CORROSION OF STEEL BARS IN CONCRETE CONTAINING DIFFERENT CHEMICAL AND MINERAL ADMIXTURES

In the last decade, the use of various chemical and mineral admixtures in concrete has increased significantly. Admixtures may affect concrete permeability, which in turn affects chloride penetration and corrosion of embedded steel bars. The effects of several admixtures in concrete on the corrosion behavior of embedded steel is described. The results were determined based on measurements of chloride permeability, chloride penetration, polarization resistance, macrocell current flow, and visual observations.