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MAY PROFESSIONAL MEETING

TOPIC: Minimizing Cracking in Concrete Bridge Decks

PRESENTER: Professor David Darwin, Ph.D., P.E., F.SEI, F.AAAS, Hon.M.ACI, Dist.M.ASCE, University of Kansas

DATE: Thursday, May 25th, 2023, 12:00 PM - 1:00 PM CST

LOCATION: Virtual (Zoom)

ABSTRACT: Bridge decks do best with minimal cracking. This means using a low paste content (< 27% by volume), good consolidation, minimal finishing, and early and thorough curing. Many contractors don’t know how to do this. Concrete overlays should not be used in new construction. Finally, even with good materials and construction, you need corrosion resistant reinforcement if the deck is subjected to deicing chemicals.

DAVID DARWIN, Ph.D., P.E., F.SEI, F.AAAS, Hon.M.ACI, Dist.M.ASCE

Dr. David Darwin is the Deane E. Ackers Distinguished Professor and Chair of the Civil, Environmental, and Architectural Engineering Department at the University of Kansas, Lawrence, KS. His experience includes service in the U.S. Army Corps of Engineers, including one year in Vietnam. Dr. Darwin is a Past President and Honorary Member of the American Concrete Institute and a Distinguished Member ASCE. His areas of interest include structural building codes, highway infrastructure, and the durability of structures with special emphasis on crack reduction, corrosion control, and bond and anchorage of reinforcing steel in concrete.

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