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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Evaluation and Repair of Concrete Navigation Structures
Author(s): J. E. McDonald and T. C. Liu
Publication: Special Publication
Appears on pages(s): 321-338
Keywords: admixtures; anchors (fasteners); concretes; deterioration; evaluation; grout; locks (waterways); pullout tests; repairs; spalling; underwater structures; General
Abstract:The U.S. Army Corps of Engineers currently operates and maintains 269 navigation lock chambers along inland and coastal waterways. Approximately one-half of these structures were built prior to 1940. Consequently, the concrete in these structures does not contain intentionally entrained air and is, therefore, susceptible to deterioration from cycles of freezing and thawing. In response to a need for improved technology in evaluation and repair of such structures, the Corps of Engineers initiated the Repair, Evaluation, Maintenance, and Rehabilitation (REMR) research program. The objective of this comprehensive program is to develop effective and affordable technology for prolonging the service life of existing civil works structures. Individual REMR research studies, which relate to the evaluation and repair of concrete in a marine environment, are described in this paper. Results to date indicate that techniques and equipment are available for underwater evaluation and repair of concrete structures without the necessity of dewatering.
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