Electrochemical studies of steel in cement mortar containing chloride and micro-silica

Steel electrodes have been exposed for 3.5 years in cement mortar with and without chloride and ELKEM micro-silica. Corrosion potentials in mortar without Cl − null varied between −0.1 and +0.06 V(SCE), indicating passivity. One percentage of cement weight of Cl − null reduced the corrosion potentials to about −0.2 V(SCE). Micro-silica in chloride containing mortar increased the severity of corrosion the first year. However, after 2 years...