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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: Performance Criteria for Selection of Repair Materials
Author(s): A. M. Vaysburd, J. E. McDonald, P. H. Emmons,
and R. W. Poston
Publication: Symposium Paper
Appears on pages(s): 931-948
Keywords: cement-based repair materials; coeffecient of thermal expansion; cracking (fracturing); drying shrinkage; modulus of elasticity; repairs
Abstract:The concrete engineering of 2000 is facing two major challenges: (1) how to design and construct new concrete structures that have a designed long-lasting service life with minimum maintenance and repair, and (2) how to maintain the desired service life of distressed/deteriorated existing concrete structures; how to rehabilitate, repair and protect them for long-lasting service life. The durability of a repaired concrete structure and, thus, its service life depends on the quality of the composite system formed by the repair material and the existing reinforced concrete substrate. Compared to other properties, the soundness of the repair phase, I.e., the freedom from cracking, has a major impact on the long-term durability of repair systems. This paper describes research project, "Performance Criteria for Cement-based Repair Materials," initiated by the U.S. Army Corps of Engineers and performed by Structural Preservation Systems, Inc. In Phase I of the study, preliminary performance criteria for dimensionally compatible repair materials were identified based on a review of the literature. Laboratory and field exposure test to evaluate the preliminary performance criteria were conducted in Phase !! Of the project. Results of these tests were correlated to provide a basis for development of performance criteria for the selection of dimensionally compatible cement-based repair materials.
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