Chloride Removal from Polluted Reinforced Self-Compacting Concrete Using Electrochemical Chloride Extraction

Document Type : Original Article

Authors

1 Department of Civil Engineering, Faculty of Engineering, Menoufia University, Shibin el Kom, Egypt

2 Civil Department, Faculty of Engineering, Menoufia University, Egypt

3 Civil Engineering, Faculty of Engineering, Menofia University

4 Department of Civil Engineering, Faculty of Engineering, Kafrelsheikh University, Kafr el-Sheikh, Egypt

Abstract

One of the primary causes of concrete deterioration is chloride-induced corrosion, which represents a threat to sustainability. The damaged regions are typically removed in traditional repair methods to restore corroded structures. Another technique involving electrochemical chloride extraction (ECE) has grown in popularity regarding its effectiveness as a non-destructive treatment. This research aim was to investigate various ECE variables including electrolyte solutions, concrete cover, reinforcement ratio, and charging intervals to optimize ECE. Chloride extraction was investigated in the mid-span and at the two edges of the tested beams. This study was based on the experimental results of 17 reinforced concrete beams. The extraction process was performed for beams cast with self-compacting concrete (SCC). Self-compacting concrete has low pores, which may affect the extraction process. The experimental results show that the ECE efficiency ranged from 44% to 73% based on the examined variables. Also, the presence of chloride salts had a minimal effect on the structural behavior of RC beams after finishing the extraction process.

Keywords

ERJ. Engineering Research Journal
Volume 46, Issue 2
issued on 1/4/2023 in 4 Parts: Part (1) Electrical Engineering, Part (2): Production Engineering, Part (3): Civil Engineering, Part (4) Architectural Engineering,
April 2023
Pages 261-270

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