Concrete Products

OCT 2018

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

Issue link:

Contents of this Issue


Page 10 of 60

8 • October 2018 GOVERNMENT AFFAIRS AGENCIES From "Building Bridges Better – Ultra-high performance concrete cre- ates strong, long-lasting connections," Federal Highway Administration Center for Accelerating Innovations' Innovator, Issue 67 … The use of ultra-high performance concrete (UHPC) to make better field-cast connections between prefabricated bridge elements (PBEs) is advanc- ing across the United States. Transportation agencies have used the steel fiber-reinforced, portland cement-based composite material on 100-plus projects since the nation's first bridge incorporating UHPC was completed in Iowa in 2006. Half of those structures were built after the Federal Highway Administration began encouraging deploy- ment of UHPC connections for PBEs through Every Day Counts (EDC) in 2015. "We're promoting UHPC to help make prefabricated bridge ele- ment connections simpler, stronger, and more durable," says FHWA Resource Center Structural Engineer Mark Leonard, co-leader of the EDC-4 (round four) UHPC team. As a result, 14 states and the U.S. Virgin Islands have expressed interest in using UHPC connections and are learning more about the material. Nineteen states, Federal Lands Highway, and Washington, D.C., are demonstrating and assessing the use of UHPC connections in bridge-building processes. Georgia, New Jersey, Pennsylvania, and Rhode Island have made UHPC connections a standard practice on bridge projects with PBEs. WHY UHPC CONNECTIONS? UHPC exhibits performance far exceeding that of conventional con- crete. "The way I like to explain UHPC is that it is a combination of lots of advancements that have occurred in the field of concrete," says FHWA Office of Infrastructure Research and Development Bridge Engineering Research Team Leader Ben Graybeal, EDC-4 UHPC team co-leader. "We know that using it for connections between prefabri- cated elements works very well." PBEs—structural components built offsite and moved to the project location for installation—shorten onsite construction time, enhance safety, and offer superior durability. Field-cast UHPC creates connections between PBEs that use less concrete for the connections and provide better long-term performance than typical connection designs. UHPC's mechanical properties allow for redesign of common FHWA measures ultra-high performance concrete traction FULLY AUTOMATED & CAPABLE OF 24/7 OPERATION CALL FOR YOUR QUOTE TODAY 866 958 7267 PATENTED DIF-JET ™ AERATORS PATENTED SAFER & CHEAPER THAN ACID ONLY $6.00 OF CO2 PER 10,000 GALLONS TREATED ONLY $6.00 OF ONLY $6.00 OF ONLY $6.00 OF ONLY $6.00 OF

Articles in this issue

Links on this page

Archives of this issue

view archives of Concrete Products - OCT 2018