PTI Podcast

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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.

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Additional Resources: Not Applicable

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.

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Additional Resources:

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.

Listen Now: YouTube | Spotify | Apple

Additional Resources:

M55.1-19: Specification for Grouting of PT Structures
PTI Multistrand and Grouted PT Certification
ASBI Grouting Certification
Kilduff, A.L., Moyer, K.L., McCool, G.E., Ahern, M.E., and Breen, J.E. “Corrosion Resistance Recommendations from Long-Term Exposure Testing of Post-Tensioning Systems (0-4562-5F).” Center for Transportation Research, The University of Texas at Austin, 2013, https://library.ctr.utexas.edu/ctr-publications/0-4562-5f.pdf. 88 pp.
Schokker, A.J., West, J.S., Breen, J.E., and Kreger, M.E. "Research Report 1405-5: Interim Conclusions, Recommendations, and Design Guidelines for Durability of Post-Tensioned Bridge Substructures." Center for Transportation Research, Bureau of Engineering Research, The University of Texas at Austin, 1999, https://library.ctr.utexas.edu/ctr-publications/1405-5.pdf. 48 pp.

About Our Podcast

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.

PTI has an active presence on social media and regularly updates its followers on everything new at PTI via the following platforms:

About PTI

PTI is recognized as the world-wide authority on post-tensioning and is dedicated to expanding post-tensioning applications through marketing, education, research, teamwork, and code development.