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The distribution of hydration products at the steel-concrete interface for concretes subjected to electrochemical treatment
- Authors
- Reou, J. S.; Ann, K. Y.
- Issue Date
- Jun-2010
- Publisher
- Pergamon Press Ltd.
- Keywords
- Steel; Concrete; SEM; Passivity
- Citation
- Corrosion Science, v.52, no.6, pp.2197 - 2205
- Indexed
- SCIE
SCOPUS
- Journal Title
- Corrosion Science
- Volume
- 52
- Number
- 6
- Start Page
- 2197
- End Page
- 2205
- ISSN
- 0010-938X
- Abstract
- Mortar specimens containing steel ribbon after electrochemical treatment, were manufactured to mimic the steel-concrete interface for microscopic analysis of SEM image containing the steel-concrete interface. The SEM image was quantified to determine the distribution of hydrations at the steel interface. As a result, it was found that electrochemical treatment increased the content of calcium hydroxide up to about 13%, imposing the passivity of steel. However, an increase in the current density resulted in increased porosity, presumably leading to a debondment in particular at the greatest current of 750 mA/m(2). After the treatment unhydrated cement grains increased by 2-3 times. (C) 2010 Elsevier Ltd. All rights reserved.
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Related Researcher
- ANN, KI YONG
- ERICA 공학대학 (DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING)