Ultra-High Performance Concrete for Bridge Deck Overlays

2018PDFTech Reporthttps://www.fhwa.dot.gov/publications/research/infrastructure/bridge/17097/index.cfmFHWA-HRT-17-097DTFH61-13-D-00007DTFH61-16-D-00033Overlays (Pavements)DeteriorationHighway bridgesUltra high performance concreteUnited StatesUnited States. Federal Highway Administration. Office of Research, Development, and TechnologyUnited States. Federal Highway Administration. Office of Research, Development, and TechnologyTurner-Fairbank Highway Research CenterGraybeal, BenjaminHaber, Zachary B.Munoz, Jose F.De la Varga, IgorFederal Highway AdministrationThis TechNote introduces ultra-high performance concrete (UHPC) as a potential solution for bridge deck overlays. A brief review of the history and development of UHPC is presented, followed by a summary of the properties that make UHPC a viable overlay solution. A laboratory investigation on the tensile bond strength of a UHPC specially formulated for overlay applications is then presented. This investigation provides a comparison between UHPC and latex-modified concrete (LMC) overlays using different substrate materials and surface preparations. Lastly, this TechNote highlights the findings of a field study and subsequent laboratory investigation aimed at evaluating the bond between a recently installed UHPC overlay and the existing reinforced concrete bridge deck. The full details and findings of this field study are available in a report by Haber et al. (2017).80