Corrosion Response of Steel to Penetration of Chlorides in DC-Treated Hardened Portland Cement Mortar.

ABSTRACT: Electrochemical treatment by means of direct current (DC) is usually used as a measure for steel rebar corrosion protection, e.g., cathodic protection (CP), electrochemical chloride extraction (ECE), and re-alkalization (RA). However, the passage of an electrical charge through the pore system of concrete or mortar, coupled with the migration of ions, concentration changes, and resulting phase changes, may alter its chloride penetration resistance and, subsequently, the time until rebar corrosion activation. Porosity changes in hardened Portland cement mortar were studied by means of mercury intrusion porosimetry (MIP) and electrochemical impedance spectroscopy (EIS), and alterations in the mortar surface phase composition were observed by means of X-ray diffraction (XRD). In order to inno

SUBMITTER: Kouril M 

PROVIDER: S-EPMC12300289 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature