Field Evaluation of the Long Term Corrosion Protection Characteristics of Calcium Nitrite in Prestressed Concrete Bridge Girders
Field Evaluation of the Long Term Corrosion Protection Characteristics of Calcium Nitrite in Prestressed Concrete Bridge Girders

Author: Eric P. Steinberg

Publisher:

Published: 1996

Total Pages: 156

ISBN-13:

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The deterioration of reinforcement in prestressed concrete bridge structures is of enormous importance because it can lead to high costs of bridge repair and/or replacement. To reduce corrosion of reinforcement in prestressed concrete bridge girders, the Ohio DOT requires the use of the corrosion inhibitor calcium nitrite or epoxy coated reinforcement. The objective of this work was to determine the effectiveness of calcium nitrite.

Reliability of Corroded Steel Bridge Girders
Reliability of Corroded Steel Bridge Girders

Author: Irene A. Cordahi

Publisher:

Published: 2006

Total Pages: 80

ISBN-13:

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Corrosion is one of the main causes of deterioration of bridges. Structures exposed to harsh environmental conditions are subjected to time-variant changes of their load-carrying capacity. Thus, there is a need for an evaluation to accurately assess the actual condition and predict the remaining life of a structure. System reliability can be used as an efficient tool in evaluation of existing structures. The traditional approach is based on the consideration of individual components rather than the system as a whole. However, it has been observed that the load-carrying capacity of the whole system often is much larger than what is determined by the design of components. Quantification of this difference is the scope of this study.

Evaluation and Repair Procedures for Precast/prestressed Concrete Girders with Longitudinal Cracking in the Web
Evaluation and Repair Procedures for Precast/prestressed Concrete Girders with Longitudinal Cracking in the Web

Author: Maher K. Tadros

Publisher:

Published: 2010

Total Pages: 80

ISBN-13:

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This report establishes a user's manual for the acceptance, repair, or rejection of precast/prestressed concrete girders with longitudinal web cracking. The report also proposes revisions to the AASHTO LRFD Bridge Design Specifications and provides recommendations to develop improved crack control reinforcement details for use in new girders. The material in this report will be of immediate interest to bridge engineers.