Say hello to superior strength and durability with ultra-high performance concrete (UHPC). A new TechNote released by the Federal Highway Administration (FHWA), Ultra-High Performance Concrete (Pub. No. FHWA-HRT-11-038), provides transportation agencies with an introduction to UHPC and discusses its applications and capabilities. “The mechanical and durability properties of UHPC make it an ideal candidate for developing new solutions to pressing concerns about highway infrastructure deterioration, repair, and replacement,” said Ben Graybeal of FHWA.
UHPC is an advanced cementitious composite material first developed in the 1990s and commercially available in the United States since 2000. Compared to more conventional concrete materials, UHPC exhibits superior properties such as exceptional durability, high compressive strength, usable tensile strength, and long-term stability. It generally contains high cementitious material contents, low water-to-cementitious material ratios, compressive strengths above 21.7 ksi (150 Mpa), and sustained tensile strength resulting from internal fiber reinforcement. These properties can be used to enhance bridge durability and develop new structural forms that will facilitate accelerated bridge construction.