Research Article

The Experimental Studies on Behavior of Ultrahigh-Performance Concrete Confined by Hybrid Fiber-Reinforced Polymer Tubes

Figure 8

Average stress-strain response curves for each group of confined UHPC specimens.
(a) UHPC-filled A/BFRP tubes
(b) UHPC-filled B/GFRP tubes
(c) UHPC-filled C/BFRP tubes
(d) UHPC-filled C/GFRP tubes
(e) UHPC-filled C/A/GFRP and C/B/GFRP tubes