Repair, Evaluation, Maintenance, and Rehabilitation Research Program. Repair of Waterstop Failures: Case Histories
Repair, Evaluation, Maintenance, and Rehabilitation Research Program. Repair of Waterstop Failures: Case Histories

Author: James E. McDonald

Publisher:

Published: 1986

Total Pages: 247

ISBN-13:

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Nearly every concrete structure has joints that must be sealed to ensure its integrity and serviceability. This is particularly true for for monolith joints in hydraulic structures such as concrete dams and navigation locks. Embedded waterstops are generally used to prevent water passage through the monolith joints of such structures. A waterstop failure can result in various problems ranging from minor leakage with cosmetic concern to significant hydraulic forces and structural overloading which could threaten the stability of a structure. The primary objective of this study was to identify materials and techniques which have been used in repair of waterstop failures. Also, based on a review and evaluation of current practices, a secondary objective was to identify those areas where research is needed to supplement existing technology.

Repair and Rehabilitation of Dams
Repair and Rehabilitation of Dams

Author: James E. McDonald

Publisher: Washington, D.C. : U.S. Army Corps of Engineers, Engineer Research and Development Center

Published: 1999

Total Pages: 272

ISBN-13:

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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.