A »Cathodic protection prevents corrosion in underground steel structures by making the steel act as the cathode of an electrochemical cell. This is achieved by attaching a more easily oxidized metal, like zinc or magnesium, which then corrodes instead of the steel. This sacrificial metal effectively "takes the hit," keeping the steel safe and prolonging its durability. It's like having a protective buddy who absorbs all the damage for you!

A »Cathodic protection prevents corrosion in underground steel structures by applying an electric current that drives the reaction in the opposite direction, making the steel a cathode and stopping it from corroding. This is achieved by connecting the steel to a sacrificial anode or an impressed current system.