Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Long-Term Performance of Corrosion Inhibitors Used in Repair of Reinforced Concrete Bridge Components
In 1987 the Strategic Highway Research Program (SHRP) launched multiple research efforts to study all aspects of reinforced concrete deterioration. One of the projects (SHRP C-103) under the Structures portion of SHRP evaluated the effectiveness of using corrosion inhibitors as a means for mitigating corrosion in reinforced concrete bridge components. That project, completed in 1993, involved a laboratory study and field validation, and concluded that corrosion inhibitors could be successfully applied with field repair and rehabilitation techniques. A follow-on study of the SHRP effort was initiated by the Federal Highway Administration (FHWA) in August 1994 and ended in July 1999. The primary objective of this multitask project was to determine the effectiveness of cathodic protection, electrochemical chloride extraction, and corrosion-inhibitor treatment systems installed during the SHRP effort through the long-term evaluation of 32 field test sites and a number of laboratory concrete slab specimens. One task the FHWA program required was monitoring the long-term performance of corrosion inhibitor treatments on selected components of four bridges that were treated and evaluated under SHRP C-103. Three evaluations over a period of 5 years were conducted on structures located in Minnesota, New York, and Pennsylvania, and two evaluations were conducted on a structure in Washington State. An analysis of the results concluded that neither of the corrosion inhibitors evaluated in this study, using the specified repairs and exposed to the specific environments, provided any corrosion-inhibiting benefit.
Long-Term Performance of Corrosion Inhibitors Used in Repair of Reinforced Concrete Bridge Components
In 1987 the Strategic Highway Research Program (SHRP) launched multiple research efforts to study all aspects of reinforced concrete deterioration. One of the projects (SHRP C-103) under the Structures portion of SHRP evaluated the effectiveness of using corrosion inhibitors as a means for mitigating corrosion in reinforced concrete bridge components. That project, completed in 1993, involved a laboratory study and field validation, and concluded that corrosion inhibitors could be successfully applied with field repair and rehabilitation techniques. A follow-on study of the SHRP effort was initiated by the Federal Highway Administration (FHWA) in August 1994 and ended in July 1999. The primary objective of this multitask project was to determine the effectiveness of cathodic protection, electrochemical chloride extraction, and corrosion-inhibitor treatment systems installed during the SHRP effort through the long-term evaluation of 32 field test sites and a number of laboratory concrete slab specimens. One task the FHWA program required was monitoring the long-term performance of corrosion inhibitor treatments on selected components of four bridges that were treated and evaluated under SHRP C-103. Three evaluations over a period of 5 years were conducted on structures located in Minnesota, New York, and Pennsylvania, and two evaluations were conducted on a structure in Washington State. An analysis of the results concluded that neither of the corrosion inhibitors evaluated in this study, using the specified repairs and exposed to the specific environments, provided any corrosion-inhibiting benefit.
Long-Term Performance of Corrosion Inhibitors Used in Repair of Reinforced Concrete Bridge Components
M. Islam (Autor:in) / A. A. Sohanghpurwala (Autor:in) / W. T. Scannell (Autor:in)
2003
64 pages
Report
Keine Angabe
Englisch
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