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The Structural Engineering Podcast

Episode 87 - How strong is your understanding of UHPC?

May 7, 2024
Delve into the world of Ultra High Performance Concrete (UHPC) and its unique properties, cost implications, and diverse applications including transportation structures and architectural precast. Explore the impact of various fibers on UHPC finishability and the sustainability benefits compared to traditional concrete. Learn about enhancing fire resistance with steel and non-metallic fibers in UHPC for improved protection.
38:32

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Quick takeaways

  • UHPC boasts exceptional compressive and flexural strength along with superior freeze-thaw resistance, showcasing a new frontier in concrete technology.
  • Transitioning from bridge design to diverse projects, Colin Moriarty exemplifies the interconnectedness of diverse engineering disciplines and the dynamic perspectives within the industry.

Deep dives

Understanding Ultra-High-Performance Concrete (UHPC)

UHPC, or ultra-high-performance concrete, stands out for its exceptional qualities, boasting compressive strength of around 22,000 psi and a flexural strength of 3,000 psi, along with superior resistance to freeze-thaw cycles. Its composition involves a meticulous mix of materials such as cement, Sand and Scale, SCMs, and steel fiber strands, ensuring remarkable ductility. UHPC's fine particle packing, absence of coarse aggregates, and emphasis on fines contribute to its exceptional performance and durability, showcasing a new frontier in concrete technology.

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