Strength in Concrete

Post-Tensioning Institute (PTI)

Strength in Concrete is a podcast hosted by the Post-Tensioning Institute (PTI) – the leading authority on post-tensioning and its applications. PTI brings you expert insights, in-depth discussions on emerging trends, and the latest advancements shaping the industry. For further insights and resources, visit us at www.post-tensioning.org.

Episodes

  1. Episode 5: PTI/ASBI Collaboration on PT Concrete Bridges

    08/06/2025

    Episode 5: PTI/ASBI Collaboration on PT Concrete Bridges

    Join Tim Christle, Executive Vice President of the Post-Tensioning Institute, as he sits down with Gregg Freeby, Executive Director of the American Segmental Bridge Institute (ASBI), for an engaging discussion on post-tensioned concrete bridges. This episode explores the significant advantages of post-tensioned concrete bridges, the expanding mission of ASBI, and the essential role post-tensioning plays in modern bridge design and construction. Drawing from his extensive experience—from his time with the Texas Department of Transportation to his leadership at ASBI—Gregg offers valuable insights on durability, technological advancements, and the collaborative efforts driving the concrete bridge industry forward. For more information and resources, visit us at www.post-tensioning.org.

    27 min
  2. Episode 4: An Engineer’s Perspective on PT Bridges

    07/10/2025

    Episode 4: An Engineer’s Perspective on PT Bridges

    Join Tim Christle, Executive Vice President of the Post-Tensioning Institute, as he welcomes Nick Amico, South Atlantic Major Bridge Lead at HDR, Inc., for an insightful discussion on the world of post-tensioned concrete bridges. In this episode, they delve into Nick's extensive experience in bridge design, focusing on the aesthetic and structural advantages of post-tensioned concrete bridges. The discussion covers key topics including the advantages of post-tensioning, the remarkable durability and flexibility of concrete, and case studies of notable projects such as the Marc Basnight Bridge. Additionally, the conversation touches on the evolution of post-tensioning technologies, with Nick offering valuable advice for aspiring engineers entering the field. This episode is a must-listen for both industry professionals and future bridge designers. For more information and resources, visit us at www.post-tensioning.org.

    28 min
  3. Episode 3: PT Bridge Tendon Grouting Quality and Durability

    04/25/2025

    Episode 3: PT Bridge Tendon Grouting Quality and Durability

    Join Tim Christle, Executive Vice President of the Post-Tensioning Institute, as he welcomes Brian Merrill, Principal at Wiss, Janney, Elstner Associates, Inc., for an in-depth discussion on post-tensioned concrete bridges. Together, they explore key topics such as corrosion protection, grout materials, and grouting procedures. Drawing from Brian's extensive industry expertise—including his work with the Texas Department of Transportation and the PTI M-55 Grouting Committee—the conversation offers valuable insights into the field. They also examine the evolution of specifications, advancements in technology, and the critical role of workmanship in ensuring the durability and resilience of post-tensioned bridges. This episode is a must-listen for industry professionals seeking expert knowledge and practical takeaways, as it highlights key advancements and advantages in the quality and durability found in post-tensioned concrete bridges. For more information and resources, visit us at www.post-tensioning.org.

    29 min
  4. Episode 2: PT Bridge Specifications and Certification

    03/27/2025

    Episode 2: PT Bridge Specifications and Certification

    In this episode, Tim Christle, Executive Vice President of the Post-Tensioning Institute, interviews Greg Hunsicker, Deputy Director at the Concrete Bridge Engineering Institute at the University of Texas in Austin. They discuss current post-tensioned concrete bridge specifications, the importance of state DOT adoption and AASHTO referencing, and the critical role of certification programs in ensuring quality and durability. Greg also highlights the new initiatives at the Concrete Bridge Engineering Institute and the value of hands-on training. Join us for an insightful conversation about the future of concrete bridges. For more information and resources, visit us at www.post-tensioning.org.

    19 min
  5. Episode 1: Modern Post-Tensioned Concrete Bridges

    02/18/2025

    Episode 1: Modern Post-Tensioned Concrete Bridges

    Join Tim Christle, Executive Vice President of the Post-Tensioning Institute, as he hosts Bob Sward, Vice President of Structural Technologies, LLC, in this episode of Strength in Concrete. Together, they take an in-depth look at the evolution of post-tensioned concrete bridges over the past 60+ years. Discover the key benefits and applications of post-tensioned bridges, advancements in design and technology, and how modern methods have significantly enhanced durability, resilience, and sustainability. Bob and Tim also address common myths about the industry and provide insights into emerging technologies shaping the future of post-tensioning. For more information and resources, visit us at www.post-tensioning.org.

    23 min
  • 5 Episodes

About

Strength in Concrete is a podcast hosted by the Post-Tensioning Institute (PTI) – the leading authority on post-tensioning and its applications. PTI brings you expert insights, in-depth discussions on emerging trends, and the latest advancements shaping the industry. For further insights and resources, visit us at www.post-tensioning.org.

Information

  • Creator
    Post-Tensioning Institute (PTI)
  • Years Active
    2024 - 2025
  • Episodes
    5
  • Show Website
    Strength in Concrete