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Determination of im...
Determination of impressed current efficiency during accelerated corrosion of reinforcement
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- Hong, Shuxian (författare)
- Shenzhen University
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- Zheng, Fan (författare)
- Shenzhen University
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- Shi, Guiyun (författare)
- Shenzhen University
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- Li, Jiayao (författare)
- Shenzhen University
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- Luo, Xiaolong (författare)
- Shenzhen University
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- Xing, F. (författare)
- Shenzhen University
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- Tang, Luping, 1956 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Shenzhen University
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- Dong, Biqin (författare)
- Shenzhen University
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(creator_code:org_t)
- Elsevier BV, 2020
- 2020
- Engelska.
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Ingår i: Cement and Concrete Composites. - : Elsevier BV. - 0958-9465. ; 108
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Impressed current technique is a widely adopted method for accelerating corrosion of steel reinforcement. The mass loss of steel can be theoretically estimated by Faraday's law with the assumption that all of the impressed current participated in the corrosion reaction. In the present study, accelerated corrosion process of reinforcing steel with impressed current was non-destructively traced by X-ray micro-computed tomography (μCT) with high accuracy. The mass loss of steel at different accelerated corrosion periods was analyzed and the efficiency of impressed current was calculated. It was found that the mass loss of steel did not always follow Faraday's law, and impressed current efficiencies varied with different corrosion periods. In the early corrosion periods, the water electrolysis occurred and lowered the current efficiency due to the high anode potential. While in the late corrosion periods, the natural corrosion caused the current efficiency to exceed 100%.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Water Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Korrosionsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Corrosion Engineering (hsv//eng)
Nyckelord
- Current efficiency
- Accelerated corrosion
- Cement-based material
- Faraday's law
- X-ray micro-computed tomography
- Reinforcing steel
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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