|
|
|
| CORROSION DETECTION OF STEEL IN CONCRETE BY USE OF GALVANOSTATIC PULSE TECHNIQUE |
| XU Jing, YAO Wu |
| Key Labratory of Advance Civil Engineering Materials of the Ministry of Education, Tongji University, Shanghai 200092 |
|
|
|
|
Abstract Corrosion behavior of steel in concrete with different chloride ion concentration was studied by means of galvanostatic pulse, which is introduced as a new type of non-destructive technique nowadays. Potential transient technique galvanostatically induced is used to determine the corrosion rate with two data analysis methods, followed by comparing to that of the traditional linear polarization method. It is shown that the choice of perturbation magnitude of signal to be applied depends strongly on the corrosion state of steel. Too small current makes it difficult to separate the potential signal from background noise, whereas higher current results in intensive polarization. Thus, neither of two is beneficial for the data processing. Anodic current conversion method is fast and efficient in analyzing the galvanostatic pulse curves; however, this approach has some limitations in case of large applied current.
|
|
Received: 27 June 2008
|
|
|
|
Corresponding Authors:
XU Jing
E-mail: 0420060017@smail.tongji.edu.cn
|
| [1] |
Feliu S，Gonzalez J A，Miranda J M，et al. Possibilities and problems of in situ techniques for measuring steel corrosion rates in large reinforced concrete structures [J]. Corros. Sci, 2005, 47(1):217-238 |
| [2] |
Broomfield J P，Davies K，Hladky K. The use of permanent corrosion monitoring in new and existing reinforced concrete structures [J]. Cem. Concr. Comp, 2002, 24(1):27-34 |
| [3] |
Hong D H．Corrosion and Protection of Rebar in Concrete [M]．Beijing：China Railway Press，1998． |
| [4] |
(洪定海．混凝土中钢筋的腐蚀与保护 [M]．北京：中国铁道出版社，1998) |
| [5] |
Lu Z L．Corrosion behavior and mechanism of reinforced steel in acidic environment [J]．J. Chin. Soc. Corros.Prot.，2007，27(2)：119-123 |
| [6] |
鲁照玲. 酸性气氛下钢筋混凝土结构腐蚀行为及其机理 [J]. 中国腐蚀与防护学报, 2007, 27(2):119-123浏览 |
| [7] |
Chen L T，Zhang S P，Zou G J，et al．Technology for corrosion monitoring of reinforcing steel bars in concrete and the application [J]．J. Mater.Prot.，2007，40(5)：52-55 |
| |
(陈澜涛，张三平，邹国军等．钢筋混凝土腐蚀监测技术及其应用 [J]．材料保护，2007，40(5)：52-55) |
| [8] |
Hu J F，Li G X，Deng K，et al．Study on non-uniform corrosion of rebar embedded in concrete by wire-beam electrode [J]．J. Chin. Soc. Corros. Prot.，2005，25(2)：88-92 |
| [9] |
胡金丰，李国希，邓恺等. 用丝束电极研究混凝土中钢筋腐蚀的不均匀性 [J]. 中国腐蚀与防护学报, 2005, 25(2):88-92浏览 |
| [10] |
Li H，Wu J H，Qi G T．Electrochemical performance of RuTiSnMn/Ti anode [J]．J. Chin.Soc. Corros. Prot.，2004，24(5)：280-283 |
| [11] |
李辉. 吴建华．齐公台RuTiSnMn/Ti阳极的电化学性能 [J]. 中国腐蚀与防护学报, 2004, 24(5):280-283浏览 |
| [12] |
Hu R G，Du R G，Shao M H，et al．In situ STM study on dynamic behavior of corrosion and inhibition of rebar steel in different simulated concrete pore solution [J]．J. Chin. Soc.Corros. Prot.，2003，23(6)：321-325 |
| [13] |
胡融刚，杜荣归，绍敏华等. 原位STM研究钢筋在模拟混凝土孔溶液中腐蚀和缓蚀动态行为 [J]. 中国腐蚀与防护学报, 2003, 23(6):321-325浏览 |
| [14] |
Wu J H，Zhao Y T．Corrosion monitoring/detecting of rebar in concrete[J]．Corros. Prot.， 2003，24(10)：421-431． |
| |
(吴建华，赵永韬．钢筋混凝土的腐蚀监测／检测 [J]．腐蚀与防护，2003，24(10)：421-431) |
| [15] |
Zou G J，Chen L T，Zhen Q F，et al．Corrosion behavior of reinforcing steel bars of reinforced concrete in water environment studied by resistance probe [J]．J. Mater. Prot.，2007，40(4)：11-13 |
| |
(邹国军，陈澜涛，郑弃非等．用电阻探针法研究水环境中钢筋混凝土的腐蚀行为 [J]．材料保护，2007，40(4)：11-13) |
| [16] |
Geng O，Li G，Yuan Y S．Application of electrochemical detection techniques in concrete reinforcement corrosion [J]．Concrete，2005，184(2)：20-23 |
| |
(耿欧，李果，袁迎曙．电化学检测技术在混凝土内钢筋腐蚀研究中的应用现状与展望 [J]．混凝土，2005，184(2)：20-23) |
| [17] |
Ding Y L，Dong Z H，Zhou H L，et al．Field corrosion monitoring of rebars in concrete by guard ring electrode method [J]．J. Chin. Soc. Corros.Prot.，2006，26(5)：257-262 |
| [18] |
丁元力，董泽华，周华林等. 基于护环技术的混凝土中钢筋腐蚀监测研究 [J]. 中国腐蚀与防护学报, 2006, 26(5):257-262浏览 |
| [19] |
Andrade C，Keddam M，Novoa X R，et al. Electrochemical behaviour of steel rebars in concrete: influence of environmental factors and cement chemistry [J]. Electrochim. Acta, 2001, 46(24/25):3905-3912 |
| [20] |
Stern M，Geary A L. Electrochemical polarisation：ⅠA theoretical analysis of the shape of polarization curves [J]. J. Electrochem.Soc, 1957, 104(1):56-63 |
| [21] |
Gonzclez J A，Molina A，Escudero M L，et al. Errors in the electrochemical evaluation of very small corrosion rates-I：polarization resistance method applied to corrosion of steel in concrete [J]. Corros.Sci, 1985, 25(10):917-930 |
| [22] |
Glass G K，Page C L，Short N R，et al. An investigation of galvanostatic transient methods used to monitor the corrosion of rate of steel in concrete [J]. Corros.Sci, 1993, 35(5-8):1585-1592 |
| [23] |
Mietz J，Isecke B. Monitoring of concrete structures with respect to rebar corrosion [J]. Constr. Build. Mater, 1996, 10(5):367-373 |
| [24] |
Holloway M，Sykes J M. Studies of the corrosion of mild steel in alkali-activated slag cement mortars with sodium chloride admixtures by a galvanostatic pulse method [J]. Corros. Sci, 2005, 47(12):3097-3110 |
| [25] |
Birbilis N，Nairn K M，Forsyth M. On the electrochemical response and interfacial properties of steel-Ca(OH)2 and the steel-concrete system measured using galvanostatic pulses [J]. Electrochim. Acta, 2004, 49(25):4331-4339 |
| [26] |
Birbilis N，Nairn K M，Forsyth M. Transient response analysis of steel in concrete [J]. Corros. Sci, 2003, 45(9):1895-1902 |
| [27] |
Newton C J，Sykes J M. A galvanostatic pulse technique for investigation of steel corrosion in concrete [J]. Corros.Sci, 1988, 28(11):1051-1074 |
| [28] |
Gonzalez J A，Cobo A，Gonzalez M N，et al. On-site determination of corrosion rate in reinforced concrete structures by use of galvanostatic pulses [J]. Corros. Sci, 2001, 43(4):611-625 |
| [29] |
Glass G K，Page C L，Short N R，et al. The analysis of potentiostatic transients applied to the corrosion of steel in concrete [J]. Corros.Sci, 1997, 39(9):1657-1663 |
| [30] |
Sathiyanarayanan S，Natarajan P，Saravanan K，et al. Corrosion monitoring of steel in concrete by galvanostatic pulse technique [J]. Cem. Concr.Comp, 2006, 28(7):630-637 |
| [31] |
Cao C N．Principle ofCorrosion Electrochemistry [M]． Beijing：Chemical Industry Press，2004 |
| [32] |
(曹楚南．腐蚀电化学原理 [M]．北京：化学工业出版社，2004) |
| [33] |
Gonzalez J A，Miranda J M，Feliu S. Considerations on reproducibility of potential and corrosion rate measurements in reinforced concrete [J]. Corros. Sci, 2004, 46(10):2467-2485 |
| [34] |
Glass G K，Hassanein A M，Buenfeld N R. Cathodic protection afforded by an intermittent current applied to reinforced concrete [J]. Corros. Sci, 2001, 43(6):1111-1131 |
|
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
