Experimental Study of the Fatigue Performance of the Bonding Surfaces and Load-Bearing Capacity of a Large-Scale Severely Damaged Hollow Slab Strengthened by CFRP

In recent years, carbon fiber reinforced polymer (CFRP) has been widely used in bridge repair, retrofitting, rehabilitation and strengthening to improve the bearing capacity. Although many studies have conducted explore efficiencies of CFRP, test specimens were small results difficult apply full-scale bridges. Investigations into effects CFRP on real life structures rely field load tests (without damaging structures), making it understand actual improvements carrying capacity effect. Moreover, there few experimental fatigue performances CFRP-strengthened structures, especially large-scale with wheel moving loads. this study, feasibility efficiency repair was investigated a large-scale, prestressed concrete hollow slab decommissioned from real-life bridge. The first put through destructive ultimate load-bearing Then, strips installed surface severely damaged strengthen it. Fatigue test—including single point sinusoidal load—and after evaluate performance. This study could help us capacities severe strengthened by reduce waste, save resources utilization our infrastructures.