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J4  2011, Vol. 45 Issue (11): 1991-1996    DOI: 10.3785/j.issn.1008-973X.2011.11.017
土木工程     
钢筋腐蚀程度对电化学再碱化处理效果的影响
童芸芸1, BOUTEILLER Véronique1, MARIE-VICTOIRE Elisabeth2,
JOIRET Suzanne3
1.法国道桥研究所,巴黎 75732,法国;2.法国历史文物研究所,巴黎 77420,法国;
3.巴黎六大电化学实验室,巴黎75252,法国
Impact of steel rebars corrosion degree on the effectiveness
of realkalization treatment
TONG Yun-yun1, BOUTEILLER Véronique1, MARIE-VICTOIRE Elisabeth2, JOIRET Suzanne3
1.Central Laboratory of Road and Bridge of France , Paris 75732,France; 2. Research Laboratory of
Historical Monuments of France, Paris 77420,France; 3. Laboratory of Electrochemical Interfaces and
Systems, University of Paris VI,Paris 75252 ,France
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摘要:

为了研究碳化混凝土板内钢筋腐蚀程度对电化学再碱化处理效果的影响,对一组钢筋轻度腐蚀和另一组钢筋重度腐蚀的碳化混凝土板进行外加电源式再碱化处理,并用粉样pH值测试法和多种电化学技术(自由电势,线性极化电阻技术,电化学阻抗技术)评估处理效果.跟踪混凝土酸碱度以及钢筋腐蚀程度效果1 a的结果显示:无论处理前钢筋的腐蚀程度如何,再碱化处理技术能够有效地将混凝土的pH提高到10.5,钢筋腐蚀速率降低到10 μm/a.但是,重度腐蚀钢筋在处理后的腐蚀活性降低量更为明显.

Abstract:

In the aim to study how corrosion degree of steel rebars embedded in carbonated concrete influences the effectiveness of electrochemical realkalization treatment, the realkalization using impressed current was applied on one series of slabs with lightly corroded rebars and another series of slabs with heavily corroded rebars. After treatment, the pH measurements using concrete powder suspension and also some electrochemical techniques (rest potential, linear polarization resistance and electrochemical impedance technique) were used to evaluate the treatment effectiveness. The evaluation following of concrete pH values and rebars corrosion during one year shows that, regardless of the initial corrosion degree, the treatment leads to a higher concrete alkalinity to about pH=10.5 and a lower steel rebars corrosion rate to about 10 μm/year. However the corrosion activity slowdown is more evident on initially heavily corroded rebars after treatment.

出版日期: 2011-12-08
:  TU 503  
基金资助:

法国设备部和文化部合作博士课题资助项目.

作者简介: 童芸芸 (1978-),女,博士,工程师,从事材料腐蚀研究.E-mail: nuagestong@gmail.com
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引用本文:

童芸芸, BOUTEILLER Véronique, MARIE-VICTOIRE Elisabeth, JOIRET Suzanne. 钢筋腐蚀程度对电化学再碱化处理效果的影响[J]. J4, 2011, 45(11): 1991-1996.

TONG Yun-yun, BOUTEILLER Véronique, MARIE-VICTOIRE Elisabeth, JOIRET Suzanne. Impact of steel rebars corrosion degree on the effectiveness
of realkalization treatment. J4, 2011, 45(11): 1991-1996.

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https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.11.017        https://www.zjujournals.com/eng/CN/Y2011/V45/I11/1991

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