Effect of Electrochemical Chloride Extraction on the Bond Performance between Steel Bar and Concrete

Yu Xia Guo; Jing Xing Gong

doi:10.4028/www.scientific.net/AMR.243-249.5536

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 243-249Effect of Electrochemical Chloride Extraction on...

Effect of Electrochemical Chloride Extraction on the Bond Performance between Steel Bar and Concrete

Abstract:

Based on beam specimens of 100mm×100mm×400mm, the effect of electrochemical chloride extraction (ECE) on bond performance between steel bar and concrete contaminated by chloride was studied by determining the bond strength of them. During the test, 1%, 2% and 3% NaCl by weight of cement were mixed into concrete to simulate chloride contamination. In the process of ECE, four kinds of current density (1, 2, 3, 5 A/m² of steel bar area) and electric quantity (500, 1000, 1500 and 3000 A.h/m² of steel bar area) were taken into account, respectively. It is indicated that the bond strength between steel bar and concrete was degraded after ECE treatment, the more the current and the electric quantity of ECE are, the more the loss of bond strength is, and the initial content of chloride in concrete has a little influence on the bond strength.

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Periodical:

Advanced Materials Research (Volumes 243-249)

Pages:

5536-5540

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.243-249.5536

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Online since:

May 2011

Authors:

Yu Xia Guo, Jing Xing Gong

Keywords:

Concrete Bond Strength, Current Density, Electric Quantity, Electrochemical Chloride Extraction, Initial Content of Chloride

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