期刊
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
卷 55, 期 2, 页码 91-102出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/1478422X.2019.1672008
关键词
Corrosion inhibitor; biosurfactant; rhamnolipids; carbon steel; concrete; civil engineering
The objective of this study was to evaluate the use of rhamnolipids (RLs) extracted from Pseudomonas aeruginosa as a possible eco-friendly inhibitor for the corrosion protection of rebars in concrete. Two application methods were tested: application of RLs as a coating on the steel (conditioning method) and addition of the RLs directly to the aggressive environment (addition method). Both methods were evaluated for their ability to protect steel in simulated concrete pore solution containing 0.5M NaCl. The results highlight a delay in the initiation of local corrosion followed by a rapid propagation rate of corrosion for conditioning method. This evolution is in relation with the heterogeneity of the formed RLs layers. The addition method provides a different film formation and better protection against corrosion. Using a 1gL concentration, the inhibition effect was observed at least for 24h of immersion.
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