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Cathodic Protection for Protecting Prestressed Concrete

by Kiyoshi Katawaki, Public Works Research Inst, Ibaraki-ken, Japan,
Hiroyuki Sakamoto, Public Works Research Inst, Ibaraki-ken, Japan,
Akira Ishikawa, Public Works Research Inst, Ibaraki-ken, Japan,
Kazuhiro Ikawa, Public Works Research Inst, Ibaraki-ken, Japan,
Satoru Yamamoto, Public Works Research Inst, Ibaraki-ken, Japan,



Document Type: Proceeding Paper

Part of: Pacific Rim TransTech Conference?Volume II: International Ties, Management Systems, Propulsion Technology, Strategic Highway Research Program

Abstract:

Due to the good effect of corrosion protection of reinforcing steel bars, even in concrete highly chloride contaminated, cathodic protection for concrete structure now carried out as a standard to prevent salt corrosion in severe environments. In order to develop the design of cathodic protection, full scale size trials were carried out on test beams of prestressed concrete. As a result, it has been recognized that the cathodic protection are practically easily applied and good effective for repairing concrete beam damaged by chloride corrosion. Therefore a draft manual for the cathodic protection of steel materials in concrete structures has been prepared on the basis of these test results. Hereafter, this manual will be used as the guideline in applying cathodic protection to concrete bridges.

Subject Headings: Reinforced concrete | Concrete beams | Concrete bridges | Cathodic protection | Corrosion | Prestressing | Steel structures

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