Active Protection of Fiber-Reinforced Polymer-Wrapped Reinforced Concrete Structures Against Corrosion

Increasing durability of lightweight concrete through FRP wrap

“…Gadve and Mukherjee [9] investigated the use of FRP wraps in providing protection to steel reinforcement in concrete already damaged by corrosion. Initially, the specimens were placed in a 3.5% solution and impressed with a constant 100 mA direct current for up to eight days.…”

“…The quickest method of inducing corrosion is by using impressed current [9]. This involves placing concrete into a salt solution and passing a direct current with a power supply through the rebar.…”

Ultrasonic guided waves for monitoring corrosion of FRP wrapped concrete structures

“…It is due to the reason that surface bonded FRP applies confinement pressure to RC member affected by corrosion and prevents the dislodging of the concrete cover. In addition to such passive protection, CFRP which is electrically conductive, can be used as anode for cathodic protection [30]. The general procedure in the experiments has been to accelerate corrosion in steel embedded in concrete by either impressed current technique or alternate wet and dry cycles and then repairing with FRP to investigate the passive protection offered by it to corrosion.…”

FRP Composites Strengthening of Concrete Columns under Various Loading Conditions

“…They revealed that epoxy sealing of cracks followed by FRP-wrapping is effective even when corrosion damage is severe. Gadve et al [56] applied CFRP sheets to reinforced concrete cylinders and exposed them to a highly corrosive environment. They also concluded the application of the CFRP sheet on concrete surface was very effective in retarding the corrosion of steel.…”