UHPC Technical Experience & Projects
UHPC Connections for Precast Bridge Systems
• Assisted Turner-Fairbank Highway Research Center in developing testing procedures for durable, leak-resistant UHPC connections for precast bridge deck systems (2008).
• Collaborated with industry and trade associations to procure precast deck specimens with UHPC joints for laboratory testing (2008).
• Led design and construction efforts for the first use of UHPC field-cast connections in U.S. bridges, including prestressed concrete deck bulb-tee superstructures and precast deck panels on steel superstructures (2009).
• Developed UHPC field-cast connection details achieving approximately 14 ksi compressive strength within 12–14 hours (2012).
• Developed and implemented heat-curing procedures and strength verification using the maturity method for field-placed UHPC (2012).
UHPC Link Slabs and Joint Elimination
• Developed and implemented UHPC link slabs as part of precast deck replacement projects (2012).
• Developed UHPC link slabs to replace existing deck joint systems while retaining the original bridge deck (2016).
• Developed structural strategies for multi-span bridges linked with UHPC link slabs, including evaluation of thermal, traction, wind, and seismic effects (2017).
UHPC Composite Action and Girder Interfaces
• Collaborated with FHWA and industry partners on development and testing of composite UHPC connections between precast decks and steel or concrete girders.
• Developed and implemented hidden UHPC haunch connections between girder top flanges and precast concrete panels based on laboratory testing (2014).
UHPC Applications for Rehabilitation and Strengthening
• Implemented UHPC connections between existing bridge columns and new precast concrete cap beams (2013).
• Developed and implemented UHPC headers for bridge deck joint systems (2016).
• Developed and implemented UHPC overlays for bridge deck rehabilitation.
• Developed a method for strengthening existing steel through-girders by adding UHPC to the top flange and assisted Turner-Fairbank Highway Research Center in developing testing procedures.
National Coordination, Workshops, and Technical Leadership
• Panel member at the 1st International Interactive Symposium on UHPC, participating in technical sessions on UHPC connections and link slabs.
• Organizer of a FHWA-sponsored UHPC workshop covering connections, overlays, link slabs, and steel beam end repairs (2017).
• Member of the organizing committee for the 2nd International Interactive Symposium on UHPC.
• Delivered FHWA-sponsored webinars and technical sessions on UHPC from 2009 to 2019.
• Served as the primary technical point of contact for UHPC-related inquiries within NYSDOT and FHWA’s Every Day Counts initiative.
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