An electrochemical and microstructural characterization of steel-mortar admixed with corrosion inhibitors

被引：0
作者：
XianMing Shi
ZhengXian Yang
Tuan Anh Nguyen
ZhiYong Suo
Recep Avci
ShiZhe Song
机构：
[1] Tianjin University,School of Materials Science and Engineering
[2] College of Engineering,Corrosion and Sustainable Infrastructure Laboratory, Western Transportation Institute
[3] Montana State University,Civil Engineering Department
[4] Montana State University,Imaging and Chemical Analysis Laboratory, Department of Physics
[5] Montana State University,undefined
来源：
Science in China Series E: Technological Sciences | 2009年 / 52卷
关键词：
corrosion inhibitor; rebar corrosion; steel-mortar interface; FESEM; EDX; XPS; EIS;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The present research brings new insights on the role of admixed corrosion inhibitors in the processes of cement hydration and rebar corrosion. The admixing of NaCl and the corrosion inhibitors in fresh mortar was found to alter the morphology and microstructure of the hardened mortar at the steel-mortar interfacial region. The admixing of the inhibitors increased the risk of carbonation of cement hydrates at the steel-mortar interfacial region, but partially displaced chloride ions. Chloride and the admixed inhibitors facilitated the formation of different cement hydrates and affected chloride binding at the steel-mortar interfacial region. The admixing of all three inhibitors was found to increase the polarization resistance of steel, indicating reduced corrosion rate of the steel over 48-day exposures to salt ponding
引用
收藏
页码：52 / 66
页数：14
相关论文
共 63 条
[1]  
Lane D. R.(2002)Corrosion inhibitors in concrete-Part I: The principles Corrosion inhibiting admixture for concrete 6 340-1781
[2]  
Melendez J. A.(1998)Study on corrosion inhibitors for concrete application Cement Concrete Res 28 1775-642
[3]  
Munteanu V. F.(2000)Migrating corrosion inhibitor evaluated in concrete containing various contents of admixed chlorides Cement Concrete Res 30 635-267
[4]  
Hansson C. M.(2002)Chemistry of corrosion inhibitors Cement Concrete Res 32 259-189
[5]  
Mammolite L.(2004)The mechanism of nitrite inhibition of chloride attack on reinforcing steel in alkaline aqueous environments Cement Concrete Comp 26 181-48
[6]  
Hope B. B.(1979)Nitrite binding in cement Mater Performance 18 45-1100
[7]  
Monticelli C.(2001)Effectiveness of corrosion inhibitors and their influence on the physical properties of Portland cement mortars Cement Concrete Res 31 1093-88
[8]  
Frignani A.(1970)Protection of steel embedded in chloride containing concrete by means of inhibitors Highway Res Rec 328 77-589
[9]  
Trabanelli G. A.(1998)Organic-based corrosion-inhibiting admixture for reinforced concrete Cement Concrete Res 28 577-207
[10]  
Morris W.(1992)Multi-functional organic corrosion inhibitor Concrete Intl 14 45-608
1234567