الفهرس 
CHAPTER (1): INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
One of the primary causes of concrete deterioration is chloride-induced corrosion. The damaged regions are typically removed in traditional repair methods to restore corroded structures. Another technique involving electrochemical chloride extraction (ECE) has a growing popularity with regard to its effectiveness as a non-destructive treatment. This technique enables reducing the rate of corrosion of steel rebar caused on by chloride ions. To prevent its corrosive effect on steel, it essentially entails a movement of Cl- ions from the reinforcement outward to the structure surface. By applying a direct current between an anode in contact with an electrolyte on the outer of the concrete structure being treated and its own reinforcement acting as the cathode in this electrolytic process, chloride ions are removed.
This thesis aimed to investigate the effect of various variables on ECE effieciency such as electrolyte solutions, concrete cover, reinforcement ratio, and charging intervals. This study was based on the experimental results of twelve reinforced concrete beams. The extraction process was performed for beams cast with self-compacting concrete (SCC). Chloride extraction effieciency was investigated in the mid-span and at the two edges of the tested beams. The experimental results show that the ECE efficiency ranged from 44% to 73% based on the examined variables. The structural behavior of the reinforced concrete beams before and after ECE under a four-point loading system was studied. The presence of chloride salts had a minimal effect on the structural behavior of RC beams after finishing the extraction process.
The first crack load of tested beams was decreased with a mean value of 2.22% when compared to control beams. The ultimate load of tested beams was decreased with a mean value of 4.60% when compared to control beams.