James M. Parry, Wisconsin Department of Transportation The first development by the Wisconsin Department of Transportation (WisDOT) toward what could be considered high performance concrete (HPC) for bridge decks came in the mid to late 1990s with the development of
HSC for Route 22 Bridge over the Kentucky River
Steve Schweitzer, Prestress Services Industries, LLC. Route 22 Bridge over the Kentucky River near Gratz, KY, has the longest span for a post-tensioned, spliced, precast, prestressed concrete girder bridge in the United States. That honor was achieved by spanning 325
Benefits of Metakaolin in HPC
Metakaolin is produced by heat-treating kaolin, a natural, finely divided, aluminosiliceous mineral, which is found in abundance in North America in Georgia, South Carolina, and Saskatchewan. Heating to 1200 to 1650°F (650-900°C) alters its structure, producing a highly reactive supplementary
Curing, Shrinkage, and Cracking of Ternary Concrete Mixes
Tommy E. Nantung, Indiana Department of Transportation Many state transportation agencies are exploring ways to increase the service life of concrete bridge decks. In many cases, bridge deck replacement is needed while the pavement leading to the bridge is still
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