期刊
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
卷 49, 期 6, 页码 467-472出版社
TAYLOR & FRANCIS LTD
DOI: 10.1179/1743278214Y.0000000201
关键词
Passive corrosion; Concrete; SEM-EDS; Gravimetry
资金
- CEA
- ANDRA
- EDF
- Cecile Blanc (CEA - DEN/DPC/SEARS/LISL)
An experimental campaign was carried out to study the passivity of steel embedded in Ordinary Portland mortar. Mockup samples made of steel coupons (roughly polished or pre-corroded) embedded in mortar were tested under a relative humidity of 80, 90 and 95% or in a solution simulating the ground water of the French site of Bure (at 25 and 50 degrees C) and under aerated and deaerated conditions, during up to 3 years. The results of gravimetric measurements show that the average corrosion rates determined on polished coupons are typical of passive conditions (<1 mu m/year) and vary from 0.2 to 2.3 mu m/year for pre-corroded coupons. Moreover, characterisation (Raman spectroscopy and SEM-EDS) of the samples tested in aerated conditions points out a stable state in term of the nature of the corrosion products and of the composition of the steel/mortar interface. In de-aerated conditions, magnetite is observed in the corrosion products.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据