The corrosion potential of stainless steel rebars in concrete: Temperature effect

被引：43
|
作者：
Deus, J. M. [1 ]
Freire, L. [1 ,2 ]
Montemor, M. F. [2 ]
Novoa, X. R. [1 ]
机构：
[1] Univ Vigo, ENCOMAT Grp, EEI, Vigo 36310, Spain
[2] Univ Tecn Lisboa, ICEMS, Inst Super Tecn, P-1049001 Lisbon, Portugal
来源：
CORROSION SCIENCE | 2012年 / 65卷
关键词：
Corrosion potential; Steel reinforced concrete; Stainless steel; Passivity; PASSIVE CORROSION; ELECTROCHEMICAL-BEHAVIOR; IMPEDANCE SPECTROSCOPY; CHLORIDE THRESHOLD; ALKALINE-SOLUTIONS; PORE SOLUTIONS; REINFORCEMENTS; DEPENDENCE; CHEMISTRY; MEDIA;
D O I：
10.1016/j.corsci.2012.09.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This work reports the temperature dependence of the corrosion potential of passive stainless steel rebars embedded in concrete or in alkaline media. The corrosion potential mirrored the temperature variations and the coefficient (mV/degrees C) increased as the average temperature range increased. These variations were observed in the long time-scale domain (several hours) and were interpreted based on temperature-induced changes in the chemistry of the passive layer. This behaviour and its interpretation have not been reported before and are of great importance from the point of view of understanding the electrochemical behaviour of stainless steel rebars and the inspection and durability of reinforced concrete structures. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：556 / 560
页数：5
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