Modular UHPC waffle deck slabs for highway bridges

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This project deals with the development of a system for constructing deck slabs for highway bridges that arelighter, faster to construct, more durable, and more economical than conventional deck slabs built ofcast-in-place concrete. Using the proposed system, deck slabs are assembled from modular prefabricated panelsconstructed from ultra high-performance concrete (UHPC). This is a new material that improves onconventional concrete by offering higher compressive strength, a reliable tensile strength, and extremely lowpermeability. This enables the deck slab panels to be composed of a relatively thin slab with monolithic ribs intwo orthogonal directions, thus making the panels significantly lighter than conventional solid deck slabs.The work to be accomplished in this project is to determine the most optimum dimensions for the concretepanels and arrangement of reinforcement. This will be accomplished by analytical and experimental means,including full-scale load tests.