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Stray Current Induced Corrosion Control in Reinforced Concrete by Addition of Carbon Fiber and Silica Fume

Published online by Cambridge University Press:  27 March 2015

Zhipei Chen ,
Dessi Koleva ,
Eduard Koenders  and
Klaas van Breugel
Zhipei Chen
Affiliation:
Faculty of Civil Engineering and Geosciences, Department Materials and Environment, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, The Netherlands
Dessi Koleva
Affiliation:
Faculty of Civil Engineering and Geosciences, Department Materials and Environment, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, The Netherlands
Eduard Koenders
Affiliation:
Faculty of Civil Engineering and Geosciences, Department Materials and Environment, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, The Netherlands
Klaas van Breugel
Affiliation:
Faculty of Civil Engineering and Geosciences, Department Materials and Environment, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, The Netherlands
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Abstract

Stray current arising from direct current electrified traction systems and then circulating in reinforced concrete near railways is known to induce corrosion on embedded steel reinforcement. The present paper will review the principles of stray current induced corrosion in reinforced concrete, which is relatively uncommon but with significant impact in practice.

Within one of the approaches to ease this kind of specific corrosion in reinforced concrete, carbon fibres (CF) can be added to enhance the conductivity of concrete, subsequently reduce the stray current density and/or direct the stray current dissipation in a desired manner. The side effects (such as increasing the bulk matrix porosity) caused by CF, which can in turn reduce the general corrosion resistance of reinforced concrete, will be compensated by adding silica fume (SF). The combination of CF and SF can be a potentially feasible and original application to reduce the risk of stray current induced corrosion in reinforced concrete, without obvious negative side effects.

Keywords

compositeadditivescorrosion
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1768: Symposium 6D – Concrete with Smart Additives and Supplementary Cementitious Materials to Improve Durability and Sustainability of Concrete Structures. , 2015 , imrc2014-6d-007
Copyright
Copyright © Materials Research Society 2015 

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