United States. Army. Corps of Engineers

James E. McDonald

Nancy F. Curtis

Engineer Research and Development Center (U.S.)

Repair, Evaluation, Maintenance, and Rehabilitation Research Program

This study was conducted to identify methods that have been used in the repair and rehabilitation of concrete dams. Information was obtained through literary searches, discussions with project personnel, and visits to project sites. Each case history includes a background of the project, the deficiency that necessitated repair or rehabilitation, and descriptions of materials and methods used in the repair or rehabilitation. When available, the cost of the repair project and the performance of the repair to date have been included. Case histories included in this report cover a range of deficiencies in concrete structures, including cracking, spalling, erosion, leakage, inadequate PMF capacity, expansion resulting from alkali-aggregate reaction, instability, and insufficient storage capacity.

Case Studies

Repair and Rehabilitation of Dams

The objective of this study was to develop, review, and analyze selected case histories involving applications of precast concrete in the repair or replacement of civil works structures. Information was obtained through literature searches; discussions with designers, precasters, and contractors; visits to project sites; and discussions with project personnel. Each case history includes a description of the project, the cause and extent of the deficiency that necessitated repair or replacement, design details, descriptions of materials and precasting procedures, construction techniques, costs, and performance to date of the precast concrete. Based on a review and analysis of these case histories, recommendations for future applications of precast concrete were developed, and areas that could benefit from research were identified. (MM).

James E. McDonald

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