Application of CFRP as anode in cathodic protection for steel reinforced concrete – a review

Abstract

Impressed current cathodic protection (ICCP) is an electrochemical method to prevent or stop corrosion of steel reinforcement in concrete structures. The use of this technique is limited although it has been proven to be effective. One of the reasons is the high cost of anode material, commonly titanium anode. Hence there is a need for alternative anode materials to lower the cost and at the same time to improve the performance of the ICCP system through design. This paper reviews carbon fiber reinforced polymer (CFRP) as an anode for ICCP systems in concrete and discusses the degradation mechanism and operating conditions of the anode. It also gives an overview of the performance of CFRP as an anode material, from laboratory experiments to field operation.

Monitoring the flexural performance of GFRP repaired corroded reinforced concrete beams using passive acoustic emission technique

“…Also, the electrochemical measurements depend largely on the properties of surrounding concrete media like water content, type of aggregates, cement type, etc. Further wave‐based techniques like active ultrasonic guided wave method suffer from the problems of practical implementation in real‐life RC structures along with late detection of damage 32–39 …”