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| DISTRIBUTION OF CORROSION POTENTIAL AND CORROSION CURRENT OF REBARS IN CONCRETE STRUCTURE NEARBY LIQUID LEVEL |
| FENG Xingguo;TANG Yuming; ZHAO Xuhui; ZUO Yu |
| College of Materials Science and Engineering; Beijing University of Chemical Technology; Beijing 100019 |
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Abstract Part of the reinforced concrete sample was put into 3.5% NaCl solution, a titanium bar was deposited in concrete as reference electrode. the potential and current between reinforcing bars (rebars) and titanium was tested separately, the microcell current of samples was calculated by polarization resistence Rp. The results showed that the current of rebars placed in solution decreases with increase of depth, the current of rebars placed above solution reduces with the height of sample position. This indicates that in solution the rebar corrosion has a close relationship with the concentration of oxygen, the rebar corrosion has a close relationship with the humidity of the concrete above the solution.
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Received: 29 October 2008
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Corresponding Authors:
ZUO Yu
E-mail: zuoy@mail.buct.edu.cn
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