Bridge Strengthening with CFRP
A significant number of concrete bridges are deteriorating and cracking due to environmental conditions such as weather, wear-and-tear and de-icing salts that penetrate through existing cracks which cause further damage to the structure. Externally bonding carbon fiber reinforced polymer (CFRP) to repair bridge girders has proven to have numerous advantages. Studies have shown that applying CFRP at the soffits of girders can enhance the flexural capacity of damaged girders by 23% to 28% compared to the control group. There was also a 10% to 15% increase in flexural strength when compared to undamaged girders. An evenly spaced u-wrap CFRP configuration efficiently mitigates de-bonding.