United States Department of Transportation
i
Evaluation of Commercially Available Concrete Bridge Deck Repair Materials
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2021-07-01
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[PDF-6.54 MB]
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Edition:Final Report April 2018 to July 2021
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Abstract:Extensive investigation on rapid repair materials for concrete bridge decks is of utmost importance to limit the impact on traveling vehicles as well as selecting suitable materials with acceptable mechanical properties and durability requirements. The objective of this research project is to evaluate eight commercial cementitious rapid repair materials for application to a concrete bridge deck in Utah. A robust laboratory study to quantify the mechanical performance and durability has been conducted and accompanied with evaluation of field performance. More than 450 specimens were prepared according to manufacturer recommendations and tested at ages of 4 hours, 24 hours, 7 days, and 28 days to measure their setting time, compressive and splitting tensile strength, elastic modulus, autogenous and drying shrinkage, restrained ring shrinkage, surface resistivity, and slant shear bond strength. Repair patches on the Layton, Utah, SR-193 bridge over US-89 (Structure Number 0F 575) have been inspected three times over an eight-month period by researchers, and crack development on these patches has been recorded. Based on this work, this report intends to assist the Utah Department of Transportation (UDOT) to identify the most influential factors in the success or failure of deck repair materials as well as which tests are most helpful in the process of evaluation and selection of deck repair materials.
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