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Title: Performance criteria for concrete repair materials. Phase II, Summary report
Authors: Structural Preservation Systems, Inc.
Whitlock, Dalrymple, Poston & Associates.
Repair, Evaluation, Maintenance, and Rehabilitation Research Program (U.S.)
Vaysburd, Alexander M.
Emmons, Peter H.
McDonald, J. E. (James E.)
Kesner, Keith Evan 1970-
Keywords: Concrete
Concrete repair
Concrete properties
Concrete structures
Coefficient of thermal expansion
Compressive creep
Drying shrinkage
Material properties
Modulus of elasticity
Performance criteria
Tensile strength
Tensile creep
Publisher: Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Technical Report
Abstract: The results of a study to develop performance criteria for cement-based repair materials are summarized herein. Results of laboratory tests and field performance studies were correlated and guidance for selection of repair materials that would reduce the risk of premature failures was developed. This guidance includes a standard protocol for repair material data sheets and proposed performance criteria. Results of this study illustrate the significant effect of drying shrinkage on the performance of restrained repair materials. While there was a general correlation between the results of laboratory tests on unrestrained shrinkage specimens and field performance, there is a need for restrained shrinkage tests to evaluate the cracking resistance of repair materials. Although there was a general lack of significant correlation between individual material properties and field performance, results of this study indicate that it is possible to predict the field performance of repair materials based on a combination of material properties determined in laboratory tests. Results of this study emphasize the need for a comprehensive analytical model to predict the cracking resistance of repair materials that considers the interrelationship of pertinent material properties, the relative importance of individual properties, and the effect of environmental conditions on time-dependent material properties.
Appears in Collections:Technical Report

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