Language: English
Crack repair
Reinforced concrete slab with FRP wrap
Strengthening and repairing concrete structure with CFRP is a new reinforcement technology. This technology applies carbon fiber, a high performance fiber, to civil engineering, and uses resin materials to paste carbon fiber cloth on the surface of structure or component to form CFRP.
Cause analysis of cracks
Through preliminary analysis, this kind of crack is caused by excessive fluidity, insufficient fluidity and inhomogeneity of concrete, no settlement or insufficient settlement before setting and hardening, and when the concrete sinks, it is caused by the moving settlement of steel bars and formwork. The depth of cracks appearing at 1 to 3h after concrete placement usually reaches the upper surface of the steel bar.
Treatment of cracks
Externally bonded carbon fiber reinforced polymer(CFRP) wrap
Strengthening and repairing concrete structure with CFRP is a new reinforcement technology. This technology applies carbon fiber, a high performance fiber, to civil engineering, and uses resin materials to paste carbon fiber cloth on the surface of structure or component to form CFRP. Through its synergy with structure or component, it can reinforce and improve the mechanical performance of structural components.
