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51314-4082-Innovation - Cost Effective Cathodic Protection System for Concrete Structures

Picture for Innovation - Cost Effective Cathodic Protection System for Concrete Structures
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Product Number: 51314-4082-SG
ISBN: 4082 2014 CP
Author: Miki Funahashi
Publication Date: 2014
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$20.00
$20.00
A thin layer of semi-conductive material was developed by combining with MMO coated titanium tape anodes for reinforced concrete structures.  This system was developed to overcome the problems experienced with  the existing cathodic protection systems including poor CP current distribution caused by near-short circuits and shallow concrete cover acid generation at the anode-concrete interface dryness of the anode-concrete interface for structures which are not exposed to direct moisture such as tunnels or deck soffit and substructures. In addition by eliminating complex CP anode engineering and installation works the CP system become user friendly and cost effective for many structure owners and the contractors. This paper will discuss the problems with existing CP systems and describe this innovative state-of-the art impressed current CP system. Data obtained from the laboratory and the field trials will be presented.      
A thin layer of semi-conductive material was developed by combining with MMO coated titanium tape anodes for reinforced concrete structures.  This system was developed to overcome the problems experienced with  the existing cathodic protection systems including poor CP current distribution caused by near-short circuits and shallow concrete cover acid generation at the anode-concrete interface dryness of the anode-concrete interface for structures which are not exposed to direct moisture such as tunnels or deck soffit and substructures. In addition by eliminating complex CP anode engineering and installation works the CP system become user friendly and cost effective for many structure owners and the contractors. This paper will discuss the problems with existing CP systems and describe this innovative state-of-the art impressed current CP system. Data obtained from the laboratory and the field trials will be presented.      
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This paper presents examples of anode array arrangements and corresponding attenuation characteristic calculations to enable optimization of current distribution.  It also presents examples of return current imbalances and how they may be corrected.
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