Target Completion Date: August 26, 2011 Structures
Ultra high-performance, fiber-reinforced concrete (UHPFRC) has high compressive strengths in excess of 30,000 psi and flexural strengths above 7,000 psi. UHPFRC is virtually impermeable to water and solutions. The fibers in UHPFRC provide tensile capacity across cracks resulting in high shear capacity in bending members. Typically additional reinforcement for shear is not required. The four-spans of the bridge on Rte 33 over the Pamunkey River will contain beams with UHPFRC. The high strengths are needed in these spans to enable shallow beams due to clearance limitations. Beams will not contain conventional stirrups, normally used as shear reinforcement, since the steel fibers will provide adequate shear resistance. Structural testing including load test and strain measurements is planned.
Last updated: July 5, 2023
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