期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 25, 期 5, 页码 2655-2662出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2010.12.015
关键词
Reinforced concrete; Electrochemistry; Cathodic protection; Anode
资金
- Specialized Research Fund for the Doctoral Programme of Higher Education [20070247063]
- Tongji University
A type of conductive overlay material made of carbon fibre filled cementitious mortar has been proposed for cathodic protection of reinforced concrete structures. It possesses advantages over many other anode materials. To evaluate its potential application in practice, the mechanical, electrical, and electrochemical properties of the material have been investigated. The addition of carbon fibres enhances the strength and toughness of the mortar, as well as the electrical performance. Accelerated anodic polarisation tests and impedance measurements were employed to study the electrochemical behaviour. Both of the fibre content and pore solution composition influence the electrochemical property and, in particular, chloride ions have been shown to have a negative effect on the material. Results indicate that the optimum fibre content should be above but in the vicinity of the percolation threshold. The work confirms the possible utilization of this type of anode material in cathodic protection of reinforced concrete. (C) 2010 Elsevier Ltd. All rights reserved.
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