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J4  2011, Vol. 45 Issue (9): 1664-1671    DOI: 10.3785/j.issn.1008-973X.2011.09.025
土木工程     
外加电源式再碱化处理的耐久性探究
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
Durability investigation of realkalization treatment using
impressed current
TONG Yun-yun1, BOUTEILLER Véronique1, MARIE-VICTOIRE Elisabeth2,JOIRET Suzanne3
1.Central Laboratory of Road and Bridge of France 75732, Paris, France; 2. Research Laboratory of Historical
Monuments of France,Paris 77420, France; 3. Laboratory of Electrochemical Interfaces and Systems, Paris 75252, France
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摘要:

为了探究利用外加电源方式对钢筋混凝土进行再碱化处理的耐久性效果,人工碳化钢混板经过85 d的再碱化处理后,在恒温恒湿实验室里存放540 d,然后在室外自然老化360 d.期间,采用多种分析化学方法(酚酞指示剂法;混凝土粉样测试法;原子吸收光谱法)对混凝土的再碱化程度进行量化分析,同时应用多种电化学技术(自由电势、线性极化电阻技术、电化学阻抗技术)对钢筋腐蚀的活性变化进行评估.实验结果表明:采用外加电源方式对碳化钢筋混凝土进行再碱化处理后,混凝土保护层可在一定程度上被有效的再碱化,且具有很好的耐久性,但钢筋腐蚀的活性只在短期内(360 d 左右)有效下降,900 d后,其活性又恢复到处理前的水平.

Abstract:

In order to investigate the durability performance of the electrochemical realkalization treatment using impressed current, artificially carbonated reinforced concrete slabs, after an 8.5 d treatment, were firstly stored 540 d in air conditioned laboratory and then 360 d under natural aging. During this period, some analytical methods (phenolphthalein indicator tests, quantitative pH measurement by powder suspension and atomic absorption spectroscopy) were used to quantify the realkalization of concrete cover, and simultaneously some electrochemical techniques (rest potential, linear polarization resistance and electrochemical impedance technique) were also applied to evaluate the corrosion activity evolution of steel rebars. The results indicate that after realkalization treatment using impressed current, the concrete cover is more alkaline, and this concrete realkalization is durable upon time. However, the slowdown of corrosion activity of steel rebars is only clearly observed during 360 d. 900 d after treatment, the corrosion activity of steel rebars seems to return to its initial state before treatment

出版日期: 2011-09-01
:  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, MARIEVICTOIRE Elisabeth,JOIRET Suzanne. 外加电源式再碱化处理的耐久性探究[J]. J4, 2011, 45(9): 1664-1671.

TONG Yun-yun, BOUTEILLER Véronique, MARIE-VICTOIRE Elisabeth,JOIRET Suzanne. Durability investigation of realkalization treatment using
impressed current. J4, 2011, 45(9): 1664-1671.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.09.025        https://www.zjujournals.com/eng/CN/Y2011/V45/I9/1664

[1] 樊云昌,曹兴国,陈怀荣.混凝土中钢筋腐蚀的防护与修复[M].北京:中国铁道出版社,2001:172-175.
[2] TACHE G, RAHARINAIVO A, ARLIGUIE Grliguie et al. Réhabilitation du béton armé dégradé par la corrosion [M]. Paris, France: AFGC / CEFRACOR (Centre Franais de lAnticorrosion), 2003: 34-36.
[3] CAILLEUX E, MARIEVICTOIRE E, TEXIER A, et al. Experimental investigation of realkalisation treatments used for restoration of historical monuments made of reinforced concrete[C]∥ Proceedings of the First International Conference on Concrete Repair.SaintMalo, France : [s.n.], 2003 : 527-534.
[4] ELSENER B, ZIMMERMANN L, BURCHLER D, et al. Repair of reinforced concrete structures by electrochemical techniques:field experience [C]∥ Proceedings of Eurocorr’97. Norway: European federation of Corrosion Publications, 1998, 25 : 125-140.
[5] FD CEN/TS 140381, Electrochemical realkalisation and chloride extraction treatments for reinforced concrete:Part I Realkalisation [S]. Bruxelles: European Committee for Standardization, 2005.
[6] VILLAIN G, COCHET D, OLIVIER G ,et al. Vers un mode opératoire performant et discriminant de carbonatation accélérée des bétons pour ouvrages dart [M]. Paris: Bulletin de Liaison du Laboratoire des Ponts et Chaussées, 2007(267): 63-78.
[7] MIETZ J. Electrochemical realkalisation for rehabilitation of reinforced concrete structures [J]. Materials and Corrosion, 1995, 46 : 527-533.
[8] RASANEN V, PENTTALA V. The pH measurement of concrete and smoothing mortar using a concrete powder suspension [J]. Cement and Concrete Research, 2004, 34:813-820.
[9] STERN M, GEARY A. A theorical analysis of the shape of polarization curves [J]. Journal of the Electrochemical Society, 1957, 104:56.
[10] ASTM C87691 Standard test method for half cell potentials of uncoated reinforcing steel in concrete [S]. West Conshohocken, PA : ASTM International, 1999:6.
[11] ANDRADE C, ALONSO A. Test method for onsite corrosion rate measurement of steel reinforcement in concrete by means of the polarization resistance method. RILEM TC 154EMC: electrochemical techniques for measuring metallic corrosion – recommendations [J]. Matériaux et Constructions, 2003, 36 : 461-471.
[12] YEIH W, CHANG J J. A study on the efficiency of electrochemical realkalisation of carbonated concrete [J]. Construction and Building Materials, 2005, 19: 516-524.

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