Effective Use of Sacrificial Zinc Anode as a Suitable Repair Method for Severely Damaged RC Members Due to Chloride Attack

In many cases, the repair strategy by using sacrificial anodes for cathodic protection in real RC structures requires additional zinc after several years due to decreasing protective area. This experimental study evaluates effectiveness of time lag application anode applied beam specimens that deteriorated severely chloride attack. experiment, and (SACP) were 41-year-old exposed natural marine environments which embedded steel bars significantly corroded. The work was performed three stages. Instant-off rest potential tests conducted periodically demonstrate time-dependent depolarization value. first stage, a polymer-modified mortar as patch material cast replace concrete middle tensile part with small mortar. After current reaches an equilibrium state, are disconnected from year, defined second stage. During one year bar area remained passive, without any sign corrosion. As third installed existing protect it. From observation applying old parts, SACP both non-patch parts clarified be effective stopping corrosion until 20–30 based on service life prediction. Doi: 10.28991/CEJ-2022-08-07-015 Full Text: PDF