Mechanical properties of the rust layer induced by impressed current method in reinforced mortar

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• 作者：S. Caré ; Q.T. Nguyen ; V. L'Hostis ; Y. Berthaud
• 关键词：SEM ; Corrosion ; Mechanical properties ; Steel reinforced mortar ; Rust
• 刊名：Cement and Concrete Research
• 出版年：2008
• 出版时间：August 2008
• 年：2008
• 卷：38
• 期：8-9
• 页码：1079-1091
• 全文大小：2367 K

文摘

This paper describes the mechanical effects of rust layer formed in reinforced mortar through accelerated tests of corrosion. The morphological and physico-chemical properties (composition, structures) of the corrosion system were characterized at different stages by using optical microscope and scanning electron microscope coupled with energy dispersive spectroscopy. The corrosion pattern was mainly characterized by a rust layer confined at the interface between the steel and the mortar. Expansion coefficient of rust products was determined from the rust thickness and the Faraday's law.