[1195] EFFECTIVENESS OF STEEL SURFACE CONDITIONS ON CATHODIC PROTECTION BY SACRIFICIAL ANODE IN CONCRETE
Keywords:Sacrificial anode in concrete, cathodic protection, rusted steel, potential, depolarization, 犠牲陽極, 電気防食, 発錆した鉄筋, 電位, 復極量
The purpose of this study was carried out to observe the effectiveness of initial condition (rusted or non-rusted) of embedded steel in partially-repaired concrete on sacrificial anode cathodic protection systems. Three concrete specimens consisting of "chloride-contaminated existing concrete" and "chloride-free repair sections" were prepared. Environmental change during exposure time was also included as an experimental parameter. Results show that placing non-rusted steel bars in repair concrete sections is the desirable as initial condition when CP (Cathodic Protection) is applied and exposed to both dry and humid conditions.