Effect of fly ash on concrete reinforcement corrosion studied by EIS

被引：147
|
作者：
Montemor, MF
Simoes, AMP
Salta, MM
机构：
[1] Univ Tecn Lisboa, Dept Chem Engn, Inst Super Tecn, P-1049001 Lisbon, Portugal
[2] Lab Nacl Engn Civil, P-1700066 Lisbon, Portugal
来源：
CEMENT & CONCRETE COMPOSITES | 2000年 / 22卷 / 03期
关键词：
corrosion; reinforcement; fly ash; impedance; EIS; electrochemical techniques;
D O I：
10.1016/S0958-9465(00)00003-2
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The corrosion process of steel embedded in concrete with various amounts of fly ash (up to 50% of the total binder) was tested under complete and partial immersion, in sodium chloride solution. The corrosion process was followed by monitoring of open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS). Fly ash addition has led to a raise of concrete resistivity and of the time for corrosion initiation and to a decrease of corrosion rate. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：175 / 185
页数：11
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