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Title |
Changes in Corrosion Density of Tendon Under Accelerated Corrosive Condition Considering Chloride-hydroxide Concentration
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Authors |
방자호(Ja-Ho Bang) ; 이현우(Hyeon-Woo Lee) ; 권성준(Seung-Jun Kwon) |
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DOI |
https://doi.org/10.11112/jksmi.2024.28.4.21 |
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Keywords |
부식영향인자; 텐던; 부식전류; 염소-수산화이온 비; 부식량; 소선 Corrosion influencing factor; Tendon; Corrosion density; [Cl - ]/[OH - ] ratio; Corrosion weight; Wire strand |
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Abstract |
In this study, the corrosion density of tendon was evaluated with changing chloride and hydroxide ions. To simulate an accelerated corrosive environment, wet sand was used instead of concrete, and the tests were conducted considering three levels of chloride concentration (0.0, 0.125, and 0.250mol/l ) and three [Cl - ]/[OH - ] ratios (0.3, 0.6, and 0.9). The corrosion density was measured to 5.13 μA/cm² at 0.0mol/l and increased with the chloride concentration. Additionally, no significant differences were observed over 0.125mol/l of chloride concentration. When [OH - ] increased with a given chloride concentration (0.125mol/l), the corrosion density decreased linearly, showing effective control of corrosion density even at high chloride concentrations. Notably, the measured corrosion amounts were lower than those under of 0.0mol/l condition. Furthermore corrosion density and influencing parameters were normalized with the maximum and minimum results, and the relation between them was analyzed.
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