Electrochemical treatment to mitigate the alkali leaching from concrete to an aquatic environment
- Authors
- Ann, Ki Yong; Kim, Jaeh Wan; Jung, Min Sun
- Issue Date
- Apr-2013
- Publisher
- Scitec Publications Ltd.
- Keywords
- Alkali leaching; Concrete; Electrochemical treatment; Leachate
- Citation
- Applied Mechanics and Materials, v.316-317, pp 479 - 486
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- Applied Mechanics and Materials
- Volume
- 316-317
- Start Page
- 479
- End Page
- 486
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/30584
- DOI
- 10.4028/www.scientific.net/AMM.316-317.479
- ISSN
- 1660-9336
- Abstract
- In this study, the electrochemical treatment was used to block the leaching of alkali ions from concrete body, which would otherwise enhance the alkalinity of an aquatic environment and thus lead to a devastating contamination. The current density applied to the surface of concrete ranged 250, 500, 1000 mA/m2, and the duration of treatment was 1, 2, 4 weeks respectively. As a result, it was found that the treatment was effective in lowering the alkali leaching to an aquatic environment: an increase in the current density and duration of treatment resulted in a dramatic reduction of pH in the solution on the concrete surface. Its pH was reduced up to 8.33, whilst untreated concrete had a value of 12.91 in the pH. Simultaneously it is notable that the duration of treatment is a key shot to sustain the leachate blocking on the concrete surface. At the lower current density (250 mA/m2), the pH of the solution was eventually increased about 100 days after the completion of the treatment, while the pH at the highest current (1000 mA/m2) was mostly kept with no further increase. © (2013) Trans Tech Publications, Switzerland.
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.