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Application of Protective Coating for Rehabilitation of Wisconsin Concrete Bridges

Application of Protective Coating for Rehabilitation of Wisconsin Concrete Bridges
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This paper describes the results of a research study to determine the effectiveness of various rehabilitation materials and techniques for concrete bridges. This work reflects the needs for identifying effective materials and techniques to offer protection against corrosion of steel in concrete as well as patch repair in concrete girders. 

Product Number: 41208-415-SG
Author: Al Ghorbanpoor, Edward A. Fitzgerald, Habib Tabatabai
Publication Date: 2008
Industry: Coatings
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$20.00
$20.00

This paper describes the results of a research study to determine the effectiveness of various rehabilitation materials and techniques for concrete bridges. This work reflects the needs for identifying effective materials and techniques to offer protection against corrosion of steel in concrete as well as patch repair in concrete girders. The study was sponsored by the Wisconsin Highway Research Program (WHRP) of the Wisconsin Department of Transportation. As a part of this study, all surfaces near the ends of five new prestressed concrete I-girders were treated with various coating materials and the girders were subjected to cyclic exposures of a sodium chloride solution and a galvanostatic accelerated corrosion test for a period of 18 months. The coating or treatment materials used in the study included a polymer resin coating, an epoxy coating, a solvent based silane penetrating sealer, a microsilica and latex modified patch material, a water base epoxy and cementitious patch material, and a fiber reinforced polymer material. The experimental program determined the effectiveness of the materials and techniques used for protection against corrosion. Through new specification requirements, the Wisconsin Department of Transportation will implement the results of this study in the construction of new prestressed concrete bridges to achieve better protection against corrosion of prestressing steel at the ends of prestressed I-girders.

This paper describes the results of a research study to determine the effectiveness of various rehabilitation materials and techniques for concrete bridges. This work reflects the needs for identifying effective materials and techniques to offer protection against corrosion of steel in concrete as well as patch repair in concrete girders. The study was sponsored by the Wisconsin Highway Research Program (WHRP) of the Wisconsin Department of Transportation. As a part of this study, all surfaces near the ends of five new prestressed concrete I-girders were treated with various coating materials and the girders were subjected to cyclic exposures of a sodium chloride solution and a galvanostatic accelerated corrosion test for a period of 18 months. The coating or treatment materials used in the study included a polymer resin coating, an epoxy coating, a solvent based silane penetrating sealer, a microsilica and latex modified patch material, a water base epoxy and cementitious patch material, and a fiber reinforced polymer material. The experimental program determined the effectiveness of the materials and techniques used for protection against corrosion. Through new specification requirements, the Wisconsin Department of Transportation will implement the results of this study in the construction of new prestressed concrete bridges to achieve better protection against corrosion of prestressing steel at the ends of prestressed I-girders.

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