforced with FRP grids and CFRP jacketing, as shown in Figure 4 .…”

“…The authors mentioned that the CFRP jacket could be adopted for protection against corrosion, was nerveless, and obtained better flexural performance than the FRP grip. Therefore, the CFRP jacket can assist in avoiding pipe-side section separation failures [ 18 ]. Furthermore, the specimens presented a separation between the FRP grip and UHPC that could be resolved by increasing the pipe thickness or applying CFRP jacketing.…”

“…Liao et al [ 18 ], Chen et al [ 25 ], Kalyani et al [ 22 ], and others experimented with reinforcement concrete (RC) because steel is the traditional method for improving the mechanical properties of RC. Prakash et al [ 26 ] compared steel reinforcement with GFRP bars.…”

“…A combined study by Liao et al [ 18 ] and Prakash et al [ 26 ] reduced the use of steel or FRP bars for reinforcement. The combination of bars and laminates/sheets could increase the ductility; consequently, the cracks could be reduced, and the concrete structure could aim for a higher load capacity.…”